| Name | CVE-2023-6859 |
| Description | A use-after-free condition affected TLS socket creation when under memory pressure. This vulnerability affects Firefox ESR < 115.6, Thunderbird < 115.6, and Firefox < 121. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DLA-3697-1, DLA-3698-1, DSA-5581-1, DSA-5582-1 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| firefox (PTS) | sid | 128.0.2-1 | fixed |
| firefox-esr (PTS) | bullseye | 115.12.0esr-1~deb11u1 | fixed |
| bullseye (security) | 115.13.0esr-1~deb11u1 | fixed | |
| bookworm | 115.12.0esr-1~deb12u1 | fixed | |
| bookworm (security) | 115.13.0esr-1~deb12u1 | fixed | |
| trixie | 115.12.0esr-1 | fixed | |
| sid | 115.13.0esr-2 | fixed | |
| thunderbird (PTS) | bullseye | 1:115.12.0-1~deb11u1 | fixed |
| bullseye (security) | 1:115.13.0-1~deb11u1 | fixed | |
| bookworm | 1:115.12.0-1~deb12u1 | fixed | |
| bookworm (security) | 1:115.13.0-1~deb12u1 | fixed | |
| sid, trixie | 1:115.13.0-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| firefox | source | (unstable) | 121.0-1 | |||
| firefox-esr | source | buster | 115.6.0esr-1~deb10u1 | DLA-3697-1 | ||
| firefox-esr | source | bullseye | 115.6.0esr-1~deb11u1 | DSA-5581-1 | ||
| firefox-esr | source | bookworm | 115.6.0esr-1~deb12u1 | DSA-5581-1 | ||
| firefox-esr | source | (unstable) | 115.6.0esr-1 | |||
| thunderbird | source | buster | 1:115.6.0-1~deb10u1 | DLA-3698-1 | ||
| thunderbird | source | bullseye | 1:115.6.0-1~deb11u1 | DSA-5582-1 | ||
| thunderbird | source | bookworm | 1:115.6.0-1~deb12u1 | DSA-5582-1 | ||
| thunderbird | source | (unstable) | 1:115.6.0-1 |
https://www.mozilla.org/en-US/security/advisories/mfsa2023-56/#CVE-2023-6859
https://www.mozilla.org/en-US/security/advisories/mfsa2023-55/#CVE-2023-6859
https://www.mozilla.org/en-US/security/advisories/mfsa2023-54/#CVE-2023-6859