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CVE-2013-4122

4.3 · MEDIUM

Cyrus SASL 2.1.23, 2.1.26, and earlier does not properly handle when a NULL value is returned upon an error by the crypt function as implemented in glibc 2.17 and later, which allows remote attacke…

Published Oct 27, 2013cmuCWE-189EPSS 3.59%

Overview

CVE-2013-4122 is a medium-severity vulnerability affecting cmu cyrus-sasl. It was published on October 27, 2013 and has a CVSS 2.0 base score of 4.3 (MEDIUM).

This vulnerability has a CVSS 2.0 base score of 4.3, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

Cyrus SASL 2.1.23, 2.1.26, and earlier does not properly handle when a NULL value is returned upon an error by the crypt function as implemented in glibc 2.17 and later, which allows remote attackers to cause a denial of service (thread crash and consumption) via (1) an invalid salt or, when FIPS-140 is enabled, a (2) DES or (3) MD5 encrypted password, which triggers a NULL pointer dereference.

Remediation

Check the references section for vendor advisories and patches from cmu. Update cyrus-sasl to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected products

VendorProductVersionsStatus
cmucyrus-sasl0Affected

References

Refgit.cyrusimap.org/cyrus-sasl/commit/?id=dedad73e5e7a75d01a5f3d5a6702ab8ccd2ff40dRefsecurity.gentoo.org/glsa/glsa-201309-01.xmlRefwww.debian.org/security/2015/dsa-3368Refwww.openwall.com/lists/oss-security/2013/07/12/3Refwww.openwall.com/lists/oss-security/2013/07/12/6Refwww.openwall.com/lists/oss-security/2013/07/13/1Refwww.openwall.com/lists/oss-security/2013/07/15/1Refwww.ubuntu.com/usn/USN-2755-1Refwww.linuxquestions.org/questions/slackware-14/%5Bslackware-current%5D-glibc-2-17-shadow-and-other-penumbrae-4175461061/Refgit.cyrusimap.org/cyrus-sasl/commit/?id=dedad73e5e7a75d01a5f3d5a6702ab8ccd2ff40d

How CyberStrike helps

Frequently asked questions

What is CVE-2013-4122?

CVE-2013-4122 is a medium-severity vulnerability affecting cmu cyrus-sasl. It was published on October 27, 2013 and has a CVSS 2.0 base score of 4.3 (MEDIUM).

How severe is CVE-2013-4122?

This vulnerability has a CVSS 2.0 base score of 4.3, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2013-4122?

Check the references section for vendor advisories and patches from cmu. Update cyrus-sasl to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2013-4122?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2013-4122 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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