NULL pointer dereference in Linux kernel - CVE-2007-3642
Published: July 10, 2007 / Updated: October 31, 2012
Vulnerability identifier: #VU91022
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2007-3642
CWE-ID: CWE-476
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to NULL pointer dereference within the decode_seq() and decode_choice() functions in net/netfilter/nf_conntrack_h323_asn1.c. A remote non-authenticated attacker can perform a denial of service (DoS) attack.
How to mitigate CVE-2007-3642
Install update from vendor's website.
Sources
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=25845b5155b55cd77e42655ec24161ba3feffa47
- http://kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.20.15
- http://kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.21.6
- http://kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.22
- http://osvdb.org/37117
- http://secunia.com/advisories/25955
- http://secunia.com/advisories/26450
- http://secunia.com/advisories/27212
- http://www.debian.org/security/2007/dsa-1356
- http://www.mandriva.com/security/advisories?name=MDKSA-2007:195
- http://www.securityfocus.com/bid/24818
- http://www.ubuntu.com/usn/usn-510-1
- http://www.vupen.com/english/advisories/2007/2466