Re: mounting /tmp noexec

2002-01-03 Thread Tollef Fog Heen
08:47:17 ~$ ls -l /tmp/a | > -rwxr-xr-x1 alexey alexey 0 ñÎ× 3 08:47 /tmp/a | > [terrapin] 08:47:21 ~$ /tmp/a | > bash: /tmp/a: Permission denied | > [terrapin] 08:47:25 ~$ | | what happens if you do: | | sh -x /tmp/a It works just fine. That is part of why noexec is point

Re: mounting /tmp noexec

2002-01-03 Thread Tollef Fog Heen
08:47:17 ~$ ls -l /tmp/a | > -rwxr-xr-x1 alexey alexey 0 ñÎ× 3 08:47 /tmp/a | > [terrapin] 08:47:21 ~$ /tmp/a | > bash: /tmp/a: Permission denied | > [terrapin] 08:47:25 ~$ | | what happens if you do: | | sh -x /tmp/a It works just fine. That is part of why noexec is point

Re: Secure 2.4.x kernel - readonly

2001-12-27 Thread Tollef Fog Heen
so, if you have users, then /home. | | /etc is written into by the kernel ( for mounts/unmounts ) ln -s /proc/mounts /etc/mtab | /proc if you use it is writable /proc is a kernel interface. It is not a real file system. -- Tollef Fog Heen Unix _IS_ user friendly... It's just selective about who its friends are.

Re: Secure 2.4.x kernel - readonly

2001-12-27 Thread Tollef Fog Heen
so, if you have users, then /home. | | /etc is written into by the kernel ( for mounts/unmounts ) ln -s /proc/mounts /etc/mtab | /proc if you use it is writable /proc is a kernel interface. It is not a real file system. -- Tollef Fog Heen Unix _IS_ user friendly... It's just selective

Re: central administration techniques

2001-12-17 Thread Tollef Fog Heen
r SSL (or you can use cfd without SSL). -- Tollef Fog Heen Unix _IS_ user friendly... It's just selective about who its friends are.

Re: central administration techniques

2001-12-17 Thread Tollef Fog Heen
r SSL (or you can use cfd without SSL). -- Tollef Fog Heen Unix _IS_ user friendly... It's just selective about who its friends are. -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]

Re: Exploit - what to do

2001-07-18 Thread Tollef Fog Heen
alert pages I see | nothing about passwd. | What should I do? Send it to [EMAIL PROTECTED] That is a closed list which won't make it public preliminary. -- Tollef Fog Heen You Can't Win

Re: Exploit - what to do

2001-07-18 Thread Tollef Fog Heen
alert pages I see | nothing about passwd. | What should I do? Send it to [EMAIL PROTECTED] That is a closed list which won't make it public preliminary. -- Tollef Fog Heen You Can't Win -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]

Re: Unable to gain access to secure sites.

2001-05-16 Thread Tollef Fog Heen
up Mozilla into separate packages, and the crypto | code (ie, PSM) is in its own (optional) package. So I'm not even sure what | the issue is anymore... The Debian maintainer is the same as the Ximian one. He is working on splitting the deb into multiple parts, but this takes time. -- Tollef Fog

Re: Unable to gain access to secure sites.

2001-05-16 Thread Tollef Fog Heen
up Mozilla into separate packages, and the crypto | code (ie, PSM) is in its own (optional) package. So I'm not even sure what | the issue is anymore... The Debian maintainer is the same as the Ximian one. He is working on splitting the deb into multiple parts, but this takes time. -- Tolle

Re: SSH-1.5-OpenSSH-1.2.3 of debian 2.2 is secure?

2001-05-05 Thread Tollef Fog Heen
ts the password (but not the data). -- Tollef Fog Heen Unix _IS_ user friendly... It's just selective about who its friends are.

Re: SSH-1.5-OpenSSH-1.2.3 of debian 2.2 is secure?

2001-05-05 Thread Tollef Fog Heen
ts the password (but not the data). -- Tollef Fog Heen Unix _IS_ user friendly... It's just selective about who its friends are. -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]

Re: Please remove me from this mailing list

2001-03-22 Thread Tollef Fog Heen
You should be able to unsubscribe at http://www.debian.org/MailingLists/unsubscribe , have you tried that? -- Tollef Fog Heen Unix _IS_ user friendly... It's just selective about who its friends are.

