CVE-2021-43538
published 2021-12-08CVE-2021-43538: By misusing a race in our notification code, an attacker could have forcefully hidden the notification for pages that had received full screen and pointer lock…
PriorityP419medium4.3CVSS 3.1
AVNACLPRNUIRSUCNILAN
EPSS
1.16%
63.2th percentile
By misusing a race in our notification code, an attacker could have forcefully hidden the notification for pages that had received full screen and pointer lock access, which could have been used for spoofing attacks. This vulnerability affects Thunderbird < 91.4.0, Firefox ESR < 91.4.0, and Firefox < 95.
Affected
23 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | debian_linux | — | — |
| debian | debian_linux | — | — |
| debian | debian_linux | — | — |
| debian | firefox | < firefox 95.0-1 (sid) | firefox 95.0-1 (sid) |
| debian | firefox-esr | < firefox 95.0-1 (sid) | firefox 95.0-1 (sid) |
| debian | thunderbird | < firefox 95.0-1 (sid) | firefox 95.0-1 (sid) |
| mozilla | firefox | < 95.0 | 95.0 |
| mozilla | firefox | — | — |
| mozilla | firefox | >= 0 < 95.0.1+build2-0ubuntu0.18.04.1 | 95.0.1+build2-0ubuntu0.18.04.1 |
| mozilla | firefox | >= 0 < 95.0+build1-0ubuntu0.18.04.1 | 95.0+build1-0ubuntu0.18.04.1 |
| mozilla | firefox | >= 0 < 95.0.1+build2-0ubuntu0.20.04.1 | 95.0.1+build2-0ubuntu0.20.04.1 |
| mozilla | firefox | >= 0 < 95.0+build1-0ubuntu0.20.04.1 | 95.0+build1-0ubuntu0.20.04.1 |
| mozilla | firefox | >= unspecified < 95 | 95 |
| mozilla | firefox_esr | < 91.4.0 | 91.4.0 |
| mozilla | firefox_esr | >= unspecified < 91.4.0 | 91.4.0 |
| mozilla | thunderbird | < 91.4.0 | 91.4.0 |
| mozilla | thunderbird | >= 0 < 1:91.4.1-1~deb11u1 | 1:91.4.1-1~deb11u1 |
| mozilla | thunderbird | >= 0 < 1:91.4.0-1 | 1:91.4.0-1 |
| mozilla | thunderbird | >= 0 < 1:91.4.0-1 | 1:91.4.0-1 |
| mozilla | thunderbird | >= 0 < 1:91.4.0-1 | 1:91.4.0-1 |
| mozilla | thunderbird | >= 0 < 1:91.5.0+build1-0ubuntu0.18.04.1 | 1:91.5.0+build1-0ubuntu0.18.04.1 |
| mozilla | thunderbird | >= 0 < 1:91.5.0+build1-0ubuntu0.20.04.1 | 1:91.5.0+build1-0ubuntu0.20.04.1 |
| mozilla | thunderbird | >= unspecified < 91.4.0 | 91.4.0 |
CVSS provenance
nvdv3.14.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
nvdv2.04.3MEDIUMAV:N/AC:M/Au:N/C:N/I:P/A:N
osv8.8HIGH
vendor_ubuntu8.8HIGH
vendor_debian4.3MEDIUM
vendor_redhat4.3MEDIUM
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Ubuntu
Thunderbird vulnerabilities
vendor_ubuntu·2022-01-21·CVSS 6.5
CVE-2021-4140 [MEDIUM] Thunderbird vulnerabilities
Title: Thunderbird vulnerabilities
Summary: Several security issues were fixed in Thunderbird.
