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CVE-2005-0255

5.0 · MEDIUM

String handling functions in Mozilla 1.7.3, Firefox 1.0, and Thunderbird before 1.0.2, such as the nsTSubstring_CharT::Replace function, do not properly check the return values of other functions t…

Published May 2, 2005mozillaEPSS 4.29%

Overview

CVE-2005-0255 is a medium-severity vulnerability affecting mozilla firefox. It was published on May 2, 2005 and has a CVSS 2.0 base score of 5.0 (MEDIUM).

This vulnerability has a CVSS 2.0 base score of 5.0, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

String handling functions in Mozilla 1.7.3, Firefox 1.0, and Thunderbird before 1.0.2, such as the nsTSubstring_CharT::Replace function, do not properly check the return values of other functions that resize the string, which allows remote attackers to cause a denial of service and possibly execute arbitrary code by forcing an out-of-memory state that causes a reallocation to fail and return a pointer to a fixed address, which leads to heap corruption.

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

References

Refsecunia.com/advisories/19823Refwww.gentoo.org/security/en/glsa/glsa-200503-10.xmlRefwww.gentoo.org/security/en/glsa/glsa-200503-30.xmlRefwww.idefense.com/application/poi/display?id=200&type=vulnerabilitiesRefwww.mozilla.org/security/announce/mfsa2005-18.htmlRefwww.novell.com/linux/security/advisories/2005_16_mozilla_firefox.htmlRefwww.novell.com/linux/security/advisories/2006_04_25.htmlRefwww.redhat.com/support/errata/RHSA-2005-176.htmlRefwww.redhat.com/support/errata/RHSA-2005-277.htmlRefwww.redhat.com/support/errata/RHSA-2005-337.html

How CyberStrike helps

Frequently asked questions

What is CVE-2005-0255?

CVE-2005-0255 is a medium-severity vulnerability affecting mozilla firefox. It was published on May 2, 2005 and has a CVSS 2.0 base score of 5.0 (MEDIUM).

How severe is CVE-2005-0255?

This vulnerability has a CVSS 2.0 base score of 5.0, 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-2005-0255?

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-2005-0255?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2005-0255 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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