Re: Please remove me from this mailing list

2001-03-22 Thread Tollef Fog Heen
:-) You should be able to unsubscribe at http://www.debian.org/MailingLists/unsubscribe , have you tried that? -- Tollef Fog Heen Unix _IS_ user friendly... It's just selective about who its friends are. -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubsc

Re: News server ?

2001-03-15 Thread Tollef Fog Heen
ailman supports this natively. -- Tollef Fog Heen Unix _IS_ user friendly... It's just selective about who its friends are.

Re: News server ?

2001-03-15 Thread Tollef Fog Heen
ailman supports this natively. -- Tollef Fog Heen Unix _IS_ user friendly... It's just selective about who its friends are. -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]

Re: Network security

2001-03-08 Thread Tollef Fog Heen
* | But a good one, it works!! | Thanks!! Nice to hear. :) | Now, I wonder why this problem occours. I'll have to take a look at some RFC | to figure out.. anyone who can point me in the right direction?? RFC 2481, iirc. -- Tollef Fog Heen Unix _IS_ user friendly... It's just

Re: Network security

2001-03-08 Thread Tollef Fog Heen
mpiled the kernel? If so, many firewalls and routers drop packages with this set. It bit me, and I couldn't find out what it was - look at whether /proc/sys/net/ipv4/tcp_ecn contains a 0 (which works here), or a 1 (which causes some problems). -- Tollef Fog Heen Unix _IS_ user friendly...

Re: Network security

2001-03-08 Thread Tollef Fog Heen
* | But a good one, it works!! | Thanks!! Nice to hear. :) | Now, I wonder why this problem occours. I'll have to take a look at some RFC | to figure out.. anyone who can point me in the right direction?? RFC 2481, iirc. -- Tollef Fog Heen Unix _IS_ user friendly... It's just

Re: Network security

2001-03-08 Thread Tollef Fog Heen
mpiled the kernel? If so, many firewalls and routers drop packages with this set. It bit me, and I couldn't find out what it was - look at whether /proc/sys/net/ipv4/tcp_ecn contains a 0 (which works here), or a 1 (which causes some problems). -- Tollef Fog Heen Unix _IS_ user friendly...

Re: SSH with potato, not very secure?

2001-03-03 Thread Tollef Fog Heen
* Jacob Meuser | On Fri, Mar 02, 2001 at 11:39:15AM +0100, Tollef Fog Heen wrote: | > * Ethan Benson | > | > Not everyone has a permanent internet connection.. It should probably | > ask whether you want to have it in there. | > | | I believe it becomes uncommented if one in

Re: SSH with potato, not very secure?

2001-03-03 Thread Tollef Fog Heen
* Jacob Meuser | On Fri, Mar 02, 2001 at 11:39:15AM +0100, Tollef Fog Heen wrote: | > * Ethan Benson | > | > Not everyone has a permanent internet connection.. It should probably | > ask whether you want to have it in there. | > | | I believe it becomes uncommented if one in

Re: SSH with potato, not very secure?

2001-03-02 Thread Tollef Fog Heen
here in r0 too, | | it was there but commented out by default? hrm i wonder why that is, | it does not much good being commented out... Not everyone has a permanent internet connection.. It should probably ask whether you want to have it in there. -- Tollef Fog Heen Unix _IS_ user friendly... It&#

Re: SSH with potato, not very secure?

2001-03-02 Thread Tollef Fog Heen
there in r0 too, | | it was there but commented out by default? hrm i wonder why that is, | it does not much good being commented out... Not everyone has a permanent internet connection.. It should probably ask whether you want to have it in there. -- Tollef Fog Heen Unix _IS_ user friendly... It&#

Re: insecure temporary file creation

2001-02-07 Thread Tollef Fog Heen
I don't like playing around in the kernel, but by using libc hooks and ld.so.preload, you can trace all this in userspace without risking too much. The downside is that it doesn't work with statically linked binaries. Also, adding the pam-tmpdir-module might be a start as well. --

Re: insecure temporary file creation

2001-02-07 Thread Tollef Fog Heen
hooks. I don't like playing around in the kernel, but by using libc hooks and ld.so.preload, you can trace all this in userspace without risking too much. The downside is that it doesn't work with statically linked binaries. Also, adding the pam-tmpdir-module might be a start as well. --

Re: ISPs offering ssl-encrypted e-mail?

