CVE-2023-6208

Description

When using X11, text selected by the page using the Selection API was erroneously copied into the primary selection, a temporary storage not unlike the clipboard. *This bug only affects Firefox on X11. Other systems are unaffected.* This vulnerability affects Firefox < 120, Firefox ESR < 115.5.0, and Thunderbird < 115.5.

8.8

CVSS

Severity: High

CVSS 3.1 •

EPSS 0.48%

Vendor Advisory mozilla.org Vendor Advisory mozilla.org Vendor Advisory mozilla.org

Affected: Mozilla Firefox

Affected: Mozilla Firefox ESR

Affected: Mozilla Thunderbird

References

Link	Tags
https://bugzilla.mozilla.org/show_bug.cgi?id=1855345	issue tracking permissions required
https://www.mozilla.org/security/advisories/mfsa2023-49/	release notes vendor advisory
https://www.mozilla.org/security/advisories/mfsa2023-50/	release notes vendor advisory
https://www.mozilla.org/security/advisories/mfsa2023-52/	release notes vendor advisory
https://www.debian.org/security/2023/dsa-5561	third party advisory
https://lists.debian.org/debian-lts-announce/2023/11/msg00017.html	mailing list
https://lists.debian.org/debian-lts-announce/2023/11/msg00030.html

Frequently Asked Questions

What is the severity of CVE-2023-6208?: CVE-2023-6208 has been scored as a high severity vulnerability.
How to fix CVE-2023-6208?: To fix CVE-2023-6208, 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-2023-6208 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2023-6208 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-2023-6208?: CVE-2023-6208 affects Mozilla Firefox, Mozilla Firefox ESR, Mozilla Thunderbird.

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