Multiple security issues were discovered in Thunderbird. If a user were
tricked into opening a specially crafted website in a browsing context, an
attacker could potentially exploit these to cause a denial of service,
obtain sensitive information, conduct spoofing attacks, bypass security
restrictions, or execute arbitrary code. (CVE-2021-4129, CVE-2021-4140,
CVE-2021-43536, CVE-2021-43537, CVE-2021-43538, CVE-2021-43539,
CVE-2021-43541, CVE-2021-43542, CVE-2021-43543, CVE-2021-43545,
CVE-2021-43656, CVE-2022-22737, CVE-2022-22738, CVE-2022-22739,
CVE-2022-22740, CVE-2022-22741, CVE-2022-22742, CVE-2022-22743,
CVE-2022-22745, CVE-2022-22747, CVE-2022-22748, CVE-2022-22751)
It was discovered th
Ubuntu
Thunderbird vulnerabilities
vendor_ubuntu·2022-01-21·CVSS 8.8
CVE-2022-22742 [HIGH] Thunderbird vulnerabilities
Title: Thunderbird vulnerabilities
Summary: Several security issues were fixed in Thunderbird.
Multiple security issues were discovered in Thunderbird. If a user were
tricked into opening a specially crafted website in a browsing context, an
attacker could potentially exploit these to cause a denial of service,
obtain sensitive information, trick a user into accepting unwanted
permissions, conduct header splitting attacks, conduct spoofing attacks,
bypass security restrictions, confuse the user, or execute arbitrary code.
(CVE-2021-4129, CVE-2021-4140, CVE-2021-29981, CVE-2021-29982,
CVE-2021-29987, CVE-2021-29991, CVE-2021-38495, CVE-2021-38496,
CVE-2021-38497, CVE-2021-38498, CVE-2021-38500, CVE-2021-38501,
CVE-2021-38503, CVE-2021-38504, CVE-2021-38506, CVE-2021-38507,
CVE-2021-38508,
Ubuntu
Firefox regressions
vendor_ubuntu·2021-12-20·CVSS 6.5
[MEDIUM] Firefox regressions
Title: Firefox regressions
Summary: USN-5186-1 caused some minor regressions in Firefox.
USN-5186-1 fixed vulnerabilities in Firefox. The update introduced several
minor regressions. This update fixes the problem.
We apologize for the inconvenience.
Original advisory details:
Multiple security issues were discovered in Firefox. If a user were
tricked into opening a specially crafted website, an attacker could
potentially exploit these to cause a denial of service, obtain sensitive
information, conduct spoofing attacks, bypass CSP restrictions, or
execute arbitrary code. (CVE-2021-43536, CVE-2021-43537, CVE-2021-43538,
CVE-2021-43539, CVE-2021-43541, CVE-2021-43542, CVE-2021-43543,
CVE-2021-43545, CVE-2021-43546)
A security issue was discovered with the handling of WebExtension
permis
Ubuntu
Firefox vulnerabilities
vendor_ubuntu·2021-12-09·CVSS 6.5
CVE-2021-43538 [MEDIUM] Firefox vulnerabilities
Title: Firefox vulnerabilities
Summary: Firefox could be made to crash or run programs as your login if it
opened a malicious website.
Multiple security issues were discovered in Firefox. If a user were
tricked into opening a specially crafted website, an attacker could
potentially exploit these to cause a denial of service, obtain sensitive
information, conduct spoofing attacks, bypass CSP restrictions, or
execute arbitrary code. (CVE-2021-43536, CVE-2021-43537, CVE-2021-43538,
CVE-2021-43539, CVE-2021-43541, CVE-2021-43542, CVE-2021-43543,
CVE-2021-43545, CVE-2021-43546)
A security issue was discovered with the handling of WebExtension
permissions. If a user were tricked into installing a specially crafted
extension, an attacker could potentially exploit this to create and
install a s
Red Hat
Mozilla: Missing fullscreen and pointer lock notification when requesting both
vendor_redhat·2021-12-07·CVSS 4.3
CVE-2021-43538 [MEDIUM] CWE-1021 Mozilla: Missing fullscreen and pointer lock notification when requesting both
Mozilla: Missing fullscreen and pointer lock notification when requesting both
By misusing a race in our notification code, an attacker could have forcefully hidden the notification for pages that had received full screen and pointer lock access, which could have been used for spoofing attacks. This vulnerability affects Thunderbird < 91.4.0, Firefox ESR < 91.4.0, and Firefox < 95.
