#VU45287 Buffer overflow in Samba - CVE-2011-0719
Vulnerability identifier: #VU45287
Vulnerability risk: Medium
CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Green]
CVE-ID:
CWE-ID:
CWE-119
Exploitation vector: Network
Exploit availability: No
Vulnerable software:
Samba
Server applications /
Directory software, identity management
Vendor: Samba
Description
The vulnerability allows a remote non-authenticated attacker to perform service disruption.
Samba 3.x before 3.3.15, 3.4.x before 3.4.12, and 3.5.x before 3.5.7 does not perform range checks for file descriptors before use of the FD_SET macro, which allows remote attackers to cause a denial of service (stack memory corruption, and infinite loop or daemon crash) by opening a large number of files, related to (1) Winbind or (2) smbd.
Mitigation
Install update from vendor's website.
Vulnerable software versions
Samba: 3.0.0 - 3.0.37, 3.1.0, 3.2.0 - 3.2.15, 3.3.0 - 3.3.14, 3.4.0 - 3.4.11, 3.5.0 - 3.5.6
External links
https://lists.apple.com/archives/security-announce/2011//Jun/msg00000.html
https://lists.fedoraproject.org/pipermail/package-announce/2011-March/056229.html
https://lists.fedoraproject.org/pipermail/package-announce/2011-March/056241.html
https://marc.info/?l=bugtraq&m=130835366526620&w=2
https://samba.org/samba/security/CVE-2011-0719.html
https://secunia.com/advisories/43482
https://secunia.com/advisories/43503
https://secunia.com/advisories/43512
https://secunia.com/advisories/43517
https://secunia.com/advisories/43556
https://secunia.com/advisories/43557
https://secunia.com/advisories/43843
https://slackware.com/security/viewer.php?l=slackware-security&y=2011&m=slackware-security.593629
https://support.apple.com/kb/HT4723
https://www.debian.org/security/2011/dsa-2175
https://www.mandriva.com/security/advisories?name=MDVSA-2011:038
https://www.redhat.com/support/errata/RHSA-2011-0305.html
https://www.redhat.com/support/errata/RHSA-2011-0306.html
https://www.samba.org/samba/history/samba-3.3.15.html
https://www.samba.org/samba/history/samba-3.4.12.html
https://www.samba.org/samba/history/samba-3.5.7.html
https://www.securityfocus.com/bid/46597
https://www.securitytracker.com/id?1025132
https://www.ubuntu.com/usn/USN-1075-1
https://www.vupen.com/english/advisories/2011/0517
https://www.vupen.com/english/advisories/2011/0518
https://www.vupen.com/english/advisories/2011/0519
https://www.vupen.com/english/advisories/2011/0520
https://www.vupen.com/english/advisories/2011/0522
https://www.vupen.com/english/advisories/2011/0541
https://www.vupen.com/english/advisories/2011/0702
https://bugzilla.redhat.com/show_bug.cgi?id=678328
https://exchange.xforce.ibmcloud.com/vulnerabilities/65724
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
