Heap-based buffer overflow in OpenLDAP



Published: 2011-10-27 | Updated: 2020-08-03
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2011-4079
CWE-ID CWE-122
Exploitation vector Network
Public exploit N/A
Vulnerable software
Subscribe 		OpenLDAP
Server applications / Directory software, identity management

Vendor OpenLDAP.org

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Heap-based buffer overflow

EUVDB-ID: #VU33332

Risk: Low

CVSSv3.1:

CVE-ID: CVE-2011-4079

CWE-ID:

Exploit availability:

Description

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.

Mitigation

Update to version 2.4.27.

Vulnerable software versions

OpenLDAP: 2.4.3 - 2.4.26

Fixed software versions

CPE2.3 External links

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
http://bugzilla.redhat.com/show_bug.cgi?id=749324
http://exchange.xforce.ibmcloud.com/vulnerabilities/70991


Q & A

Can this vulnerability be exploited remotely?

How the attacker can exploit this vulnerability?

Is there known malware, which exploits this vulnerability?



###SIDEBAR###