----- Original Message ----- > [cc'ing net-dev mailing list] > > Thanks for reporting this issue. > > This looks like 7089443 [1], fixed in jdk8 via 7112670 [2]. Looks > like > icetea needs to sync up, or maybe they are based against the jdk7 > repo.
The report is from OpenJDK6: /usr/lib/jvm/java-6-openjdk-amd64/ There is IcedTea support for 6, 7 and 8, but we only ship the complete releases (6 & 7) at present. Shipping an early release / early releases of 8 may be on the agenda at some point, but it means also covering it for security issues. > If so, this could be a good candidate to backport from jdk8 to jdk7 ( > then I think icetea will get it for free! ). > I'll look into this. > -Chris. > > [1] http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=7089443 > [2] http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=7112670 > > -Chris. > > On 31/07/12 06:07, Robert Święcki wrote: > > Hi, > > > > When using Java code compiled with gllibc's fortify source (buffer > > overflow detection among others). It crashes: > > > > $ java -jar jar.jar > > *** buffer overflow detected ***: java terminated > > ======= Backtrace: ========= > > /lib/x86_64-linux-gnu/libc.so.6(__fortify_fail+0x37)[0x7fc56100a007] > > /lib/x86_64-linux-gnu/libc.so.6(+0x107f00)[0x7fc561008f00] > > /usr/lib/jvm/java-6-openjdk-amd64/jre/lib/amd64/libnet.so(Java_java_net_Inet4AddressImpl_getLocalHostName+0x1a0)[0x7fc55d8e4530] > > [0x7fc555010d28] > > ======= Memory map: ======== > > 00400000-00409000 r-xp 00000000 fd:01 2872 > > /usr/lib/jvm/java-6-openjdk-amd64/jre/bin/java > > 00608000-00609000 r--p 00008000 fd:01 2872 > > /usr/lib/jvm/java-6-openjdk-amd64/jre/bin/java > > 00609000-0060a000 rw-p 00009000 fd:01 2872 > > /usr/lib/jvm/java-6-openjdk-amd64/jre/bin/java > > 01dba000-01ddb000 rw-p 00000000 00:00 0 > > [heap] > > cc000000-cca70000 rw-p 00000000 00:00 0 > > cca70000-d9e00000 rw-p 00000000 00:00 0 > > d9e00000-db2f0000 rw-p 00000000 00:00 0 > > db2f0000-f5a00000 rw-p 00000000 00:00 0 > > f5a00000-f6ec0000 rw-p 00000000 00:00 0 > > f6ec0000-100000000 rw-p 00000000 00:00 0 > > 7fc538000000-7fc538021000 rw-p 00000000 00:00 0 > > 7fc538021000-7fc53c000000 ---p 00000000 00:00 0 > > 7fc53c000000-7fc53c021000 rw-p 00000000 00:00 0 > > 7fc53c021000-7fc540000000 ---p 00000000 00:00 0 > > 7fc540000000-7fc540021000 rw-p 00000000 00:00 0 > > 7fc540021000-7fc544000000 ---p 00000000 00:00 0 > > 7fc544000000-7fc5440f5000 rw-p 00000000 00:00 0 > > 7fc5440f5000-7fc548000000 ---p 00000000 00:00 0 > > 7fc548000000-7fc548021000 rw-p 00000000 00:00 0 > > 7fc548021000-7fc54c000000 ---p 00000000 00:00 0 > > > > IMO, the problem is here > > > > http://icedtea.classpath.org/~vanaltj/webrevs/tl/patch1/jdk/src/solaris/native/java/net/Inet4AddressImpl.c.html > > (line 112) > > > > I.e. MAXHOSTNAMELEN is declarative only (a convention), and it is > > assumed there that gethostbyaddr-like functions will return strings > > which are shorter-equal than 64 (typical value of MAXHOSTNAMELEN). > > > > The machine's FQDN was way over 64 characters, so it crashed. I > > don't > > think it's easily exploitable (requires control over DNS), but it'd > > be > > probably good to fix it. > > > -- Andrew :) Free Java Software Engineer Red Hat, Inc. (http://www.redhat.com) PGP Key: 248BDC07 (https://keys.indymedia.org/) Fingerprint = EC5A 1F5E C0AD 1D15 8F1F 8F91 3B96 A578 248B DC07
