National Vulnerability Database (NVD) National Vulnerability Database (CVE-2009-2908)

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NVD contains:

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Last updated: Sun Nov 22 14:44:37 EST 2009

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NIST Security Configuration Checklists - CSD

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Vulnerability Summary for CVE-2009-2908

Original release date:10/13/2009

Last revised:11/06/2009

Source: US-CERT/NIST

Overview

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.

Impact

CVSS Severity (version 2.0):

CVSS v2 Base Score:4.9 (MEDIUM) (AV:L/AC:L/Au:N/C:N/I:N/A:C) (legend)

Impact Subscore: 6.9

Exploitability Subscore: 3.9

CVSS Version 2 Metrics:

Access Vector: Locally exploitable

Access Complexity: Low

Authentication: Not required to exploit

Impact Type:Allows disruption of serviceUnknown

Vendor Statements (disclaimer)

Official Statement from Red Hat (11/04/2009)

The Linux kernel as shipped with Red Hat Enterprise Linux 3, 4, and Red Hat Enterprise MRG do not include support for eCryptfs, and therefore are not affected by this issue. It was addressed in Red Hat Enterprise Linux 5 via: https://rhn.redhat.com/errata/RHSA-2009-1548.html

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External Source: BID

Name: 36639

Type: Patch Information

Hyperlink:http://www.securityfocus.com/bid/36639

External Source: FEDORA

Name: FEDORA-2009-10525

Hyperlink:https://www.redhat.com/archives/fedora-package-announce/2009-October/msg00483.html

External Source: REDHAT

Name: RHSA-2009:1548

Hyperlink:https://rhn.redhat.com/errata/RHSA-2009-1548.html

External Source: CONFIRM

Name: https://bugzilla.redhat.com/show_bug.cgi?id=527534