DSA-357-1 wu-ftpd -- remote root exploit

Debian Security Advisory

DSA-357-1 wu-ftpd -- remote root exploit

Date Reported:

31 Jul 2003

Affected Packages:

wu-ftpd

Vulnerable:

Yes

Security database references:

In the Bugtraq database (at SecurityFocus): BugTraq ID 8315.
In Mitre's CVE dictionary: CVE-2003-0466.

More information:

iSEC Security Research reports that wu-ftpd contains an off-by-one bug in the fb_realpath function which could be exploited by a logged-in user (local or anonymous) to gain root privileges. A demonstration exploit is reportedly available.

For the current stable distribution (woody) this problem has been fixed in version 2.6.2-3woody1.

For the unstable distribution (sid) an update will be available shortly.

We recommend you upgrade your wu-ftpd package immediately.

Fixed in:

Debian GNU/Linux 3.0 (stable)

Source:

http://security.debian.org/pool/updates/main/w/wu-ftpd/wu-ftpd_2.6.2.orig.tar.gz

http://security.debian.org/pool/updates/main/w/wu-ftpd/wu-ftpd_2.6.2-3woody1.dsc

http://security.debian.org/pool/updates/main/w/wu-ftpd/wu-ftpd_2.6.2-3woody1.diff.gz

Architecture-independent component:

http://security.debian.org/pool/updates/main/w/wu-ftpd/wu-ftpd-academ_2.6.2-3woody1_all.deb

Alpha:

http://security.debian.org/pool/updates/main/w/wu-ftpd/wu-ftpd_2.6.2-3woody1_alpha.deb

ARM:

http://security.debian.org/pool/updates/main/w/wu-ftpd/wu-ftpd_2.6.2-3woody1_arm.deb

HP Precision:

http://security.debian.org/pool/updates/main/w/wu-ftpd/wu-ftpd_2.6.2-3woody1_hppa.deb

Intel IA-32:

http://security.debian.org/pool/updates/main/w/wu-ftpd/wu-ftpd_2.6.2-3woody1_i386.deb

Intel IA-64:

http://security.debian.org/pool/updates/main/w/wu-ftpd/wu-ftpd_2.6.2-3woody1_ia64.deb

Motorola 680x0:

http://security.debian.org/pool/updates/main/w/wu-ftpd/wu-ftpd_2.6.2-3woody1_m68k.deb

Big-endian MIPS:

http://security.debian.org/pool/updates/main/w/wu-ftpd/wu-ftpd_2.6.2-3woody1_mips.deb

Little-endian MIPS:

http://security.debian.org/pool/updates/main/w/wu-ftpd/wu-ftpd_2.6.2-3woody1_mipsel.deb

PowerPC:

http://security.debian.org/pool/updates/main/w/wu-ftpd/wu-ftpd_2.6.2-3woody1_powerpc.deb

IBM S/390:

http://security.debian.org/pool/updates/main/w/wu-ftpd/wu-ftpd_2.6.2-3woody1_s390.deb

Sun Sparc:

http://security.debian.org/pool/updates/main/w/wu-ftpd/wu-ftpd_2.6.2-3woody1_sparc.deb

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