CVE-2011-1678: Input Validation
smbfs in Samba 3.5.8 and earlier attempts to use (1) mount.cifs to append to the /etc/mtab file and (2) umount.cifs to append to the /etc/mtab.tmp file without first checking whether resource limits would interfere, which allows local users to trigger corruption of the /etc/mtab file via a process with a small RLIMITFSIZE value, a related issue to CVE-2011-1089.
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2011-1678?
CVE-2011-1678 has a medium severity rating due to its potential for local users to corrupt important system files.
How do I fix CVE-2011-1678?
To fix CVE-2011-1678, upgrade Samba to version 3.5.9 or later, which addresses the file handling issues.
What types of systems are affected by CVE-2011-1678?
CVE-2011-1678 affects systems running Samba version 3.5.8 and earlier.
Can CVE-2011-1678 lead to unauthorized access?
While CVE-2011-1678 does not directly lead to unauthorized access, it allows for file corruption which could lead to system instability.
Who is primarily impacted by CVE-2011-1678?
Local users on systems running vulnerable versions of Samba are primarily impacted by CVE-2011-1678.