CVE-2023-6208
First published: Tue Nov 21 2023(Updated: )
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.
Credit: security@mozilla.org security@mozilla.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/firefox | <115.5 | 115.5 |
| redhat/thunderbird | <115.5 | 115.5 |
| ubuntu/firefox | <120.0+ | 120.0+ |
| ubuntu/thunderbird | <1:115.5.0+ | 1:115.5.0+ |
| ubuntu/thunderbird | <1:115.5.0+ | 1:115.5.0+ |
| ubuntu/thunderbird | <1:115.5.0+ | 1:115.5.0+ |
| ubuntu/thunderbird | <1:115.5.0+ | 1:115.5.0+ |
| Mozilla Thunderbird | <115.5 | 115.5 |
| Mozilla Firefox ESR | <115.5 | 115.5 |
| Mozilla Firefox | <120.0 | |
| Mozilla Firefox ESR | <115.5.0 | |
| Mozilla Thunderbird | <115.5 | |
| Debian Debian Linux | =10.0 | |
| Debian Debian Linux | =11.0 | |
| Debian Debian Linux | =12.0 | |
| debian/firefox | 123.0-1 | |
| debian/firefox-esr | <=91.12.0esr-1~deb10u1 | 115.8.0esr-1~deb10u1 115.7.0esr-1~deb11u1 115.8.0esr-1~deb11u1 115.7.0esr-1~deb12u1 115.8.0esr-1~deb12u1 115.8.0esr-1 |
| debian/thunderbird | <=1:91.12.0-1~deb10u1 | 1:115.8.0-1~deb10u1 1:115.7.0-1~deb11u1 1:115.8.0-1~deb11u1 1:115.7.0-1~deb12u1 1:115.8.0-1~deb12u1 1:115.7.0-1 1:115.8.1-1 |
| Mozilla Firefox | <120 | 120 |
| Debian | =10.0 | |
| Debian | =11.0 | |
| Debian | =12.0 |
Never miss a vulnerability like this again
Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.
Reference Links
- https://bugzilla.mozilla.org/show_bug.cgi?id=1855345
- https://www.mozilla.org/security/advisories/mfsa2023-49/
- https://www.mozilla.org/security/advisories/mfsa2023-50/
- https://www.mozilla.org/security/advisories/mfsa2023-52/
- https://www.debian.org/security/2023/dsa-5561
- https://lists.debian.org/debian-lts-announce/2023/11/msg00017.html
- https://lists.debian.org/debian-lts-announce/2023/11/msg00030.html
- https://launchpad.net/bugs/cve/CVE-2023-6208
- https://www.mozilla.org/en-US/security/advisories/mfsa2023-49/
- https://www.mozilla.org/en-US/security/advisories/mfsa2023-50/
- https://www.mozilla.org/en-US/security/advisories/mfsa2023-52/
- https://www.mozilla.org/en-US/security/advisories/mfsa2023-50/#CVE-2023-6208
- https://access.redhat.com/errata/RHSA-2023:7499
- https://access.redhat.com/errata/RHSA-2023:7502
- https://access.redhat.com/errata/RHSA-2023:7500
- https://access.redhat.com/errata/RHSA-2023:7501
- https://access.redhat.com/errata/RHSA-2023:7504
- https://access.redhat.com/errata/RHSA-2023:7503
- https://access.redhat.com/errata/RHSA-2023:7506
- https://access.redhat.com/errata/RHSA-2023:7510
- https://access.redhat.com/errata/RHSA-2023:7507
- https://access.redhat.com/errata/RHSA-2023:7511
- https://access.redhat.com/errata/RHSA-2023:7508
- https://access.redhat.com/errata/RHSA-2023:7505
- https://access.redhat.com/errata/RHSA-2023:7509
- https://access.redhat.com/errata/RHSA-2023:7512
- https://access.redhat.com/errata/RHSA-2023:7547
- https://access.redhat.com/errata/RHSA-2023:7569
- https://access.redhat.com/errata/RHSA-2023:7570
- https://access.redhat.com/errata/RHSA-2023:7573
- https://access.redhat.com/errata/RHSA-2023:7574
- https://access.redhat.com/errata/RHSA-2023:7577
- https://bugzilla.redhat.com/show_bug.cgi?id=2250900
- https://www.mozilla.org/en-US/security/advisories/mfsa2023-49/#CVE-2023-6208
- https://www.mozilla.org/en-US/security/advisories/mfsa2023-52/#CVE-2023-6208
- https://security-tracker.debian.org/tracker/CVE-2023-6208
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-6208
- https://ubuntu.com/security/notices/USN-6509-1
- https://ubuntu.com/security/notices/USN-6515-1
- https://nvd.nist.gov/vuln/detail/CVE-2023-6208
- https://ubuntu.com/security/CVE-2023-6208
Parent vulnerabilities
(Appears in the following advisories)
Peer vulnerabilities
(Found alongside the following vulnerabilities)
Frequently Asked Questions
What is the vulnerability ID for this issue?
The vulnerability ID is CVE-2023-6208.
Which systems are affected by this vulnerability?
This vulnerability affects Thunderbird on X11 and Firefox versions below 120 and below 115.5.
What is the severity rating of CVE-2023-6208?
The severity rating of CVE-2023-6208 is medium with a value of 4.
How does this vulnerability occur?
When using X11, text selected by the page using the Selection API is erroneously copied into the primary selection.
How can I fix this vulnerability?
To fix this vulnerability, update Thunderbird to version 115.5 or higher and update Firefox to version 120 or higher.
- agent/type
- agent/first-publish-date
- collector/launchpad-cve
- source/Launchpad
- agent/author
- agent/references
- agent/severity
- collector/redhat-bugzilla
- source/Red Hat
- alias/CVE-2023-6208
- agent/software-canonical-lookup
- collector/usn-cve
- source/Ubuntu
- collector/mozilla-advisory
- source/Mozilla
- agent/description
- collector/epss-latest
- source/FIRST
- agent/epss
- agent/software-canonical-lookup-request
- collector/nvd-api
- collector/security-tracker-debian
- source/Debian
- agent/softwarecombine
- collector/mitre-cve
- source/MITRE
- agent/last-modified-date
- agent/event
- agent/trending
- agent/source
- agent/tags
- collector/nvd-cve
- source/NVD
- package-manager/redhat
- package-manager/ubuntu
- vendor/mozilla
- canonical/mozilla thunderbird
- canonical/mozilla firefox esr
- canonical/mozilla firefox
- vendor/debian
- canonical/debian debian linux
- version/debian debian linux/10.0
- version/debian debian linux/11.0
- version/debian debian linux/12.0
- package-manager/debian
- canonical/debian
- version/debian/10.0
- version/debian/11.0
- version/debian/12.0