| Name | CVE-2020-6806 |
| Description | By carefully crafting promise resolutions, it was possible to cause an out-of-bounds read off the end of an array resized during script execution. This could have led to memory corruption and a potentially exploitable crash. This vulnerability affects Thunderbird < 68.6, Firefox < 74, Firefox < ESR68.6, and Firefox ESR < 68.6. |
| 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-2140-1, DLA-2150-1, DSA-4639-1, DSA-4642-1 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| firefox (PTS) | sid | 132.0.2-1 | fixed |
| firefox-esr (PTS) | bullseye | 115.14.0esr-1~deb11u1 | fixed |
| bullseye (security) | 128.4.0esr-1~deb11u1 | fixed | |
| bookworm | 128.3.1esr-1~deb12u1 | fixed | |
| bookworm (security) | 128.4.0esr-1~deb12u1 | fixed | |
| sid, trixie | 128.4.0esr-1 | fixed | |
| thunderbird (PTS) | bullseye | 1:115.12.0-1~deb11u1 | fixed |
| bullseye (security) | 1:128.4.3esr-1~deb11u1 | fixed | |
| bookworm | 1:115.16.0esr-1~deb12u1 | fixed | |
| bookworm (security) | 1:128.4.3esr-1~deb12u1 | fixed | |
| sid, trixie | 1:128.4.3esr-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) | 74.0-1 | |||
| firefox-esr | source | jessie | 68.6.0esr-1~deb8u1 | DLA-2140-1 | ||
| firefox-esr | source | stretch | 68.6.0esr-1~deb9u1 | DSA-4639-1 | ||
| firefox-esr | source | buster | 68.6.0esr-1~deb10u1 | DSA-4639-1 | ||
| firefox-esr | source | (unstable) | 68.6.0esr-1 | |||
| thunderbird | source | jessie | 1:68.6.0-1~deb8u1 | DLA-2150-1 | ||
| thunderbird | source | stretch | 1:68.6.0-1~deb9u1 | DSA-4642-1 | ||
| thunderbird | source | buster | 1:68.6.0-1~deb10u1 | DSA-4642-1 | ||
| thunderbird | source | (unstable) | 1:68.6.0-1 |
https://www.mozilla.org/en-US/security/advisories/mfsa2020-10/#CVE-2020-6806
https://www.mozilla.org/en-US/security/advisories/mfsa2020-09/#CVE-2020-6806
https://www.mozilla.org/en-US/security/advisories/mfsa2020-08/#CVE-2020-6806