| Name | CVE-2020-12406 |
| Description | Mozilla Developer Iain Ireland discovered a missing type check during unboxed objects removal, resulting in a crash. We presume that with enough effort that it could be exploited to run arbitrary code. This vulnerability affects Thunderbird < 68.9.0, Firefox < 77, and Firefox ESR < 68.9. |
| 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-2243-1, DLA-2247-1, DSA-4695-1, DSA-4702-1 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| firefox (PTS) | sid | 125.0.1-2 | fixed |
| firefox-esr (PTS) | jessie, jessie (lts) | 68.9.0esr-1~deb8u2 | fixed |
| stretch (security), stretch (lts), stretch | 91.11.0esr-1~deb9u1 | fixed | |
| buster | 91.12.0esr-1~deb10u1 | fixed | |
| buster (security) | 115.9.1esr-1~deb10u1 | fixed | |
| bullseye | 115.7.0esr-1~deb11u1 | fixed | |
| bullseye (security) | 115.10.0esr-1~deb11u1 | fixed | |
| bookworm | 115.7.0esr-1~deb12u1 | fixed | |
| bookworm (security) | 115.10.0esr-1~deb12u1 | fixed | |
| trixie | 115.8.0esr-1 | fixed | |
| sid | 115.10.0esr-1 | fixed | |
| thunderbird (PTS) | jessie, jessie (lts) | 1:68.9.0-1~deb8u2 | fixed |
| stretch (security), stretch (lts), stretch | 1:91.10.0-1~deb9u1 | fixed | |
| buster | 1:91.12.0-1~deb10u1 | fixed | |
| buster (security) | 1:115.9.0-1~deb10u1 | fixed | |
| bullseye | 1:115.7.0-1~deb11u1 | fixed | |
| bullseye (security) | 1:115.9.0-1~deb11u1 | fixed | |
| bookworm | 1:115.7.0-1~deb12u1 | fixed | |
| bookworm (security) | 1:115.9.0-1~deb12u1 | fixed | |
| sid | 1:115.9.0-1 | 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) | 77.0-1 | |||
| firefox-esr | source | wheezy | (unfixed) | end-of-life | ||
| firefox-esr | source | jessie | 68.9.0esr-1~deb8u2 | DLA-2243-1 | ||
| firefox-esr | source | stretch | 68.9.0esr-1~deb9u1 | DSA-4695-1 | ||
| firefox-esr | source | buster | 68.9.0esr-1~deb10u1 | DSA-4695-1 | ||
| firefox-esr | source | (unstable) | 68.9.0esr-1 | |||
| thunderbird | source | wheezy | (unfixed) | end-of-life | ||
| thunderbird | source | jessie | 1:68.9.0-1~deb8u2 | DLA-2247-1 | ||
| thunderbird | source | stretch | 1:68.9.0-1~deb9u1 | DSA-4702-1 | ||
| thunderbird | source | buster | 1:68.9.0-1~deb10u1 | DSA-4702-1 | ||
| thunderbird | source | (unstable) | 1:68.9.0-1 |
https://www.mozilla.org/en-US/security/advisories/mfsa2020-20/#CVE-2020-12406
https://www.mozilla.org/en-US/security/advisories/mfsa2020-21/#CVE-2020-12406
https://www.mozilla.org/en-US/security/advisories/mfsa2020-22/#CVE-2020-12406