CVE-2023-6865

Description

`EncryptingOutputStream` was susceptible to exposing uninitialized data. This issue could only be abused in order to write data to a local disk which may have implications for private browsing mode. This vulnerability affects Firefox ESR < 115.6 and Firefox < 121.

6.5

CVSS

Severity: Medium

CVSS 3.1 •

EPSS 0.38%

Vendor Advisory mozilla.org Vendor Advisory mozilla.org

Affected: Mozilla Firefox ESR

Affected: Mozilla Firefox

References

Link	Tags
https://bugzilla.mozilla.org/show_bug.cgi?id=1864123	issue tracking permissions required
https://www.mozilla.org/security/advisories/mfsa2023-54/	vendor advisory
https://www.mozilla.org/security/advisories/mfsa2023-56/	vendor advisory
https://www.debian.org/security/2023/dsa-5581	third party advisory
https://lists.debian.org/debian-lts-announce/2023/12/msg00020.html	third party advisory mailing list
https://security.gentoo.org/glsa/202401-10	third party advisory

Frequently Asked Questions

What is the severity of CVE-2023-6865?: CVE-2023-6865 has been scored as a medium severity vulnerability.
How to fix CVE-2023-6865?: To fix CVE-2023-6865, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2023-6865 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2023-6865 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2023-6865?: CVE-2023-6865 affects Mozilla Firefox ESR, Mozilla Firefox.

This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.