Re: [Pdns-users] Regarding CVE-2015-7547 & PowerDNS Recursor

2016-02-17 Thread Nick Douma
Hi, On 17-02-16 14:38, bert hubert wrote: > On Wed, Feb 17, 2016 at 02:12:51PM +0100, Nick Douma wrote: >> What about the static debian package on the website? I assume updating >> the OS libc package is not enough? > > Check with ldd /usr/sbin/pdns_server or /usr/sbin/pdns_recursor to see if > y

Re: [Pdns-users] Regarding CVE-2015-7547 & PowerDNS Recursor

2016-02-17 Thread bert hubert
On Wed, Feb 17, 2016 at 02:12:51PM +0100, Nick Douma wrote: > What about the static debian package on the website? I assume updating > the OS libc package is not enough? Hi Nick, Good question. It turns out our recent static packages in fact link to the system libc. We call these 'semi-static', b

Re: [Pdns-users] Regarding CVE-2015-7547 & PowerDNS Recursor

2016-02-17 Thread Nick Douma
Hi, On 17-02-16 13:56, bert hubert wrote: > In short, this is a vulnerability not in PowerDNS products but in the Linux > C library. This vulnerability could be exploited if it would be possible to > relay specifically crafted records to Linux clients. > > Please let us know if you have further qu

[Pdns-users] Regarding CVE-2015-7547 & PowerDNS Recursor

2016-02-17 Thread bert hubert
Since yesterday we have been following and studying CVE-2015-7547. More about which on https://googleonlinesecurity.blogspot.nl/2016/02/cve-2015-7547-glibc-getaddrinfo-stack.html In short, this is a vulnerability not in PowerDNS products but in the Linux C library. This vulnerability could be expl