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CVE-2014-1558

4.3 · MEDIUM

Mozilla Firefox before 31.0 and Thunderbird before 31.0 allow remote attackers to cause a denial of service (X.509 certificate parsing outage) via a crafted certificate that does not use UTF-8 char…

Published Jul 23, 2014mozillaEPSS 1.17%

Overview

CVE-2014-1558 is a medium-severity vulnerability affecting mozilla firefox. It was published on July 23, 2014 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

Mozilla Firefox before 31.0 and Thunderbird before 31.0 allow remote attackers to cause a denial of service (X.509 certificate parsing outage) via a crafted certificate that does not use UTF-8 character encoding in a required context, a different vulnerability than CVE-2014-1559.

Remediation

Check the references section for vendor advisories and patches from mozilla. Update firefox 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
mozillafirefox0Affected
mozillathunderbird0Affected

References

Refsecunia.com/advisories/60628Refwww.mozilla.org/security/announce/2014/mfsa2014-65.htmlRefwww.securitytracker.com/id/1030619Refwww.securitytracker.com/id/1030620Refbugzilla.mozilla.org/show_bug.cgi?id=1015973Refsecurity.gentoo.org/glsa/201504-01Refsecunia.com/advisories/60628Refwww.mozilla.org/security/announce/2014/mfsa2014-65.htmlRefwww.securitytracker.com/id/1030619Refwww.securitytracker.com/id/1030620

How CyberStrike helps

Frequently asked questions

What is CVE-2014-1558?

CVE-2014-1558 is a medium-severity vulnerability affecting mozilla firefox. It was published on July 23, 2014 and has a CVSS 2.0 base score of 4.3 (MEDIUM).

How severe is CVE-2014-1558?

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-2014-1558?

Check the references section for vendor advisories and patches from mozilla. Update firefox 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-2014-1558?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2014-1558 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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