2001-02-06 Thread Tollef Fog Heen
Another reason is probably that you don't see the need for that security, until somebody shows you how easy it is to read you mail, passwords etc. And somebody does it to _all_ users. -- Tollef Fog Heen Unix _IS_ user friendly... It's just selective about who its friends are.

Re: ISPs offering ssl-encrypted e-mail?

2001-02-06 Thread Tollef Fog Heen
desk. Another reason is probably that you don't see the need for that security, until somebody shows you how easy it is to read you mail, passwords etc. And somebody does it to _all_ users. -- Tollef Fog Heen Unix _IS_ user friendly... It's just selective about who its friends are. --

Re: What should a Debian-security metapackage should provide?

2000-12-13 Thread Tollef Fog Heen
* Javier Fernandez-Sanguino Peña | Any thoughts? There is a discussion on -devel about _limiting_ the number of task packages, not increasing it. So until that one is finished, adding four task- packages isn't a good idea, imho. -- Tollef Fog Heen Unix _IS_ user friendly... It&#

Re: OS Hardening

2000-12-13 Thread Tollef Fog Heen
those with priority: standard and higher. -- Tollef Fog Heen Unix _IS_ user friendly... It's just selective about who its friends are.

Re: What should a Debian-security metapackage should provide?

2000-12-13 Thread Tollef Fog Heen
* Javier Fernandez-Sanguino Peña | Any thoughts? There is a discussion on -devel about _limiting_ the number of task packages, not increasing it. So until that one is finished, adding four task- packages isn't a good idea, imho. -- Tollef Fog Heen Unix _IS_ user friendly... It&#

Re: OS Hardening

2000-12-13 Thread Tollef Fog Heen
those with priority: standard and higher. -- Tollef Fog Heen Unix _IS_ user friendly... It's just selective about who its friends are. -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]

Re: What should a Debian-security metapackage should provide?

2000-12-04 Thread Tollef Fog Heen
od idea, anyhow? -- Tollef Fog Heen Unix _IS_ user friendly... It's just selective about who its friends are.

Re: What should a Debian-security metapackage should provide?

2000-12-04 Thread Tollef Fog Heen
m - I would _never_ install X on a server. :) -- Tollef Fog Heen Unix _IS_ user friendly... It's just selective about who its friends are.

Re: What should a Debian-security metapackage should provide?

2000-12-04 Thread Tollef Fog Heen
od idea, anyhow? -- Tollef Fog Heen Unix _IS_ user friendly... It's just selective about who its friends are. -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]

Re: What should a Debian-security metapackage should provide?

2000-12-04 Thread Tollef Fog Heen
m - I would _never_ install X on a server. :) -- Tollef Fog Heen Unix _IS_ user friendly... It's just selective about who its friends are. -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]

Re: Problems with root on network clients

2000-11-25 Thread Tollef Fog Heen
directory, if you first successfully authenticate using Kerberos. -- Tollef Fog Heen Unix _IS_ user friendly... It's just selective about who its friends are.

Re: console-apt bug in Potato 2.2.r1

2000-11-25 Thread Tollef Fog Heen
* Jure Mercun | I Don't know, whether this can be exploited, but it's better to be | sre. It's not suid anything, so it can't be used for anything, but it's a bug, yes. (I haven't confirmed it). -- Tollef Fog Heen Unix _IS_ user friendly... It's just selective about who its friends are.

Re: Problems with root on network clients

2000-11-25 Thread Tollef Fog Heen
home directory, if you first successfully authenticate using Kerberos. -- Tollef Fog Heen Unix _IS_ user friendly... It's just selective about who its friends are. -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]

Re: console-apt bug in Potato 2.2.r1

2000-11-25 Thread Tollef Fog Heen
* Jure Mercun | I Don't know, whether this can be exploited, but it's better to be | sre. It's not suid anything, so it can't be used for anything, but it's a bug, yes. (I haven't confirmed it). -- Tollef Fog Heen Unix _IS_ user friendly... It's just

Re: [SECURITY] New version of ghostscript released

2000-11-24 Thread Tollef Fog Heen
f you use it, make it check it's return values! Right now, it changes the return value as well - so time(2) returns for tomorrow. compile with gcc -ldl -fpic -shared fake-time.c -o fake-time.so run with LD_PRELOAD=./fake-time.so date -- Tollef Fog Heen Unix _IS_ user friendly... It's just selective about who its friends are.

