| Name | CVE-2020-6798 |
| Description | If a template tag was used in a select tag, the parser could be confused and allow JavaScript parsing and execution when it should not be allowed. A site that relied on the browser behaving correctly could suffer a cross-site scripting vulnerability as a result. In general, this flaw cannot be exploited through email in the Thunderbird product because scripting is disabled when reading mail, but is potentially a risk in browser or browser-like contexts. This vulnerability affects Thunderbird < 68.5, Firefox < 73, and Firefox < ESR68.5. |
| 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-2102-1, DLA-2104-1, DSA-4620-1, DSA-4625-1 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| firefox (PTS) | sid | 139.0-1 | fixed |
| firefox-esr (PTS) | bullseye | 115.14.0esr-1~deb11u1 | fixed |
| bullseye (security) | 128.11.0esr-1~deb11u1 | fixed | |
| bookworm | 128.10.0esr-1~deb12u1 | fixed | |
| bookworm (security) | 128.11.0esr-1~deb12u1 | fixed | |
| sid, trixie | 128.11.0esr-1 | fixed | |
| thunderbird (PTS) | bullseye | 1:115.12.0-1~deb11u1 | fixed |
| bullseye (security) | 1:128.11.0esr-1~deb11u1 | fixed | |
| bookworm | 1:128.10.0esr-1~deb12u1 | fixed | |
| bookworm (security) | 1:128.11.0esr-1~deb12u1 | fixed | |
| sid, trixie | 1:128.11.0esr-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) | 73.0-1 | |||
| firefox-esr | source | jessie | 68.5.0esr-1~deb8u1 | DLA-2102-1 | ||
| firefox-esr | source | stretch | 68.5.0esr-1~deb9u1 | DSA-4620-1 | ||
| firefox-esr | source | buster | 68.5.0esr-1~deb10u1 | DSA-4620-1 | ||
| firefox-esr | source | (unstable) | 68.5.0esr-1 | |||
| thunderbird | source | jessie | 1:68.5.0-1~deb8u1 | DLA-2104-1 | ||
| thunderbird | source | stretch | 1:68.5.0-1~deb9u1 | DSA-4625-1 | ||
| thunderbird | source | buster | 1:68.5.0-1~deb10u1 | DSA-4625-1 | ||
| thunderbird | source | (unstable) | 1:68.5.0-1 |
https://www.mozilla.org/en-US/security/advisories/mfsa2020-05/#CVE-2020-6798
https://www.mozilla.org/en-US/security/advisories/mfsa2020-06/#CVE-2020-6798
https://www.mozilla.org/en-US/security/advisories/mfsa2020-07/#CVE-2020-6798