The Mozilla Foundation Security Advisory describes this flaw as:
By misusing a race in our notification code, an attacker could have forcefully hidden the notification for pages that had received full screen and pointer lock access, which could have been used for spoofing attacks.
Package: firefox (Red Hat Enterprise Linux 6) - Out of support scope
Package: thunderbird (Red Hat Enterprise Linux 6) - Out of s
Debian
CVE-2021-43538: firefox - By misusing a race in our notification code, an attacker could have forcefully h...
vendor_debian·2021·CVSS 4.3
CVE-2021-43538 [MEDIUM] CVE-2021-43538: firefox - By misusing a race in our notification code, an attacker could have forcefully h...
By misusing a race in our notification code, an attacker could have forcefully hidden the notification for pages that had received full screen and pointer lock access, which could have been used for spoofing attacks. This vulnerability affects Thunderbird < 91.4.0, Firefox ESR < 91.4.0, and Firefox < 95.
Scope: local
sid: resolved (fixed in 95.0-1)
Mozilla
Mozilla Foundation Security Advisory 2021-53: CVE-2021-43538
vendor_mozilla·CVSS 4.3
CVE-2021-43538 [MEDIUM] Mozilla Foundation Security Advisory 2021-53: CVE-2021-43538
Mozilla Foundation Security Advisory 2021-53
CVE: CVE-2021-43538
Product: Firefox ESR
Impact: high
Fixed in: Firefox ESR 91.4
Mozilla
Mozilla Foundation Security Advisory 2021-52: CVE-2021-43538
vendor_mozilla·CVSS 4.3
CVE-2021-43538 [MEDIUM] Mozilla Foundation Security Advisory 2021-52: CVE-2021-43538
Mozilla Foundation Security Advisory 2021-52
CVE: CVE-2021-43538
Product: Firefox
Impact: high
Fixed in: Firefox 95
Mozilla
Mozilla Foundation Security Advisory 2021-54: CVE-2021-43538
vendor_mozilla·CVSS 4.3
CVE-2021-43538 [MEDIUM] Mozilla Foundation Security Advisory 2021-54: CVE-2021-43538
Mozilla Foundation Security Advisory 2021-54
CVE: CVE-2021-43538
Product: Thunderbird
Impact: high
Fixed in: Thunderbird 91.4
OSV
thunderbird vulnerabilities
osv·2022-01-21·CVSS 8.8
CVE-2021-4129 [HIGH] thunderbird vulnerabilities
thunderbird vulnerabilities
Multiple security issues were discovered in Thunderbird. If a user were
tricked into opening a specially crafted website in a browsing context, an
attacker could potentially exploit these to cause a denial of service,
obtain sensitive information, trick a user into accepting unwanted
permissions, conduct header splitting attacks, conduct spoofing attacks,
bypass security restrictions, confuse the user, or execute arbitrary code.
(CVE-2021-4129, CVE-2021-4140, CVE-2021-29981, CVE-2021-29982,
CVE-2021-29987, CVE-2021-29991, CVE-2021-38495, CVE-2021-38496,
CVE-2021-38497, CVE-2021-38498, CVE-2021-38500, CVE-2021-38501,
CVE-2021-38503, CVE-2021-38504, CVE-2021-38506, CVE-2021-38507,
CVE-2021-38508, CVE-2021-38509, CVE-2021-43534, CVE-2021-43535,
CVE-2021-43536, CVE
OSV
firefox regressions
osv·2021-12-20·CVSS 6.5
[MEDIUM] firefox regressions
firefox regressions
USN-5186-1 fixed vulnerabilities in Firefox. The update introduced several
minor regressions. This update fixes the problem.
We apologize for the inconvenience.
