Name | CVE-2021-43542 |
Description | Using XMLHttpRequest, an attacker could have identified installed applications by probing error messages for loading external protocols. This vulnerability affects Thunderbird < 91.4.0, Firefox ESR < 91.4.0, and Firefox < 95. |
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-2863-1, DLA-2874-1, DSA-5026-1, DSA-5034-1 |
The table below lists information on source packages.
Source Package | Release | Version | Status |
---|---|---|---|
firefox (PTS) | sid | 131.0.2-1 | fixed |
firefox-esr (PTS) | bullseye | 115.14.0esr-1~deb11u1 | fixed |
bullseye (security) | 128.3.0esr-1~deb11u2 | fixed | |
bookworm | 115.14.0esr-1~deb12u1 | fixed | |
bookworm (security) | 128.3.0esr-1~deb12u1 | fixed | |
trixie | 128.3.0esr-2 | fixed | |
sid | 128.3.1esr-1 | fixed | |
thunderbird (PTS) | bullseye | 1:115.12.0-1~deb11u1 | fixed |
bullseye (security) | 1:115.15.0-1~deb11u1 | fixed | |
bookworm | 1:115.12.0-1~deb12u1 | fixed | |
bookworm (security) | 1:115.15.0-1~deb12u1 | fixed | |
trixie | 1:128.2.0esr-1 | fixed | |
sid | 1:128.3.0esr-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) | 95.0-1 | |||
firefox-esr | source | stretch | 91.4.1esr-1~deb9u1 | DLA-2863-1 | ||
firefox-esr | source | bullseye | 91.4.1esr-1~deb11u1 | DSA-5026-1 | ||
firefox-esr | source | (unstable) | 91.4.0esr-1 | |||
thunderbird | source | stretch | 1:91.4.1-1~deb9u1 | DLA-2874-1 | ||
thunderbird | source | buster | 1:91.4.1-1~deb10u1 | DSA-5034-1 | ||
thunderbird | source | bullseye | 1:91.4.1-1~deb11u1 | DSA-5034-1 | ||
thunderbird | source | (unstable) | 1:91.4.0-1 |
https://www.mozilla.org/en-US/security/advisories/mfsa2021-52/#CVE-2021-43542
https://www.mozilla.org/en-US/security/advisories/mfsa2021-53/#CVE-2021-43542
https://www.mozilla.org/en-US/security/advisories/mfsa2021-54/#CVE-2021-43542