National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2009-2908 Detail

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      Last Modified:  10/13/2009

Quick Info

CVE Dictionary Entry:
CVE-2009-2908
Original release date:
10/13/2009
Last revised:
09/18/2017
Source:
US-CERT/NIST

Impact

CVSS Severity (version 2.0):
CVSS v2 Base Score:
4.9 MEDIUM
Vector:
(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 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 Type Source Name
http://git.kernel.org/?p=linux/kernel/git/stable/linux-2.6.31.y.git;a=commit;h=afc2b6932f48f200736d3e36ad66fee0ec733136 Exploit External Source CONFIRM http://git.kernel.org/?p=linux/kernel/git/stable/linux-2.6.31.y.git;a=commit;h=afc2b6932f48f200736d3e36ad66fee0ec733136
http://lists.vmware.com/pipermail/security-announce/2010/000082.html External Source MLIST [security-announce] 20100303 VMSA-2010-0004 ESX Service Console and vMA third party updates
http://www.openwall.com/lists/oss-security/2009/10/06/1 External Source MLIST [oss-security] 20091006 Kernel ecryptfs CVE id (CVE-2009-2908)
http://www.securityfocus.com/bid/36639 Patch External Source BID 36639
http://www.ubuntu.com/usn/USN-852-1 External Source UBUNTU USN-852-1
http://www.vupen.com/english/advisories/2010/0528 External Source VUPEN ADV-2010-0528
https://bugs.launchpad.net/ecryptfs/+bug/387073 External Source MISC https://bugs.launchpad.net/ecryptfs/+bug/387073
https://bugzilla.redhat.com/show_bug.cgi?id=527534 External Source CONFIRM https://bugzilla.redhat.com/show_bug.cgi?id=527534
https://exchange.xforce.ibmcloud.com/vulnerabilities/53693 External Source XF kernel-ecryptfs-dos(53693)
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10216 External Source OVAL oval:org.mitre.oval:def:10216
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6992 External Source OVAL oval:org.mitre.oval:def:6992
https://rhn.redhat.com/errata/RHSA-2009-1548.html External Source REDHAT RHSA-2009:1548
https://www.redhat.com/archives/fedora-package-announce/2009-October/msg00483.html External Source FEDORA FEDORA-2009-10525

References to Check Content

Identifier:
oval:org.mitre.oval:def:10216
Check System:
http://oval.mitre.org/XMLSchema/oval-definitions-5
Hyperlink:
http://oval.mitre.org/repository/data/DownloadDefinition?id=oval:org.mitre.oval:def:10216
Identifier:
oval:org.mitre.oval:def:6992
Check System:
http://oval.mitre.org/XMLSchema/oval-definitions-5
Hyperlink:
http://oval.mitre.org/repository/data/DownloadDefinition?id=oval:org.mitre.oval:def:6992

Technical Details

Vulnerability Type (View All)

Vulnerable software and versions Switch to CPE 2.2

Configuration 1
OR
cpe:2.3:o:linux:linux_kernel:2.6.31:*:*:*:*:*:*:*

Denotes Vulnerable Software
Are we missing a CPE here? Please let us know.

Change History 3 change records found - show changes