CVE-2023-4049
Mozilla Firefox ESR and 3 others: Race conditions in reference counting code were found through code inspection.
CVE-2023-4049 is fixed in 113 products on 2 platforms, first by firefox 116.0+build2-0ubuntu0.20.04.2, released July 31, 2023. It is not reported as exploited. Patch Radar priority: High.
HighFixed on 2 platforms
CVSS
7.5
Important
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0063
50th percentile
Race conditions in reference counting code were found through code inspection. These could have resulted in potentially exploitable use-after-free vulnerabilities. This vulnerability affects Firefox < 116, Firefox ESR < 102.14, and Firefox ESR < 115.1.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Windows apps | |||
| Mozilla Firefox (en-US) | 116.0 | Mozilla Firefox (en-US) 116.0 | Aug 2, 2023 |
| Mozilla Firefox ESR (ach) | 128.3.0 | Mozilla Firefox ESR (ach) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (af) | 128.3.0 | Mozilla Firefox ESR (af) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (an) | 128.3.0 | Mozilla Firefox ESR (an) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (ar) | 128.3.0 | Mozilla Firefox ESR (ar) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (ast) | 128.3.0 | Mozilla Firefox ESR (ast) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (az) | 128.3.0 | Mozilla Firefox ESR (az) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (be) | 128.3.0 | Mozilla Firefox ESR (be) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (bg) | 128.3.0 | Mozilla Firefox ESR (bg) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (bn) | 128.3.0 | Mozilla Firefox ESR (bn) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (br) | 128.3.0 | Mozilla Firefox ESR (br) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (bs) | 128.3.0 | Mozilla Firefox ESR (bs) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (ca) | 128.3.0 | Mozilla Firefox ESR (ca) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (ca-valencia) | 128.3.0 | Mozilla Firefox ESR (ca-valencia) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (cak) | 128.3.0 | Mozilla Firefox ESR (cak) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (cs) | 128.3.0 | Mozilla Firefox ESR (cs) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (cy) | 128.3.0 | Mozilla Firefox ESR (cy) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (da) | 128.3.0 | Mozilla Firefox ESR (da) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (de) | 128.3.0 | Mozilla Firefox ESR (de) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (dsb) | 128.3.0 | Mozilla Firefox ESR (dsb) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (el) | 128.3.0 | Mozilla Firefox ESR (el) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (en-CA) | 128.3.0 | Mozilla Firefox ESR (en-CA) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (en-GB) | 128.3.0 | Mozilla Firefox ESR (en-GB) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (en-US) | 128.3.0 | Mozilla Firefox ESR (en-US) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (eo) | 128.3.0 | Mozilla Firefox ESR (eo) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (es-AR) | 128.3.0 | Mozilla Firefox ESR (es-AR) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (es-CL) | 128.3.0 | Mozilla Firefox ESR (es-CL) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (es-ES) | 128.3.0 | Mozilla Firefox ESR (es-ES) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (es-MX) | 128.3.0 | Mozilla Firefox ESR (es-MX) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (et) | 128.3.0 | Mozilla Firefox ESR (et) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (eu) | 128.3.0 | Mozilla Firefox ESR (eu) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (fa) | 128.3.0 | Mozilla Firefox ESR (fa) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (ff) | 128.3.0 | Mozilla Firefox ESR (ff) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (fi) | 128.3.0 | Mozilla Firefox ESR (fi) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (fr) | 128.3.0 | Mozilla Firefox ESR (fr) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (fur) | 128.3.0 | Mozilla Firefox ESR (fur) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (fy-NL) | 128.3.0 | Mozilla Firefox ESR (fy-NL) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (ga-IE) | 128.3.0 | Mozilla Firefox ESR (ga-IE) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (gd) | 128.3.0 | Mozilla Firefox ESR (gd) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (gl) | 128.3.0 | Mozilla Firefox ESR (gl) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (gn) | 128.3.0 | Mozilla Firefox ESR (gn) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (gu-IN) | 128.3.0 | Mozilla Firefox ESR (gu-IN) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (he) | 128.3.0 | Mozilla Firefox ESR (he) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (hi-IN) | 128.3.0 | Mozilla Firefox ESR (hi-IN) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (hr) | 128.3.0 | Mozilla Firefox ESR (hr) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (hsb) | 128.3.0 | Mozilla Firefox ESR (hsb) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (hu) | 128.3.0 | Mozilla Firefox ESR (hu) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (hy-AM) | 128.3.0 | Mozilla Firefox ESR (hy-AM) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (ia) | 128.3.0 | Mozilla Firefox ESR (ia) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (id) | 128.3.0 | Mozilla Firefox ESR (id) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (is) | 128.3.0 | Mozilla Firefox ESR (is) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (it) | 128.3.0 | Mozilla Firefox ESR (it) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (ja) | 128.3.0 | Mozilla Firefox ESR (ja) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (ka) | 128.3.0 | Mozilla Firefox ESR (ka) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (kab) | 128.3.0 | Mozilla Firefox ESR (kab) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (kk) | 128.3.0 | Mozilla Firefox ESR (kk) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (km) | 128.3.0 | Mozilla Firefox ESR (km) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (kn) | 128.3.0 | Mozilla Firefox ESR (kn) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (ko) | 128.3.0 | Mozilla Firefox ESR (ko) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (lij) | 128.3.0 | Mozilla Firefox ESR (lij) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (lt) | 128.3.0 | Mozilla Firefox ESR (lt) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (lv) | 128.3.0 | Mozilla Firefox ESR (lv) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (mk) | 128.3.0 | Mozilla Firefox ESR (mk) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (mr) | 128.3.0 | Mozilla Firefox ESR (mr) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (ms) | 128.3.0 | Mozilla Firefox ESR (ms) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (my) | 128.3.0 | Mozilla Firefox ESR (my) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (nb-NO) | 128.3.0 | Mozilla Firefox ESR (nb-NO) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (ne-NP) | 128.3.0 | Mozilla Firefox ESR (ne-NP) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (nl) | 128.3.0 | Mozilla Firefox ESR (nl) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (nn-NO) | 128.3.0 | Mozilla Firefox ESR (nn-NO) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (oc) | 128.3.0 | Mozilla Firefox ESR (oc) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (pa-IN) | 128.3.0 | Mozilla Firefox ESR (pa-IN) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (pl) | 128.3.0 | Mozilla Firefox ESR (pl) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (pt-BR) | 128.3.0 | Mozilla Firefox ESR (pt-BR) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (pt-PT) | 128.3.0 | Mozilla Firefox ESR (pt-PT) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (rm) | 128.3.0 | Mozilla Firefox ESR (rm) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (ro) | 128.3.0 | Mozilla Firefox ESR (ro) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (ru) | 128.3.0 | Mozilla Firefox ESR (ru) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (sc) | 128.3.0 | Mozilla Firefox ESR (sc) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (sco) | 128.3.0 | Mozilla Firefox ESR (sco) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (si) | 128.3.0 | Mozilla Firefox ESR (si) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (sk) | 128.3.0 | Mozilla Firefox ESR (sk) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (sl) | 128.3.0 | Mozilla Firefox ESR (sl) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (son) | 128.3.0 | Mozilla Firefox ESR (son) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (sq) | 128.3.0 | Mozilla Firefox ESR (sq) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (sr) | 128.3.0 | Mozilla Firefox ESR (sr) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (sv-SE) | 128.3.0 | Mozilla Firefox ESR (sv-SE) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (szl) | 128.3.0 | Mozilla Firefox ESR (szl) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (ta) | 128.3.0 | Mozilla Firefox ESR (ta) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (te) | 128.3.0 | Mozilla Firefox ESR (te) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (tg) | 128.3.0 | Mozilla Firefox ESR (tg) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (th) | 128.3.0 | Mozilla Firefox ESR (th) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (tl) | 128.3.0 | Mozilla Firefox ESR (tl) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (tr) | 128.3.0 | Mozilla Firefox ESR (tr) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (trs) | 128.3.0 | Mozilla Firefox ESR (trs) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (uk) | 128.3.0 | Mozilla Firefox ESR (uk) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (ur) | 128.3.0 | Mozilla Firefox ESR (ur) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (uz) | 128.3.0 | Mozilla Firefox ESR (uz) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (vi) | 128.3.0 | Mozilla Firefox ESR (vi) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (xh) | 128.3.0 | Mozilla Firefox ESR (xh) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (zh-CN) | 128.3.0 | Mozilla Firefox ESR (zh-CN) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (zh-TW) | 128.3.0 | Mozilla Firefox ESR (zh-TW) 128.3.0 | Oct 1, 2024 |
| Linux | |||
| firefox · RHEL 8 | 0:102.14.0-1.el8_8 | RHSA-2023:4468 | Aug 3, 2023 |
| firefox · RHEL 9 | 0:102.14.0-1.el9_2 | RHSA-2023:4462 | Aug 3, 2023 |
| firefox · Ubuntu 20.04 LTS (focal) | 116.0+build2-0ubuntu0.20.04.2 | firefox 116.0+build2-0ubuntu0.20.04.2 | Jul 31, 2023 |
| firefox · almalinux 8 | 102.14.0-1.el8_8.alma | ALSA-2023:4468 | Aug 3, 2023 |
| firefox · almalinux 9 | 102.14.0-1.el9_2.alma | ALSA-2023:4462 | Aug 3, 2023 |
| firefox · ol 8 | 0:102.14.0-1.0.1.el8_8 | ELSA-2023-4468 | Aug 4, 2023 |
| firefox · ol 9 | 0:102.14.0-1.0.1.el9_2 | ELSA-2023-4462 | Aug 4, 2023 |
| firefox · rocky 8 | 0:102.14.0-1.el8_8 | RLSA-2023:4468 | Aug 8, 2023 |
| firefox · rocky 9 | 0:102.14.0-1.el9_2 | RLSA-2023:4462 | Aug 8, 2023 |
