CVE-2013-4247

Public Exploit

Description

Off-by-one error in the build_unc_path_to_root function in fs/cifs/connect.c in the Linux kernel before 3.9.6 allows remote attackers to cause a denial of service (memory corruption and system crash) via a DFS share mount operation that triggers use of an unexpected DFS referral name length.

Category

7.8
CVSS
Severity: High
CVSS 2.0 •
EPSS 1.23% Top 25%
Vendor Advisory kernel.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://github.com/torvalds/linux/commit/1fc29bacedeabb278080e31bb9c1ecb49f143c3b exploit third party advisory patch
https://bugzilla.redhat.com/show_bug.cgi?id=998401 issue tracking third party advisory
http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.9.6 vendor advisory
http://www.openwall.com/lists/oss-security/2013/08/14/10 third party advisory mailing list
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=1fc29bacedeabb278080e31bb9c1ecb49f143c3b

Frequently Asked Questions

What is the severity of CVE-2013-4247?
CVE-2013-4247 has been scored as a high severity vulnerability.
How to fix CVE-2013-4247?
To fix CVE-2013-4247, 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-2013-4247 being actively exploited in the wild?
It is possible that CVE-2013-4247 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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