58880 : Linux Kernel eCryptfs fs/ecryptfs/inode.c d_delete Function NULL Dereference Local DoS
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Timeline

Disclosure Date
2009-10-08

Description

<em style='font-weight:bold;'>(Description Provided by <a href="http://cve.mitre.org/cgi-bin/cvename.cgi?name=2009-2908" target="_blank">CVE</a>)</em> : The d_delete function in fs/ecryptfs/inode.c in eCryptfs in the Linux kernel 2.6.31 allows local users to cause a denial of service (kernel OOPS) and possibly execute arbitrary code via unspecified vectors that cause a "negative dentry" and trigger a NULL pointer dereference, as demonstrated via a Mutt temporary directory in an eCryptfs mount.

Classification

Location: Local Access Required
Attack Type: Denial of Service
Impact: Loss of Availability
Solution: Patch / RCS
Exploit: Exploit Public
Disclosure: Vendor Verified

Solution

Currently, there are no known workarounds or upgrades to correct this issue. However, vendors have released patches to address this vulnerability.

Products

Unknown or Incomplete

References

OVAL ID: 10216 6992
CVE ID: 2009-2908 (see also: NVD)
Bugtraq ID: 36639
Secunia Advisory ID: 37075 37105 37121 37163 37243 37282 38794 38834
ISS X-Force ID: 53693
VUPEN Advisory: ADV-2010-0528
Vendor Specific News/Changelog Entry: http://git.kernel.org/?p=linux/kernel/git/stable/linux-2.6.31.y.git;a=commit;h=afc2b6932f48f200736d3e36ad66fee0ec733136
http://lists.debian.org/debian-security-announce/2009/msg00237.html
http://lists.debian.org/debian-security-announce/2009/msg00251.html
http://lists.vmware.com/pipermail/security-announce/2010/000082.html
https://bugzilla.redhat.com/show_bug.cgi?id=527534
https://www.redhat.com/archives/fedora-package-announce/2009-October/msg00656.html
Other Advisory URL: http://www.openwall.com/lists/oss-security/2009/10/06/1
https://bugs.launchpad.net/ecryptfs/+bug/387073
Vendor Specific Advisory URL: http://www.ubuntu.com/usn/USN-852-1
RedHat RHSA: RHSA-2009:1548

Credit

Unknown or Incomplete

CVSSv2 Score

CVSSv2 Base Score = 4.9
Source: nvd.nist.gov | Generated: 2009-10-13 | Disagree?

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