| firefox-esr · Debian 12.15 (bookworm) | 102.14.0esr-1~deb12u1 | DEBIAN-CVE-2023-4049 | Aug 1, 2023 |
| firefox-esr · Debian 13.5 (trixie) | 115.1.0esr-1 | DEBIAN-CVE-2023-4049 | Aug 1, 2023 |
| firefox-esr · Debian 14 | 115.1.0esr-1 | DEBIAN-CVE-2023-4049 | Aug 1, 2023 |
| firefox-geckodriver · Ubuntu 20.04 LTS (focal) | 116.0+build2-0ubuntu0.20.04.2 | firefox-geckodriver 116.0+build2-0ubuntu0.20.04.2 | Jul 31, 2023 |
| firefox-mozsymbols · Ubuntu 20.04 LTS (focal) | 116.0+build2-0ubuntu0.20.04.2 | firefox-mozsymbols 116.0+build2-0ubuntu0.20.04.2 | Jul 31, 2023 |
| firefox-x11 · RHEL 9 | 0:102.14.0-1.el9_2 | RHSA-2023:4462 | Aug 3, 2023 |
| firefox-x11 · almalinux 9 | 102.14.0-1.el9_2.alma | ALSA-2023:4462 | Aug 3, 2023 |
| firefox-x11 · ol 9 | 0:102.14.0-1.0.1.el9_2 | ELSA-2023-4462 | Aug 4, 2023 |
| thunderbird · Debian 12.15 (bookworm) | 1:102.14.0-1~deb12u1 | DEBIAN-CVE-2023-4049 | Aug 1, 2023 |
| thunderbird · Debian 13.5 (trixie) | 1:115.1.0-1 | DEBIAN-CVE-2023-4049 | Aug 1, 2023 |
| thunderbird · Debian 14 | 1:115.1.0-1 | DEBIAN-CVE-2023-4049 | Aug 1, 2023 |
| thunderbird · RHEL 8 | 0:102.14.0-1.el8_8 | RHSA-2023:4497 | Aug 7, 2023 |
| thunderbird · RHEL 9 | 0:102.14.0-1.el9_2 | RHSA-2023:4499 | Aug 7, 2023 |
| thunderbird · Ubuntu 20.04 LTS (focal) | 1:102.15.0+build1-0ubuntu0.20.04.1 | thunderbird 1:102.15.0+build1-0ubuntu0.20.04.1 | Aug 1, 2023 |
| thunderbird · Ubuntu 22.04.1 LTS (jammy) | 1:102.15.0+build1-0ubuntu0.22.04.1 | thunderbird 1:102.15.0+build1-0ubuntu0.22.04.1 | Aug 1, 2023 |
| thunderbird · almalinux 8 | 102.14.0-1.el8_8.alma | ALSA-2023:4497 | Aug 7, 2023 |
| thunderbird · almalinux 9 | 102.14.0-1.el9_2.alma | ALSA-2023:4499 | Aug 7, 2023 |
| thunderbird · ol 8 | 0:102.14.0-1.0.1.el8_8 | ELSA-2023-4497 | Aug 9, 2023 |
| thunderbird · ol 9 | 0:102.14.0-1.0.1.el9_2 | ELSA-2023-4499 | Aug 8, 2023 |
| thunderbird · rocky 8 | 0:102.14.0-1.el8_8 | RLSA-2023:4497 | Aug 8, 2023 |
| thunderbird · rocky 9 | 0:102.14.0-1.el9_2 | RLSA-2023:4499 | Aug 8, 2023 |
| thunderbird-gnome-support · Ubuntu 20.04 LTS (focal) | 1:102.15.0+build1-0ubuntu0.20.04.1 | thunderbird-gnome-support 1:102.15.0+build1-0ubuntu0.20.04.1 | Aug 1, 2023 |
| thunderbird-gnome-support · Ubuntu 22.04.1 LTS (jammy) | 1:102.15.0+build1-0ubuntu0.22.04.1 | thunderbird-gnome-support 1:102.15.0+build1-0ubuntu0.22.04.1 | Aug 1, 2023 |
| thunderbird-mozsymbols · Ubuntu 20.04 LTS (focal) | 1:102.15.0+build1-0ubuntu0.20.04.1 | thunderbird-mozsymbols 1:102.15.0+build1-0ubuntu0.20.04.1 | Aug 1, 2023 |
| thunderbird-mozsymbols · Ubuntu 22.04.1 LTS (jammy) | 1:102.15.0+build1-0ubuntu0.22.04.1 | thunderbird-mozsymbols 1:102.15.0+build1-0ubuntu0.22.04.1 | Aug 1, 2023 |
| xul-ext-calendar-timezones · Ubuntu 20.04 LTS (focal) | 1:102.15.0+build1-0ubuntu0.20.04.1 | xul-ext-calendar-timezones 1:102.15.0+build1-0ubuntu0.20.04.1 | Aug 1, 2023 |
| xul-ext-calendar-timezones · Ubuntu 22.04.1 LTS (jammy) | 1:102.15.0+build1-0ubuntu0.22.04.1 | xul-ext-calendar-timezones 1:102.15.0+build1-0ubuntu0.22.04.1 | Aug 1, 2023 |
| xul-ext-gdata-provider · Ubuntu 20.04 LTS (focal) | 1:102.15.0+build1-0ubuntu0.20.04.1 | xul-ext-gdata-provider 1:102.15.0+build1-0ubuntu0.20.04.1 | Aug 1, 2023 |
| xul-ext-gdata-provider · Ubuntu 22.04.1 LTS (jammy) | 1:102.15.0+build1-0ubuntu0.22.04.1 | xul-ext-gdata-provider 1:102.15.0+build1-0ubuntu0.22.04.1 | Aug 1, 2023 |
| xul-ext-lightning · Ubuntu 20.04 LTS (focal) | 1:102.15.0+build1-0ubuntu0.20.04.1 | xul-ext-lightning 1:102.15.0+build1-0ubuntu0.20.04.1 | Aug 1, 2023 |
| xul-ext-lightning · Ubuntu 22.04.1 LTS (jammy) | 1:102.15.0+build1-0ubuntu0.22.04.1 | xul-ext-lightning 1:102.15.0+build1-0ubuntu0.22.04.1 | Aug 1, 2023 |
Patch Radar data is free to use with attribution. Terms and how to credit it.
Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.