National Vulnerability Database

National Vulnerability Database

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    Vulnerabilities Detail

CVE-2009-2908 Detail

Current Description

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.

Source:  MITRE
View Analysis Description

Impact

CVSS v2.0 Severity and Metrics:

Base Score: 4.9 MEDIUM
Vector: (AV:L/AC:L/Au:N/C:N/I:N/A:C) (V2 legend)
Impact Subscore: 6.9
Exploitability Subscore: 3.9

Access Vector (AV): Local
Access Complexity (AC): Low
Authentication (AU): None
Confidentiality (C): None
Integrity (I): None
Availability (A): Complete
Additional Information:
Allows disruption of service

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

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://git.kernel.org/?p=linux/kernel/git/stable/linux-2.6.31.y.git;a=commit;h=afc2b6932f48f200736d3e36ad66fee0ec733136 Exploit
http://lists.vmware.com/pipermail/security-announce/2010/000082.html
http://www.openwall.com/lists/oss-security/2009/10/06/1
http://www.securityfocus.com/bid/36639 Patch
http://www.ubuntu.com/usn/USN-852-1
http://www.vupen.com/english/advisories/2010/0528
https://bugs.launchpad.net/ecryptfs/+bug/387073
https://bugzilla.redhat.com/show_bug.cgi?id=527534
https://exchange.xforce.ibmcloud.com/vulnerabilities/53693
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10216
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6992
https://rhn.redhat.com/errata/RHSA-2009-1548.html
https://www.redhat.com/archives/fedora-package-announce/2009-October/msg00483.html

Technical Details

Vulnerability Type (View All)

Known Affected Software Configurations Switch to CPE 2.2

Configuration 1 ( hide )
 cpe:2.3:o:linux:linux_kernel:2.6.31:*:*:*:*:*:*:*
     Show Matching CPE(s)


Change History

3 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2009-2908
NVD Published Date:
10/13/2009
NVD Last Modified:
09/18/2017