slrn newsreader wrapping/unwrapping buffer overflow
| slrn-wrapping-bo (6213) |  High Risk |
Description:
The slrn newsreader in some Linux distributions is vulnerable to a buffer overflow in the wrapping/unwrapping functions. By sending a message with a long header, a remote attacker can overflow a buffer and crash the system. If arbitrary code is embedded in the message, it may be possible to execute code on the system. The wrapping function is not enabled by default, but it can be enabled by modifying the configuration or pressing W while viewing a message.
Platforms Affected:
- Debian, Debian Linux 2.2
- FreeBSD, FreeBSD 3.5.1
- FreeBSD, FreeBSD 4.2
- Immunix, Immunix OS 6.2
- Immunix, Immunix OS 7.0
- Immunix, Immunix OS 7.0-beta
- RedHat, Linux 6.0
- RedHat, Linux 6.1
- RedHat, Linux 6.2
- RedHat, Linux 7
- RedHat, Linux 7.1
- RedHat, Linux 7.2
- RedHat, Linux 7.3
- slrn, slrn 0.9.6.x and prior
Remedy:
For Debian Linux 2.2 (potato):
Upgrade to the latest version of slrn (0.9.6.2-9potato1 or later), as listed in DSA-040-1. See References.
For Linux-Mandrake 6.0, 6.1, 7.0, 7.1, Corporate Server 1.0.1:
Upgrade to the latest version of slrn (0.9.6.3-10.2 or later), as listed in MandrakeSoft Security Advisory MDKSA-2001:028 : slrn. See References.
For Linux-Mandrake 7.2:
Upgrade to the latest version of slrn (0.9.6.3-10.1 or later), as listed in MandrakeSoft Security Advisory MDKSA-2001:028 : slrn. See References.
For Red Hat 6.0, 6.1, 6.2:
Upgrade to the latest version of slrn (0.9.6.4-0.6 or later), as listed in Red Hat Security Advisory
RHSA-2001:028-02. See References.
For Red Hat 7.0:
Upgrade to the latest version of slrn (0.9.6.4-0.7 or later), as listed in Red Hat Security Advisory
RHSA-2001:028-02. See References.
For Immunix OS 6.2:
Upgrade to the latest version of slrn (0.9.6.4-0.6 or later), as listed in Immunix OS Security Advisory IMNX-2001-70-007-01. See References.
For Immunix OS 7.0-beta and 7.0:
Upgrade to the latest version of slrn (0.9.6.4-0.7 or later), as listed in Immunix OS Security Advisory IMNX-2001-70-007-01. See References.
For Conectiva Linux 4.0, 4.1, 4.2, 5.0, 5.1, and 6.0:
Upgrade to the latest version of slrn (0.9.6.3-1cl or later), as listed in Conectiva Linux Security Announcement CLA-2001:383. See References.
For FreeBSD 3.5.1 and 4.2:
Upgrade to the latest version of slrn (0.9.7.0 or later), as listed in FreeBSD Security Advisory FreeBSD-SA-01:37. See References.
For other distributions:
Contact your vendor for upgrade or patch information.
Consequences:
Gain Privileges
References:
- Conectiva Linux Announcement CLSA-2001:383, Remote buffer overflow in slrn at http://beta.conectiva.com.br/atualizacoes/?id=a&anuncio=000383.
- FreeBSD Security Advisory FreeBSD-SA-01:37, slrn contains remotely-exploitable buffer overflow at ftp://ftp.freebsd.org/pub/FreeBSD/CERT/advisories/FreeBSD-SA-01:37.slrn.asc.
- Immunix OS Security Advisory IMNX-2001-70-007-01, slrn at http://online.securityfocus.com/advisories/3155. (From SecurityFocus archive.)
- MandrakeSoft Security Advisory MDKSA-2001:028, slrn at http://wwwnew.mandriva.com/security/advisories?name=MDKSA-2001:028.
- BID-2493: SLRN Long Header Buffer Overflow Vulnerability
- CVE-2001-0441: Buffer overflow in (1) wrapping and (2) unwrapping functions of slrn news reader before 0.9.7.0 allows remote attackers to execute arbitrary commands via a long message header.
- DSA-040: slrn -- buffer overflow
- RHSA-2001-028: buffer overflow in slrn
Reported:
Mar 09, 2001
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