CVE catalog
CVE-2023-29542
firefox-esr: CVE-2023-29542
- Severity
- Critical · CVSS 9.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.94% · Oct 25, 2026
A newline in a filename could have been used to bypass the file extension security mechanisms that replace malicious file extensions such as .lnk with .download. This could have led to accidental execution of malicious code. *This bug only affects Firefox and Thunderbird on Windows. Other versions of Firefox and Thunderbird are unaffected.* This vulnerability affects Firefox < 112, Firefox ESR < 102.10, and Thunderbird < 102.10.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | firefox-esr | sid | 153.5.1esr-1 | not affected |
| Debian | firefox-esr | forky | 153.5.1esr-1 | not affected |
| Debian | firefox-esr | trixie | 140.15.0esr-1~deb13u1 | not affected |
| Debian | firefox-esr | trixie-security | 153.5.1esr-1~deb13u1 | not affected |
| Debian | firefox-esr | bookworm | 140.12.0esr-1~deb12u1 | not affected |
| Debian | firefox-esr | bookworm-security | 153.5.1esr-1~deb12u1 | not affected |
| Debian | thunderbird | sid | 1:153.5.1esr-1 | not affected |
| Debian | thunderbird | forky | 1:153.5.0esr-1 | not affected |
| Debian | thunderbird | trixie | 1:140.12.0esr-1~deb13u1 | not affected |
| Debian | thunderbird | trixie-security | 1:153.5.1esr-1~deb13u2 | not affected |
| Debian | thunderbird | bookworm | 1:140.12.0esr-1~deb12u1 | not affected |
| Debian | thunderbird | bookworm-security | 1:153.5.1esr-1~deb12u1 | not affected |
| Ubuntu | mozjs52 | 18.04 | 52.3.1-0ubuntu3 | vulnerable |
| Ubuntu | mozjs52 | 18.04 | 52.3.1-7fakesync1 | vulnerable |
| Ubuntu | mozjs52 | 18.04 | 52.8.1-0ubuntu0.18.04.1 | vulnerable |
| Ubuntu | mozjs52 | 18.04 | 52.9.1-0ubuntu0.18.04.1 | vulnerable |
| Ubuntu | mozjs38 | 18.04 | 38.8.0~repack1-0ubuntu1 | vulnerable |
| Ubuntu | mozjs38 | 18.04 | 38.8.0~repack1-0ubuntu3 | vulnerable |
| Ubuntu | mozjs38 | 18.04 | 38.8.0~repack1-0ubuntu4 | vulnerable |
| Ubuntu | mozjs68 | 20.04 | 68.5.0-1~fakesync | vulnerable |
| Ubuntu | mozjs68 | 20.04 | 68.5.0-2~fakesync | vulnerable |
| Ubuntu | mozjs68 | 20.04 | 68.6.0-1 | vulnerable |
| Ubuntu | mozjs68 | 20.04 | 68.6.0-1ubuntu1 | vulnerable |
| Ubuntu | mozjs52 | 20.04 | 52.9.1-1build1 | vulnerable |
| Ubuntu | mozjs52 | 20.04 | 52.9.1-1ubuntu3 | vulnerable |
| Ubuntu | mozjs78 | 22.04 | 78.13.0-1 | vulnerable |
| Ubuntu | mozjs78 | 22.04 | 78.15.0-2 | vulnerable |
| Ubuntu | mozjs78 | 22.04 | 78.15.0-4ubuntu1 | vulnerable |
| Ubuntu | mozjs91 | 22.04 | 91.5.1-0ubuntu1 | vulnerable |
| Ubuntu | mozjs91 | 22.04 | 91.6.0-1 | vulnerable |
| Ubuntu | mozjs91 | 22.04 | 91.6.0-2 | vulnerable |
| Ubuntu | mozjs91 | 22.04 | 91.7.0-2 | vulnerable |
| Ubuntu | mozjs91 | 22.04 | 91.10.0-0ubuntu1 | vulnerable |
| Cpe | firefox | Not reported | 112.0 | fixed |
| Cpe | firefox_esr | Not reported | 102.10 | fixed |
| Cpe | thunderbird | Not reported | 102.10 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | firefox-esr | source | sid | Not affected | unimportant | Not reported | Not reported |
| Debian | firefox-esr | source | forky | Not affected | unimportant | Not reported | Not reported |
| Debian | firefox-esr | source | trixie | Not affected | unimportant | Not reported | Not reported |
| Debian | firefox-esr | source | bookworm | Not affected | unimportant | Not reported | Not reported |
| Debian | thunderbird | source | sid | Not affected | unimportant | Not reported | Not reported |
| Debian | thunderbird | source | forky | Not affected | unimportant | Not reported | Not reported |
| Debian | thunderbird | source | trixie | Not affected | unimportant | Not reported | Not reported |
| Debian | thunderbird | source | bookworm | Not affected | unimportant | Not reported | Not reported |
| Cpe | firefox | cpe | Not reported | 112.0 | Not reported | NVD-CVE-2023-29542 | Not reported |
| Cpe | firefox_esr | cpe | Not reported | 102.10 | Not reported | NVD-CVE-2023-29542 | Not reported |
| Cpe | thunderbird | cpe | Not reported | 102.10 | Not reported | NVD-CVE-2023-29542 | Not reported |
OpenFactory catalog packages
Matching against OpenFactory catalog package versions is in progress.
References
- [https://bugzilla.mozilla.org/show_bug.cgi?id=1810793]
- [https://bugzilla.mozilla.org/show_bug.cgi?id=1815062]
- [https://ftp.suse.com/pub/projects/security/csaf/suse-su-2023_1817-1.json]
- [https://nvd.nist.gov/vuln/detail/CVE-2023-29542]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2023-29542]
- [https://security-tracker.debian.org/tracker/CVE-2023-29542]
- [https://wid.cert-bund.de/.well-known/csaf/white/2023/wid-sec-w-2023-2031.json]
- [https://www.mozilla.org/security/advisories/mfsa2023-13/]
- [https://www.mozilla.org/security/advisories/mfsa2023-14/]
- [https://www.mozilla.org/security/advisories/mfsa2023-15/]
[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [SUSE security advisories and VEX]