Original advisory details:
Multiple security issues were discovered in Firefox. If a user were
tricked into opening a specially crafted website, an attacker could
potentially exploit these to cause a denial of service, obtain sensitive
information, conduct spoofing attacks, bypass CSP restrictions, or
execute arbitrary code. (CVE-2021-43536, CVE-2021-43537, CVE-2021-43538,
CVE-2021-43539, CVE-2021-43541, CVE-2021-43542, CVE-2021-43543,
CVE-2021-43545, CVE-2021-43546)
A security issue was discovered with the handling of WebExtension
permissions. If a user were tricked into installing a specially crafted
exte
GHSA
GHSA-9mvw-9c9q-7cmm: By misusing a race in our notification code, an attacker could have forcefully hidden the notification for pages that had received full screen and poi
ghsa_unreviewed·2021-12-09
CVE-2021-43538 [MEDIUM] CWE-362 GHSA-9mvw-9c9q-7cmm: By misusing a race in our notification code, an attacker could have forcefully hidden the notification for pages that had received full screen and poi
By misusing a race in our notification code, an attacker could have forcefully hidden the notification for pages that had received full screen and pointer lock access, which could have been used for spoofing attacks. This vulnerability affects Thunderbird < 91.4.0, Firefox ESR < 91.4.0, and Firefox < 95.
OSV
firefox vulnerabilities
osv·2021-12-09·CVSS 6.5
CVE-2021-43536 [MEDIUM] firefox vulnerabilities
firefox vulnerabilities
Multiple security issues were discovered in Firefox. If a user were
tricked into opening a specially crafted website, an attacker could
potentially exploit these to cause a denial of service, obtain sensitive
information, conduct spoofing attacks, bypass CSP restrictions, or
execute arbitrary code. (CVE-2021-43536, CVE-2021-43537, CVE-2021-43538,
CVE-2021-43539, CVE-2021-43541, CVE-2021-43542, CVE-2021-43543,
CVE-2021-43545, CVE-2021-43546)
A security issue was discovered with the handling of WebExtension
permissions. If a user were tricked into installing a specially crafted
extension, an attacker could potentially exploit this to create and
install a service worker that wouldn't be uninstalled with the extension.
(CVE-2021-43540)
OSV
CVE-2021-43538: By misusing a race in our notification code, an attacker could have forcefully hidden the notification for pages that had received full screen and poi
osv·2021-12-08·CVSS 4.3
CVE-2021-43538 [MEDIUM] CVE-2021-43538: By misusing a race in our notification code, an attacker could have forcefully hidden the notification for pages that had received full screen and poi
By misusing a race in our notification code, an attacker could have forcefully hidden the notification for pages that had received full screen and pointer lock access, which could have been used for spoofing attacks. This vulnerability affects Thunderbird < 91.4.0, Firefox ESR < 91.4.0, and Firefox < 95.
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
https://bugzilla.mozilla.org/show_bug.cgi?id=1739091https://lists.debian.org/debian-lts-announce/2021/12/msg00030.htmlhttps://lists.debian.org/debian-lts-announce/2022/01/msg00001.htmlhttps://security.gentoo.org/glsa/202202-03https://security.gentoo.org/glsa/202208-14https://www.debian.org/security/2021/dsa-5026https://www.debian.org/security/2022/dsa-5034https://www.mozilla.org/security/advisories/mfsa2021-52/https://www.mozilla.org/security/advisories/mfsa2021-53/https://www.mozilla.org/security/advisories/mfsa2021-54/https://bugzilla.mozilla.org/show_bug.cgi?id=1739091https://lists.debian.org/debian-lts-announce/2021/12/msg00030.htmlhttps://lists.debian.org/debian-lts-announce/2022/01/msg00001.htmlhttps://security.gentoo.org/glsa/202202-03https://security.gentoo.org/glsa/202208-14https://www.debian.org/security/2021/dsa-5026https://www.debian.org/security/2022/dsa-5034https://www.mozilla.org/security/advisories/mfsa2021-52/https://www.mozilla.org/security/advisories/mfsa2021-53/https://www.mozilla.org/security/advisories/mfsa2021-54/
2021-12-08
Published