CVE-2011-1678: Input Validation
First published: Sun Apr 10 2011(Updated: )
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 RLIMIT_FSIZE value, a related issue to CVE-2011-1089.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Samba | <=3.5.8 |
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Reference Links
- http://openwall.com/lists/oss-security/2011/03/04/11
- http://openwall.com/lists/oss-security/2011/03/22/6
- http://openwall.com/lists/oss-security/2011/03/14/7
- http://openwall.com/lists/oss-security/2011/03/04/10
- https://bugzilla.redhat.com/show_bug.cgi?id=688980
- http://openwall.com/lists/oss-security/2011/03/05/7
- http://openwall.com/lists/oss-security/2011/03/14/5
- http://openwall.com/lists/oss-security/2011/03/05/3
- http://openwall.com/lists/oss-security/2011/03/22/4
- http://openwall.com/lists/oss-security/2011/03/14/16
- http://openwall.com/lists/oss-security/2011/04/01/2
- http://openwall.com/lists/oss-security/2011/03/04/9
- http://openwall.com/lists/oss-security/2011/03/07/9
- http://openwall.com/lists/oss-security/2011/03/31/4
- http://openwall.com/lists/oss-security/2011/03/15/6
- http://openwall.com/lists/oss-security/2011/03/04/12
- http://openwall.com/lists/oss-security/2011/03/31/3
- http://www.mandriva.com/security/advisories?name=MDVSA-2011:148
- https://exchange.xforce.ibmcloud.com/vulnerabilities/66702
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.
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- version/samba/3.5.8