Name | CVE-2021-38509 |
Description | Due to an unusual sequence of attacker-controlled events, a Javascript alert() dialog with arbitrary (although unstyled) contents could be displayed over top an uncontrolled webpage of the attacker's choosing. This vulnerability affects Firefox < 94, Thunderbird < 91.3, and Firefox ESR < 91.3. |
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-2863-1, DLA-2874-1, DSA-5026-1, DSA-5034-1 |
NVD severity | medium |
The table below lists information on source packages.
Source Package | Release | Version | Status |
---|---|---|---|
firefox (PTS) | sid | 100.0-1 | fixed |
firefox-esr (PTS) | stretch | 68.10.0esr-1~deb9u1 | vulnerable |
stretch (security) | 91.9.0esr-1~deb9u1 | fixed | |
buster | 78.14.0esr-1~deb10u1 | vulnerable | |
buster (security) | 91.9.0esr-1~deb10u1 | fixed | |
bullseye | 78.15.0esr-1~deb11u1 | vulnerable | |
bullseye (security) | 91.9.0esr-1~deb11u1 | fixed | |
bookworm, sid | 91.9.0esr-1 | fixed | |
thunderbird (PTS) | stretch | 1:68.10.0-1~deb9u1 | vulnerable |
stretch (security) | 1:91.8.0-1~deb9u1 | fixed | |
buster | 1:78.14.0-1~deb10u1 | vulnerable | |
buster (security) | 1:91.8.0-1~deb10u1 | fixed | |
bullseye | 1:78.14.0-1~deb11u1 | vulnerable | |
bullseye (security) | 1:91.8.0-1~deb11u1 | fixed | |
bookworm | 1:91.8.1-1 | fixed | |
sid | 1:91.9.0-1 | 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) | 94.0-1 | |||
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) | 91.3.0esr-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) | 1:91.3.0-1 |
https://www.mozilla.org/en-US/security/advisories/mfsa2021-48/#CVE-2021-38509
https://www.mozilla.org/en-US/security/advisories/mfsa2021-49/#CVE-2021-38509
https://www.mozilla.org/en-US/security/advisories/mfsa2021-50/#CVE-2021-38509