| Name | CVE-2020-6831 |
| Description | A buffer overflow could occur when parsing and validating SCTP chunks in WebRTC. This could have led to memory corruption and a potentially exploitable crash. This vulnerability affects Firefox ESR < 68.8, Firefox < 76, and Thunderbird < 68.8.0. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more) |
| References | DLA-2205-1, DLA-2206-1, DSA-4678-1, DSA-4683-1, DSA-4714-1 |
| NVD severity | high |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| chromium (PTS) | stretch, stretch (security) | 73.0.3683.75-1~deb9u1 | vulnerable |
| buster, buster (security) | 83.0.4103.116-1~deb10u3 | fixed | |
| bullseye, sid | 83.0.4103.116-3.1 | fixed | |
| firefox (PTS) | sid | 81.0-2 | fixed |
| firefox-esr (PTS) | stretch | 68.10.0esr-1~deb9u1 | fixed |
| stretch (security) | 68.12.0esr-1~deb9u1 | fixed | |
| buster | 68.10.0esr-1~deb10u1 | fixed | |
| buster (security) | 68.12.0esr-1~deb10u1 | fixed | |
| bullseye | 68.11.0esr-1 | fixed | |
| sid | 78.3.0esr-2 | fixed | |
| thunderbird (PTS) | stretch | 1:68.10.0-1~deb9u1 | fixed |
| stretch (security) | 1:68.12.0-1~deb9u2 | fixed | |
| buster | 1:68.10.0-1~deb10u1 | fixed | |
| buster (security) | 1:68.12.0-1~deb10u1 | fixed | |
| bullseye, sid | 1:68.12.0-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| chromium | source | stretch | (unfixed) | end-of-life | ||
| chromium | source | buster | 83.0.4103.116-1~deb10u1 | DSA-4714-1 | ||
| chromium | source | (unstable) | 83.0.4103.83-1 | |||
| firefox | source | (unstable) | 76.0-1 | |||
| firefox-esr | source | jessie | 68.8.0esr-1~deb8u1 | DLA-2205-1 | ||
| firefox-esr | source | stretch | 68.8.0esr-1~deb9u1 | DSA-4678-1 | ||
| firefox-esr | source | buster | 68.8.0esr-1~deb10u1 | DSA-4678-1 | ||
| firefox-esr | source | (unstable) | 68.8.0esr-1 | |||
| thunderbird | source | jessie | 1:68.8.0-1~deb8u1 | DLA-2206-1 | ||
| thunderbird | source | stretch | 1:68.8.0-1~deb9u1 | DSA-4683-1 | ||
| thunderbird | source | buster | 1:68.8.0-1~deb10u1 | DSA-4683-1 | ||
| thunderbird | source | (unstable) | 1:68.8.0-1 |
[stretch] - chromium <end-of-life> (see DSA 4562)
https://www.mozilla.org/en-US/security/advisories/mfsa2020-16/#CVE-2020-6831
https://www.mozilla.org/en-US/security/advisories/mfsa2020-17/#CVE-2020-6831
https://www.mozilla.org/en-US/security/advisories/mfsa2020-18/#CVE-2020-6831