Re: [SECURITY] New version of ghostscript released

2000-11-24 Thread Tollef Fog Heen
And if you use it, make it check it's return values! Right now, it changes the return value as well - so time(2) returns for tomorrow. compile with gcc -ldl -fpic -shared fake-time.c -o fake-time.so run with LD_PRELOAD=./fake-time.so date -- Tollef Fog Heen Unix _IS_ user friendly...

Re: [SECURITY] New version of ghostscript released

2000-11-24 Thread Tollef Fog Heen
ACE_TRACEME, 0, 1, 0); execl("/bin/date", "/bin/date", NULL, (char *)0); } (from a post on bugtraq last year). -- Tollef Fog Heen Unix _IS_ user friendly... It's just selective about who its friends are.

Re: [SECURITY] New version of ghostscript released

2000-11-23 Thread Tollef Fog Heen
ACE_TRACEME, 0, 1, 0); execl("/bin/date", "/bin/date", NULL, (char *)0); } (from a post on bugtraq last year). -- Tollef Fog Heen Unix _IS_ user friendly... It's just selective about who its friends are. -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subj

Re: Problems with root on network clients

2000-11-23 Thread Tollef Fog Heen
name, but I saw it on freshmeat some time ago. -- Tollef Fog Heen Unix _IS_ user friendly... It's just selective about who its friends are.

Re: Problems with root on network clients

2000-11-23 Thread Tollef Fog Heen
name, but I saw it on freshmeat some time ago. -- Tollef Fog Heen Unix _IS_ user friendly... It's just selective about who its friends are. -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]

Re: Configuring ssh

2000-11-06 Thread Tollef Fog Heen
Fog Heen Unix _IS_ user friendly... It's just selective about who its friends are.

Re: Configuring ssh

2000-11-06 Thread Tollef Fog Heen
Fog Heen Unix _IS_ user friendly... It's just selective about who its friends are. -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]

Re: OTP (opie) and ssh

2000-09-19 Thread Tollef Fog Heen
And, if you for some reason are on a public terminal, do _you_ trust the client? I wouldn't. -- Tollef Fog Heen Unix _IS_ user friendly... It's just selective about who its friends are.

Re: OTP (opie) and ssh

2000-09-19 Thread Tollef Fog Heen
And, if you for some reason are on a public terminal, do _you_ trust the client? I wouldn't. -- Tollef Fog Heen Unix _IS_ user friendly... It's just selective about who its friends are. -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe"

Re: possible security flaw in screen 3.9.5-9

2000-09-09 Thread Tollef Fog Heen
* Ethan Benson | > Still, why does /var/lib/texmf/* need to be publically writeable? | | design flaws in tetex. see the BTS for a long discussion about it. | its not trivial to fix unfortunatly. what is texconfig - font - fontro, then? -- Tollef Fog Heen Unix _IS_ user friendly... I

Re: possible security flaw in screen 3.9.5-9

2000-09-09 Thread Tollef Fog Heen
* Ethan Benson | > Still, why does /var/lib/texmf/* need to be publically writeable? | | design flaws in tetex. see the BTS for a long discussion about it. | its not trivial to fix unfortunatly. what is texconfig - font - fontro, then? -- Tollef Fog Heen Unix _IS_ user friendly... I

Re: Editing and storing encrypted files

2000-09-07 Thread Tollef Fog Heen
ry-all/editors/crypt++el_2.87-2.deb Size: 35832 Installed-Size: 143 MD5sum: 5d1a32288c1012f7de8ca8d02bf00522 Description: Emacs-Lisp Code for handling compressed and encrypted files Code for handling all sorts of compressed and encrypted files like: .gz, .tar.gz, .Z, .zip, PGP etc. -- Tollef Fo

