DSA-1464-1 syslog-ng -- null pointer dereference

Debian Security Advisory

DSA-1464-1 syslog-ng -- null pointer dereference

Date Reported:

15 Jan 2008

Affected Packages:

syslog-ng

Vulnerable:

Yes

Security database references:

In Mitre's CVE dictionary: CVE-2007-6437.

More information:

Oriol Carreras discovered that syslog-ng, a next generation logging daemon can be tricked into dereferencing a NULL pointer through malformed timestamps, which can lead to denial of service and the disguise of an subsequent attack, which would otherwise be logged.

The old stable distribution (sarge) is not affected.

For the stable distribution (etch), this problem has been fixed in version 2.0.0-1etch4.

For the unstable distribution (sid), this problem has been fixed in version 2.0.6-1.

We recommend that you upgrade your syslog-ng package.

Fixed in:

Debian GNU/Linux 4.0 (stable)

Source:

http://security.debian.org/pool/updates/main/s/syslog-ng/syslog-ng_2.0.0-1etch4.dsc

http://security.debian.org/pool/updates/main/s/syslog-ng/syslog-ng_2.0.0.orig.tar.gz

http://security.debian.org/pool/updates/main/s/syslog-ng/syslog-ng_2.0.0-1etch4.diff.gz

Alpha:

http://security.debian.org/pool/updates/main/s/syslog-ng/syslog-ng_2.0.0-1etch4_alpha.deb

AMD64:

http://security.debian.org/pool/updates/main/s/syslog-ng/syslog-ng_2.0.0-1etch4_amd64.deb

ARM:

http://security.debian.org/pool/updates/main/s/syslog-ng/syslog-ng_2.0.0-1etch4_arm.deb

HP Precision:

http://security.debian.org/pool/updates/main/s/syslog-ng/syslog-ng_2.0.0-1etch4_hppa.deb

Intel IA-32:

http://security.debian.org/pool/updates/main/s/syslog-ng/syslog-ng_2.0.0-1etch4_i386.deb

Intel IA-64:

http://security.debian.org/pool/updates/main/s/syslog-ng/syslog-ng_2.0.0-1etch4_ia64.deb

Big-endian MIPS:

http://security.debian.org/pool/updates/main/s/syslog-ng/syslog-ng_2.0.0-1etch4_mips.deb

Little-endian MIPS:

http://security.debian.org/pool/updates/main/s/syslog-ng/syslog-ng_2.0.0-1etch4_mipsel.deb

PowerPC:

http://security.debian.org/pool/updates/main/s/syslog-ng/syslog-ng_2.0.0-1etch4_powerpc.deb

IBM S/390:

http://security.debian.org/pool/updates/main/s/syslog-ng/syslog-ng_2.0.0-1etch4_s390.deb

Sun Sparc:

http://security.debian.org/pool/updates/main/s/syslog-ng/syslog-ng_2.0.0-1etch4_sparc.deb

MD5 checksums of the listed files are available in the original advisory.