Debian Security Advisory

DSA-216-1 fetchmail -- buffer overflow

Date Reported:
24 Dec 2002
Affected Packages:
fetchmail
Vulnerable:
Yes
Security database references:
In the Bugtraq database (at SecurityFocus): BugTraq ID 6390.
In Mitre's CVE dictionary: CVE-2002-1365.
More information:

Stefan Esser of e-matters discovered a buffer overflow in fetchmail, an SSL enabled POP3, APOP and IMAP mail gatherer/forwarder. When fetchmail retrieves a mail all headers that contain addresses are searched for local addresses. If a hostname is missing, fetchmail appends it but doesn't reserve enough space for it. This heap overflow can be used by remote attackers to crash it or to execute arbitrary code with the privileges of the user running fetchmail.

For the current stable distribution (woody) this problem has been fixed in version 5.9.11-6.2 of fetchmail and fetchmail-ssl.

For the old stable distribution (potato) this problem has been fixed in version 5.3.3-4.3.

For the unstable distribution (sid) this problem has been fixed in version 6.2.0-1 of fetchmail and fetchmail-ssl.

We recommend that you upgrade your fetchmail packages.

Fixed in:

Debian GNU/Linux 2.2 (potato)

Source:
http://security.debian.org/pool/updates/main/f/fetchmail/fetchmail_5.3.3-4.3.dsc
http://security.debian.org/pool/updates/main/f/fetchmail/fetchmail_5.3.3-4.3.diff.gz
http://security.debian.org/pool/updates/main/f/fetchmail/fetchmail_5.3.3.orig.tar.gz
Architecture-independent component:
http://security.debian.org/pool/updates/main/f/fetchmail/fetchmailconf_5.3.3-4.3_all.deb
Alpha:
http://security.debian.org/pool/updates/main/f/fetchmail/fetchmail_5.3.3-4.3_alpha.deb
ARM:
http://security.debian.org/pool/updates/main/f/fetchmail/fetchmail_5.3.3-4.3_arm.deb
Intel IA-32:
http://security.debian.org/pool/updates/main/f/fetchmail/fetchmail_5.3.3-4.3_i386.deb
Motorola 680x0:
http://security.debian.org/pool/updates/main/f/fetchmail/fetchmail_5.3.3-4.3_m68k.deb
PowerPC:
http://security.debian.org/pool/updates/main/f/fetchmail/fetchmail_5.3.3-4.3_powerpc.deb
Sun Sparc:
http://security.debian.org/pool/updates/main/f/fetchmail/fetchmail_5.3.3-4.3_sparc.deb

Debian GNU/Linux 3.0 (woody)

Source:
http://security.debian.org/pool/updates/main/f/fetchmail/fetchmail_5.9.11-6.2.dsc
http://security.debian.org/pool/updates/main/f/fetchmail/fetchmail_5.9.11-6.2.diff.gz
http://security.debian.org/pool/updates/main/f/fetchmail/fetchmail_5.9.11.orig.tar.gz
http://security.debian.org/pool/updates/main/f/fetchmail-ssl/fetchmail-ssl_5.9.11-6.2.dsc
http://security.debian.org/pool/updates/main/f/fetchmail-ssl/fetchmail-ssl_5.9.11-6.2.diff.gz
http://security.debian.org/pool/updates/main/f/fetchmail-ssl/fetchmail-ssl_5.9.11.orig.tar.gz
Architecture-independent component:
http://security.debian.org/pool/updates/main/f/fetchmail/fetchmail-common_5.9.11-6.2_all.deb
http://security.debian.org/pool/updates/main/f/fetchmail/fetchmailconf_5.9.11-6.2_all.deb
Alpha:
http://security.debian.org/pool/updates/main/f/fetchmail/fetchmail_5.9.11-6.2_alpha.deb
http://security.debian.org/pool/updates/main/f/fetchmail-ssl/fetchmail-ssl_5.9.11-6.2_alpha.deb
ARM:
http://security.debian.org/pool/updates/main/f/fetchmail/fetchmail_5.9.11-6.2_arm.deb
http://security.debian.org/pool/updates/main/f/fetchmail-ssl/fetchmail-ssl_5.9.11-6.2_arm.deb
Intel IA-32:
http://security.debian.org/pool/updates/main/f/fetchmail/fetchmail_5.9.11-6.2_i386.deb
http://security.debian.org/pool/updates/main/f/fetchmail-ssl/fetchmail-ssl_5.9.11-6.2_i386.deb
Intel IA-64:
http://security.debian.org/pool/updates/main/f/fetchmail/fetchmail_5.9.11-6.2_ia64.deb
http://security.debian.org/pool/updates/main/f/fetchmail-ssl/fetchmail-ssl_5.9.11-6.2_ia64.deb
HPPA:
http://security.debian.org/pool/updates/main/f/fetchmail/fetchmail_5.9.11-6.2_hppa.deb
http://security.debian.org/pool/updates/main/f/fetchmail-ssl/fetchmail-ssl_5.9.11-6.2_hppa.deb
Motorola 680x0:
http://security.debian.org/pool/updates/main/f/fetchmail/fetchmail_5.9.11-6.2_m68k.deb
http://security.debian.org/pool/updates/main/f/fetchmail-ssl/fetchmail-ssl_5.9.11-6.2_m68k.deb
Big endian MIPS:
http://security.debian.org/pool/updates/main/f/fetchmail/fetchmail_5.9.11-6.2_mips.deb
http://security.debian.org/pool/updates/main/f/fetchmail-ssl/fetchmail-ssl_5.9.11-6.2_mips.deb
Little endian MIPS:
http://security.debian.org/pool/updates/main/f/fetchmail/fetchmail_5.9.11-6.2_mipsel.deb
http://security.debian.org/pool/updates/main/f/fetchmail-ssl/fetchmail-ssl_5.9.11-6.2_mipsel.deb
PowerPC:
http://security.debian.org/pool/updates/main/f/fetchmail/fetchmail_5.9.11-6.2_powerpc.deb
http://security.debian.org/pool/updates/main/f/fetchmail-ssl/fetchmail-ssl_5.9.11-6.2_powerpc.deb
IBM S/390:
http://security.debian.org/pool/updates/main/f/fetchmail/fetchmail_5.9.11-6.2_s390.deb
http://security.debian.org/pool/updates/main/f/fetchmail-ssl/fetchmail-ssl_5.9.11-6.2_s390.deb
Sun Sparc:
http://security.debian.org/pool/updates/main/f/fetchmail/fetchmail_5.9.11-6.2_sparc.deb
http://security.debian.org/pool/updates/main/f/fetchmail-ssl/fetchmail-ssl_5.9.11-6.2_sparc.deb

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