CVE-2008-1673

The asn1 implementation in (a) the Linux kernel 2.4 before 2.4.36.6 and 2.6 before 2.6.25.5, as used in the cifs and ip_nat_snmp_basic modules; and (b) the gxsnmp package; does not properly validate length values during decoding of ASN.1 BER data, which allows remote attackers to cause a denial of service (crash) or execute arbitrary code via (1) a length greater than the working buffer, which can lead to an unspecified overflow; (2) an oid length of zero, which can lead to an off-by-one error; or (3) an indefinite length for a primitive encoding.

🔗 References (68)

• secalert@redhathttp://git.kernel.org/?p=linux/kernel/git/stable/linux-2.6.25.y.git%3Ba=commit%3Bh=33afb8403f361919aa5c8fe1d0a4f5ddbfbbea3c
• secalert@redhathttp://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=ddb2c43594f22843e9f3153da151deaba1a834c5
• secalert@redhathttp://kernel.org/pub/linux/kernel/v2.4/ChangeLog-2.4.36.6
• secalert@redhathttp://kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.25.5
• secalert@redhathttp://lists.opensuse.org/opensuse-security-announce/2008-07/msg00007.html
• secalert@redhathttp://lists.opensuse.org/opensuse-security-announce/2008-07/msg00012.html
• secalert@redhathttp://lists.opensuse.org/opensuse-security-announce/2008-10/msg00000.html
• secalert@redhathttp://lists.opensuse.org/opensuse-security-announce/2008-10/msg00001.html
• secalert@redhathttp://lists.opensuse.org/opensuse-security-announce/2008-10/msg00003.html
• secalert@redhathttp://lists.opensuse.org/opensuse-security-announce/2008-10/msg00008.html
• secalert@redhathttp://lists.opensuse.org/opensuse-security-announce/2008-11/msg00001.html
• secalert@redhathttp://secunia.com/advisories/30000
• secalert@redhathttp://secunia.com/advisories/30580
• secalert@redhathttp://secunia.com/advisories/30644
• secalert@redhathttp://secunia.com/advisories/30658