| Name | CVE-2021-23999 |
| Description | If a Blob URL was loaded through some unusual user interaction, it could have been loaded by the System Principal and granted additional privileges that should not be granted to web content. This vulnerability affects Firefox ESR < 78.10, Thunderbird < 78.10, and Firefox < 88. |
| 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-2632-1, DLA-2633-1, DSA-4895-1, DSA-4897-1 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| firefox (PTS) | sid | 125.0.2-1 | fixed |
| firefox-esr (PTS) | buster | 91.12.0esr-1~deb10u1 | fixed |
| buster (security) | 115.10.0esr-1~deb10u1 | fixed | |
| bullseye | 115.7.0esr-1~deb11u1 | fixed | |
| bullseye (security) | 115.10.0esr-1~deb11u1 | fixed | |
| bookworm | 115.7.0esr-1~deb12u1 | fixed | |
| bookworm (security) | 115.10.0esr-1~deb12u1 | fixed | |
| trixie | 115.8.0esr-1 | fixed | |
| sid | 115.10.0esr-1 | fixed | |
| thunderbird (PTS) | buster | 1:91.12.0-1~deb10u1 | fixed |
| buster (security) | 1:115.10.1-1~deb10u1 | fixed | |
| bullseye | 1:115.7.0-1~deb11u1 | fixed | |
| bullseye (security) | 1:115.10.1-1~deb11u1 | fixed | |
| bookworm | 1:115.7.0-1~deb12u1 | fixed | |
| bookworm (security) | 1:115.10.1-1~deb12u1 | fixed | |
| sid | 1:115.10.1-1 | 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) | 88.0-1 | |||
| firefox-esr | source | stretch | 78.10.0esr-1~deb9u1 | DLA-2633-1 | ||
| firefox-esr | source | buster | 78.10.0esr-1~deb10u1 | DSA-4895-1 | ||
| firefox-esr | source | (unstable) | 78.10.0esr-1 | |||
| thunderbird | source | stretch | 1:78.10.0-1~deb9u1 | DLA-2632-1 | ||
| thunderbird | source | buster | 1:78.10.0-1~deb10u1 | DSA-4897-1 | ||
| thunderbird | source | (unstable) | 1:78.10.0-1 |
https://www.mozilla.org/en-US/security/advisories/mfsa2021-14/#CVE-2021-23999
https://www.mozilla.org/en-US/security/advisories/mfsa2021-15/#CVE-2021-23999
https://www.mozilla.org/en-US/security/advisories/mfsa2021-16/#CVE-2021-23999