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CVE-2015-2743

7.5 · HIGH

PDF.js in Mozilla Firefox before 39.0 and Firefox ESR 31.x before 31.8 and 38.x before 38.1 enables excessive privileges for internal Workers, which might allow remote attackers to execute arbitrar…

Published Jul 6, 2015mozillaCWE-17EPSS 4.71%

Overview

CVE-2015-2743 is a high-severity vulnerability affecting mozilla firefox. It was published on July 6, 2015 and has a CVSS 2.0 base score of 7.5 (HIGH).

This vulnerability has a CVSS 2.0 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

PDF.js in Mozilla Firefox before 39.0 and Firefox ESR 31.x before 31.8 and 38.x before 38.1 enables excessive privileges for internal Workers, which might allow remote attackers to execute arbitrary code by leveraging a Same Origin Policy bypass.

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

Reflists.opensuse.org/opensuse-security-announce/2015-07/msg00025.htmlReflists.opensuse.org/opensuse-security-announce/2015-07/msg00031.htmlReflists.opensuse.org/opensuse-security-announce/2015-07/msg00033.htmlReflists.opensuse.org/opensuse-security-announce/2015-07/msg00034.htmlReflists.opensuse.org/opensuse-security-announce/2015-08/msg00021.htmlRefrhn.redhat.com/errata/RHSA-2015-1207.htmlRefwww.debian.org/security/2015/dsa-3300Refwww.mozilla.org/security/announce/2015/mfsa2015-69.htmlRefwww.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.htmlRefwww.oracle.com/technetwork/topics/security/bulletinoct2015-2511968.html

How CyberStrike helps

Frequently asked questions

What is CVE-2015-2743?

CVE-2015-2743 is a high-severity vulnerability affecting mozilla firefox. It was published on July 6, 2015 and has a CVSS 2.0 base score of 7.5 (HIGH).

How severe is CVE-2015-2743?

This vulnerability has a CVSS 2.0 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2015-2743?

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-2015-2743?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2015-2743 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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