SB2009092201 - Permissions, privileges, and access controls in Linux kernel nfsd
Published: September 22, 2009
Security Bulletin ID
SB2009092201
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Permissions, privileges, and access controls (CVE-ID: CVE-2009-3286)
The vulnerability allows a local user to read and manipulate data.
The vulnerability exists due to security restrictions bypass error within the nfsd_create_v3() function in fs/nfsd/vfs.c, within the do_open_lookup() function in fs/nfsd/nfs4proc.c, within the nfsd3_proc_create() function in fs/nfsd/nfs3proc.c. A local user can read and manipulate data.
Remediation
Install update from vendor's website.
References
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=81ac95c5
- http://lists.opensuse.org/opensuse-security-announce/2010-02/msg00005.html
- http://lists.vmware.com/pipermail/security-announce/2010/000082.html
- http://secunia.com/advisories/37105
- http://secunia.com/advisories/38794
- http://secunia.com/advisories/38834
- http://www.openwall.com/lists/oss-security/2009/09/21/2
- http://www.ubuntu.com/usn/USN-852-1
- http://www.vupen.com/english/advisories/2010/0528
- https://bugzilla.redhat.com/show_bug.cgi?id=524520
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A7527
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9757
- https://rhn.redhat.com/errata/RHSA-2009-1548.html