Debian Security Advisory

DSA-1735-1 znc -- missing input sanitization

Date Reported:

10 Mar 2009

Affected Packages:

znc

Vulnerable:

Yes

Security database references:

In the Debian bugtracking system: Bug 516950.
In Mitre's CVE dictionary: CVE-2009-0759.

More information:

It was discovered that znc, an IRC proxy/bouncer, does not properly sanitize input contained in configuration change requests to the webadmin interface. This allows authenticated users to elevate their privileges and indirectly execute arbitrary commands (CVE-2009-0759).

For the old stable distribution (etch), this problem has been fixed in version 0.045-3+etch2.

For the stable distribution (lenny), this problem has been fixed in version 0.058-2+lenny1.

For the unstable distribution (sid), this problem has been fixed in version 0.066-1.

We recommend that you upgrade your znc packages.

Fixed in:

Debian GNU/Linux 4.0 (etch)

Source:: http://security.debian.org/pool/updates/main/z/znc/znc_0.045.orig.tar.gz; http://security.debian.org/pool/updates/main/z/znc/znc_0.045-3+etch2.dsc; http://security.debian.org/pool/updates/main/z/znc/znc_0.045-3+etch2.diff.gz
Alpha:: http://security.debian.org/pool/updates/main/z/znc/znc_0.045-3+etch2_alpha.deb
AMD64:: http://security.debian.org/pool/updates/main/z/znc/znc_0.045-3+etch2_amd64.deb
HP Precision:: http://security.debian.org/pool/updates/main/z/znc/znc_0.045-3+etch2_hppa.deb
Intel IA-32:: http://security.debian.org/pool/updates/main/z/znc/znc_0.045-3+etch2_i386.deb
Intel IA-64:: http://security.debian.org/pool/updates/main/z/znc/znc_0.045-3+etch2_ia64.deb
Big-endian MIPS:: http://security.debian.org/pool/updates/main/z/znc/znc_0.045-3+etch2_mips.deb
Little-endian MIPS:: http://security.debian.org/pool/updates/main/z/znc/znc_0.045-3+etch2_mipsel.deb
PowerPC:: http://security.debian.org/pool/updates/main/z/znc/znc_0.045-3+etch2_powerpc.deb
IBM S/390:: http://security.debian.org/pool/updates/main/z/znc/znc_0.045-3+etch2_s390.deb
Sun Sparc:: http://security.debian.org/pool/updates/main/z/znc/znc_0.045-3+etch2_sparc.deb

Debian GNU/Linux 4.0 (lenny)

Source:: http://security.debian.org/pool/updates/main/z/znc/znc_0.058-2+lenny1.dsc; http://security.debian.org/pool/updates/main/z/znc/znc_0.058-2+lenny1.diff.gz; http://security.debian.org/pool/updates/main/z/znc/znc_0.058.orig.tar.gz
Alpha:: http://security.debian.org/pool/updates/main/z/znc/znc_0.058-2+lenny1_alpha.deb
AMD64:: http://security.debian.org/pool/updates/main/z/znc/znc_0.058-2+lenny1_amd64.deb
ARM:: http://security.debian.org/pool/updates/main/z/znc/znc_0.058-2+lenny1_arm.deb
HP Precision:: http://security.debian.org/pool/updates/main/z/znc/znc_0.058-2+lenny1_hppa.deb
Intel IA-32:: http://security.debian.org/pool/updates/main/z/znc/znc_0.058-2+lenny1_i386.deb
Intel IA-64:: http://security.debian.org/pool/updates/main/z/znc/znc_0.058-2+lenny1_ia64.deb
Big-endian MIPS:: http://security.debian.org/pool/updates/main/z/znc/znc_0.058-2+lenny1_mips.deb
Little-endian MIPS:: http://security.debian.org/pool/updates/main/z/znc/znc_0.058-2+lenny1_mipsel.deb
PowerPC:: http://security.debian.org/pool/updates/main/z/znc/znc_0.058-2+lenny1_powerpc.deb
IBM S/390:: http://security.debian.org/pool/updates/main/z/znc/znc_0.058-2+lenny1_s390.deb
Sun Sparc:: http://security.debian.org/pool/updates/main/z/znc/znc_0.058-2+lenny1_sparc.deb

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