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CVE-2023-4583

7.5 · HIGH

When checking if the Browsing Context had been discarded in `HttpBaseChannel`, if the load group was not available then it was assumed to have already been discarded which was not always the case f…

Published Sep 11, 2023CWE-754EPSS 0.69%

Overview

CVE-2023-4583 is a high-severity vulnerability. It was published on September 11, 2023 and has a CVSS 3.1 base score of 7.5 (HIGH).

This vulnerability has a CVSS 3.1 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

When checking if the Browsing Context had been discarded in `HttpBaseChannel`, if the load group was not available then it was assumed to have already been discarded which was not always the case for private channels after the private session had ended. This vulnerability affects Firefox < 117, Firefox ESR < 115.2, and Thunderbird < 115.2.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. 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.

References

Refbugzilla.mozilla.org/show_bug.cgi?id=1842030Refwww.mozilla.org/security/advisories/mfsa2023-34/Refwww.mozilla.org/security/advisories/mfsa2023-36/Refwww.mozilla.org/security/advisories/mfsa2023-38/Refbugzilla.mozilla.org/show_bug.cgi?id=1842030Refwww.mozilla.org/security/advisories/mfsa2023-34/Refwww.mozilla.org/security/advisories/mfsa2023-36/Refwww.mozilla.org/security/advisories/mfsa2023-38/

How CyberStrike helps

Frequently asked questions

What is CVE-2023-4583?

CVE-2023-4583 is a high-severity vulnerability. It was published on September 11, 2023 and has a CVSS 3.1 base score of 7.5 (HIGH).

How severe is CVE-2023-4583?

This vulnerability has a CVSS 3.1 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-2023-4583?

Check the references section for vendor advisories, patches, and mitigation guidance. 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-2023-4583?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2023-4583 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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