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CVE-2011-2724

Publication date 6 September 2011

Last updated 24 July 2024

Ubuntu priority

Medium

Why this priority?

The check_mtab function in client/mount.cifs.c in mount.cifs in smbfs in Samba 3.5.10 and earlier does not properly verify that the (1) device name and (2) mountpoint strings are composed of valid characters, which allows local users to cause a denial of service (mtab corruption) via a crafted string. NOTE: this vulnerability exists because of an incorrect fix for CVE-2010-0547.

Read the notes from the security team

Status

Package Ubuntu Release Status
cifs-utils 11.04 natty
Fixed 2:4.5-2ubuntu0.11.04.1
10.10 maverick
Fixed 2:4.5-2ubuntu0.10.10.1
10.04 LTS lucid Not in release
9.10 karmic Not in release
8.04 LTS hardy Not in release
6.06 LTS dapper Not in release
samba 11.04 natty
Not affected
10.10 maverick
Not affected
10.04 LTS lucid
Fixed 2:3.4.7~dfsg-1ubuntu3.8
9.10 karmic Ignored end of life
8.04 LTS hardy
Not affected
6.06 LTS dapper Ignored end of life

Notes

jdstrand

we ship this suid by default, so this is medium

mdeslaur

hardy's backport didn't suffer from this flaw

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package Patch details
cifs-utils

References

Related Ubuntu Security Notices (USN)

    • USN-1226-2
    • cifs-utils vulnerabilities
    • 4 October 2011

Other references