Re: Editing and storing encrypted files

2000-09-07 Thread Tollef Fog Heen
ry-all/editors/crypt++el_2.87-2.deb Size: 35832 Installed-Size: 143 MD5sum: 5d1a32288c1012f7de8ca8d02bf00522 Description: Emacs-Lisp Code for handling compressed and encrypted files Code for handling all sorts of compressed and encrypted files like: .gz, .tar.gz, .Z, .zip, PGP etc. -- Tollef Fo

Re: sorry for the wide question but

2000-08-29 Thread Tollef Fog Heen
machine. If the rest of the box is that old, it's probably more or less riddled with holes. The _only_ thing to do after a root compromise is full reinstall from known good media. It's faster and easier. And you have to ability to switch to debian as well! :) -- Tollef Fog Heen Unix

Re: icmp: echo reply? Am I being attacked?

2000-08-14 Thread Tollef Fog Heen
* Nathan Valentine | I wish I could remember where I read this so that I could | provide a pointer. TCP/IP Illustrated V2. "Design and implementation of the 4.4 BSD operating system" has something about it, iirc. My book is about 500kms away, so I can't check. -- Tollef Fog H

Re: Kernel capability bug for kernels < 2.2.16

2000-06-16 Thread Tollef Fog Heen
current kernel be updated ASAP ? >From the latest debian-newsletter: * A fix for the capabilities-related local root compromise in kernel 2.2.15 was [21]backported into the Debian package of kernel 2.2.15. -- Tollef Fog Heen This is the unix version of the LoveBug virus and in th

Re: Kernel capability bug for kernels < 2.2.16

2000-06-16 Thread Tollef Fog Heen
and the current kernel be updated ASAP ? >From the latest debian-newsletter: * A fix for the capabilities-related local root compromise in kernel 2.2.15 was [21]backported into the Debian package of kernel 2.2.15. -- Tollef Fog Heen This is the unix version of the LoveBug virus and in th

Re: XF86 server denial of service

2000-05-25 Thread Tollef Fog Heen
* Rehak Tamas | I think, slink is affected to, at least mine contains that string... potato contains the string as well, so I guess it's vulnerable. -- Tollef Fog Heen This is the unix version of the LoveBug virus and in the spirit of such it depends on the user community to prop

Re: Checksums on ftp

2000-04-27 Thread Tollef Fog Heen
ors or certification authorities. http://www.fs.net> -- Tollef Fog Heen Unix _IS_ user friendly... It's just selective about who its friends are.

Re: Checksums on ftp

2000-04-27 Thread Tollef Fog Heen
* Alexander Hvostov | How do you do NFS over SSH? I'm interested. I don't, but since you can do NFS over TCP, i guessed that you can do NFS over SSH as well. Or, you can do samba over SSH. Or just SFS. -- Tollef Fog Heen Unix _IS_ user friendly... It's just selectiv

Re: Checksums on ftp

2000-04-27 Thread Tollef Fog Heen
-SSH should work ok. Still, one has to have one system which one trusts if you are to remote administer it. -- Tollef Fog Heen Unix _IS_ user friendly... It's just selective about who its friends are.

Re: GNOME security.

2000-03-24 Thread Tollef Fog Heen
* Peter Cordes | You mean Xnest? Yes, sorry, I didn't check and recalled the wrong name. -- Tollef Fog Heen Unix _IS_ user friendly... It's just selective about who its friends are.

Re: Automatic password changing

2000-03-23 Thread Tollef Fog Heen
t a semi-priviledged-user could sudo to root and then change root's password. You will of course have to guard that password very well, as it might give instant root.. :) I find this a better solution than autochanging passwords. -- Tollef Fog Heen Unix _IS_ user friendly... It's

Re: GNOME security.

2000-03-23 Thread Tollef Fog Heen
* Sergio Brandano | I am using gdm. Let see how I can do that. Anyway, will this affect | ssh? Yes, but you can run Xev (X-in-a-window) and ssh from there. This is safer as well if you are really paranoid, since then you trust the remote sshd less. -- Tollef Fog Heen Unix _IS_ user

Re: your mail

2000-03-17 Thread Tollef Fog Heen
* Tim Haynes | In any event letting on a valid username for "who owns this | socket/connection" increases security risks, albeit not necessarily | by much. Then one can provide the numeric userid instead. -- Tollef Fog Heen Unix _IS_ user friendly... It's just selectiv