SB2011102701 - Heap-based buffer overflow in OpenLDAP
Published: October 27, 2011 Updated: August 3, 2020
Security Bulletin ID
SB2011102701
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Heap-based buffer overflow (CVE-ID: CVE-2011-4079)
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error in Off-by-one error in the UTF8StringNormalize function in OpenLDAP 2.4.26 and earlier. A remote attacker can use a zero-length string that triggers a heap-based buffer overflow to trigger heap-based buffer overflow and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Remediation
Install update from vendor's website.
References
- http://secunia.com/advisories/46599
- http://security.gentoo.org/glsa/glsa-201406-36.xml
- http://www.openldap.org/devel/gitweb.cgi?p=openldap.git;a=commitdiff;h=507238713b71208ec4f262f312cb495a302df9e9
- http://www.openldap.org/its/index.cgi/Software%20Bugs?id=7059;selectid=7059
- http://www.openwall.com/lists/oss-security/2011/10/26/5
- http://www.openwall.com/lists/oss-security/2011/10/26/9
- http://www.securityfocus.com/bid/50384
- http://www.ubuntu.com/usn/USN-1266-1
- https://bugzilla.redhat.com/show_bug.cgi?id=749324
- https://exchange.xforce.ibmcloud.com/vulnerabilities/70991