CVE-2007-3642

Description

The decode_choice function in net/netfilter/nf_conntrack_h323_asn1.c in the Linux kernel before 2.6.20.15, 2.6.21.x before 2.6.21.6, and before 2.6.22 allows remote attackers to cause a denial of service (crash) via an encoded, out-of-range index value for a choice field, which triggers a NULL pointer dereference.

Category

7.8
CVSS
Severity: High
CVSS 2.0 •
EPSS 1.91% Top 20%
Vendor Advisory ubuntu.com Vendor Advisory debian.org Vendor Advisory mandriva.com Vendor Advisory secunia.com Vendor Advisory secunia.com Vendor Advisory secunia.com Vendor Advisory vupen.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://secunia.com/advisories/27212 third party advisory vendor advisory
http://secunia.com/advisories/25955 third party advisory patch vendor advisory
http://kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.21.6
http://www.ubuntu.com/usn/usn-510-1 vendor advisory
http://www.debian.org/security/2007/dsa-1356 vendor advisory
http://www.securityfocus.com/bid/24818 vdb entry
http://www.vupen.com/english/advisories/2007/2466 vdb entry vendor advisory
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=25845b5155b55cd77e42655ec24161ba3feffa47
http://kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.22
http://kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.20.15
http://osvdb.org/37117 vdb entry
http://secunia.com/advisories/26450 third party advisory vendor advisory
http://www.mandriva.com/security/advisories?name=MDKSA-2007:195 vendor advisory

Frequently Asked Questions

What is the severity of CVE-2007-3642?
CVE-2007-3642 has been scored as a high severity vulnerability.
How to fix CVE-2007-3642?
To fix CVE-2007-3642, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2007-3642 being actively exploited in the wild?
It is possible that CVE-2007-3642 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~2% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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