Input validation error in Samba
| Risk | Low |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2011-1678 |
| CWE-ID | CWE-20 |
| Exploitation vector | Local |
| Public exploit | N/A |
| Vulnerable software Subscribe |
Samba Server applications / Directory software, identity management |
| Vendor | Samba |
Security Bulletin
This security bulletin contains one low risk vulnerability.
1) Input validation error
EUVDB-ID: #VU33333
Risk: Low
CVSSv3.1: 4.5 [CVSS:3.1/CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C]
CVE-ID: CVE-2011-1678
CWE-ID:
CWE-20 - Improper input validation
Exploit availability: No
DescriptionThe vulnerability allows a local non-authenticated attacker to read and manipulate data.
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.
MitigationInstall update from vendor's website.
Vulnerable software versionsSamba: 3.5.0 - 3.5.8
External linkshttp://openwall.com/lists/oss-security/2011/03/04/10
http://openwall.com/lists/oss-security/2011/03/04/11
http://openwall.com/lists/oss-security/2011/03/04/12
http://openwall.com/lists/oss-security/2011/03/04/9
http://openwall.com/lists/oss-security/2011/03/05/3
http://openwall.com/lists/oss-security/2011/03/05/7
http://openwall.com/lists/oss-security/2011/03/07/9
http://openwall.com/lists/oss-security/2011/03/14/16
http://openwall.com/lists/oss-security/2011/03/14/5
http://openwall.com/lists/oss-security/2011/03/14/7
http://openwall.com/lists/oss-security/2011/03/15/6
http://openwall.com/lists/oss-security/2011/03/22/4
http://openwall.com/lists/oss-security/2011/03/22/6
http://openwall.com/lists/oss-security/2011/03/31/3
http://openwall.com/lists/oss-security/2011/03/31/4
http://openwall.com/lists/oss-security/2011/04/01/2
http://www.mandriva.com/security/advisories?name=MDVSA-2011:148
http://bugzilla.redhat.com/show_bug.cgi?id=688980
http://exchange.xforce.ibmcloud.com/vulnerabilities/66702
Q & A
Can this vulnerability be exploited remotely?
No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.
How the attacker can exploit this vulnerability?
The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.
The attacker would have to login to the system and perform certain actions in order to exploit this vulnerability.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
