Debian Security Advisory

DSA-295-1 pptpd -- buffer overflow

Date Reported:

30 Apr 2003

Affected Packages:

pptpd

Vulnerable:

Yes

Security database references:

In Mitre's CVE dictionary: CAN-2003-0213.

More information:

Timo Sirainen discovered a vulnerability in pptpd, a Point to Point Tunneling Server, which implements PPTP-over-IPSEC and is commonly used to create Virtual Private Networks (VPN). By specifying a small packet length an attacker is able to overflow a buffer and execute code under the user id that runs pptpd, probably root. An exploit for this problem is already circulating.

For the stable distribution (woody) this problem has been fixed in version 1.1.2-1.4.

For the old stable distribution (potato) this problem has been fixed in version 1.0.0-4.2.

For the unstable distribution (sid) this problem has been fixed in version 1.1.4-0.b3.2.

We recommend that you upgrade your pptpd package immediately.

Fixed in:

Debian GNU/Linux 2.2 (potato)

Source:

http://security.debian.org/pool/updates/main/p/pptpd/pptpd_1.0.0-4.2.dsc

http://security.debian.org/pool/updates/main/p/pptpd/pptpd_1.0.0-4.2.diff.gz

http://security.debian.org/pool/updates/main/p/pptpd/pptpd_1.0.0.orig.tar.gz

Alpha:

http://security.debian.org/pool/updates/main/p/pptpd/pptpd_1.0.0-4.2_alpha.deb

ARM:

http://security.debian.org/pool/updates/main/p/pptpd/pptpd_1.0.0-4.2_arm.deb

Intel IA-32:

http://security.debian.org/pool/updates/main/p/pptpd/pptpd_1.0.0-4.2_i386.deb

Motorola 680x0:

http://security.debian.org/pool/updates/main/p/pptpd/pptpd_1.0.0-4.2_m68k.deb

PowerPC:

http://security.debian.org/pool/updates/main/p/pptpd/pptpd_1.0.0-4.2_powerpc.deb

Sun Sparc:

http://security.debian.org/pool/updates/main/p/pptpd/pptpd_1.0.0-4.2_sparc.deb

Debian GNU/Linux 3.0 (woody)

Source:

http://security.debian.org/pool/updates/main/p/pptpd/pptpd_1.1.2-1.4.dsc

http://security.debian.org/pool/updates/main/p/pptpd/pptpd_1.1.2-1.4.diff.gz

http://security.debian.org/pool/updates/main/p/pptpd/pptpd_1.1.2.orig.tar.gz

Alpha:

http://security.debian.org/pool/updates/main/p/pptpd/pptpd_1.1.2-1.4_alpha.deb

ARM:

http://security.debian.org/pool/updates/main/p/pptpd/pptpd_1.1.2-1.4_arm.deb

Intel IA-32:

http://security.debian.org/pool/updates/main/p/pptpd/pptpd_1.1.2-1.4_i386.deb

Intel IA-64:

http://security.debian.org/pool/updates/main/p/pptpd/pptpd_1.1.2-1.4_ia64.deb

HPPA:

http://security.debian.org/pool/updates/main/p/pptpd/pptpd_1.1.2-1.4_hppa.deb

Motorola 680x0:

http://security.debian.org/pool/updates/main/p/pptpd/pptpd_1.1.2-1.4_m68k.deb

Big endian MIPS:

http://security.debian.org/pool/updates/main/p/pptpd/pptpd_1.1.2-1.4_mips.deb

Little endian MIPS:

http://security.debian.org/pool/updates/main/p/pptpd/pptpd_1.1.2-1.4_mipsel.deb

PowerPC:

http://security.debian.org/pool/updates/main/p/pptpd/pptpd_1.1.2-1.4_powerpc.deb

IBM S/390:

http://security.debian.org/pool/updates/main/p/pptpd/pptpd_1.1.2-1.4_s390.deb

Sun Sparc:

http://security.debian.org/pool/updates/main/p/pptpd/pptpd_1.1.2-1.4_sparc.deb

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