CVE-2021-43535
published 2021-12-08CVE-2021-43535: A use-after-free could have occured when an HTTP2 session object was released on a different thread, leading to memory corruption and a potentially exploitable…
PriorityP337high8.8CVSS 3.1
AVNACLPRNUIRSUCHIHAH
EPSS
1.11%
61.9th percentile
A use-after-free could have occured when an HTTP2 session object was released on a different thread, leading to memory corruption and a potentially exploitable crash. This vulnerability affects Firefox < 93, Thunderbird < 91.3, and Firefox ESR < 91.3.
Affected
19 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | debian_linux | — | — |
| debian | debian_linux | — | — |
| debian | debian_linux | — | — |
| debian | firefox | < firefox 93.0-1 (sid) | firefox 93.0-1 (sid) |
| debian | firefox-esr | < firefox 93.0-1 (sid) | firefox 93.0-1 (sid) |
| debian | thunderbird | < firefox 93.0-1 (sid) | firefox 93.0-1 (sid) |
| mozilla | firefox | < 93.0 | 93.0 |
| mozilla | firefox | — | — |
| mozilla | firefox | >= unspecified < 93 | 93 |
| mozilla | firefox_esr | < 91.3.0 | 91.3.0 |
| mozilla | firefox_esr | >= unspecified < 91.3 | 91.3 |
| mozilla | thunderbird | < 91.3.0 | 91.3.0 |
| mozilla | thunderbird | >= 0 < 1:91.4.1-1~deb11u1 | 1:91.4.1-1~deb11u1 |
| mozilla | thunderbird | >= 0 < 1:91.3.0-1 | 1:91.3.0-1 |
| mozilla | thunderbird | >= 0 < 1:91.3.0-1 | 1:91.3.0-1 |
| mozilla | thunderbird | >= 0 < 1:91.3.0-1 | 1:91.3.0-1 |
| 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 < 91.3 | 91.3 |
CVSS provenance
nvdv3.18.8HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
nvdv2.06.8MEDIUMAV:N/AC:M/Au:N/C:P/I:P/A:P
osv8.8HIGH
vendor_debian8.8HIGH
vendor_redhat8.8HIGH
vendor_ubuntu8.8HIGH
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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,
Red Hat
Mozilla: Use-after-free in HTTP2 Session object
vendor_redhat·2021-11-02·CVSS 8.8
CVE-2021-43535 [HIGH] CWE-416 Mozilla: Use-after-free in HTTP2 Session object
Mozilla: Use-after-free in HTTP2 Session object
A use-after-free could have occured when an HTTP2 session object was released on a different thread, leading to memory corruption and a potentially exploitable crash. This vulnerability affects Firefox < 93, Thunderbird < 91.3, and Firefox ESR < 91.3.
The Mozilla Foundation Security Advisory describes this flaw as:
A use-after-free could have occured when an HTTP2 session object was released on a different thread, leading to memory corruption and a potentially exploitable crash.
Package: firefox (Red Hat Enterprise Linux 6) - Out of support scope
Package: thunderbird (Red Hat Enterprise Linux 6) - Out of support scope
Debian
CVE-2021-43535: firefox - A use-after-free could have occured when an HTTP2 session object was released on...
vendor_debian·2021·CVSS 8.8
CVE-2021-43535 [HIGH] CVE-2021-43535: firefox - A use-after-free could have occured when an HTTP2 session object was released on...
A use-after-free could have occured when an HTTP2 session object was released on a different thread, leading to memory corruption and a potentially exploitable crash. This vulnerability affects Firefox < 93, Thunderbird < 91.3, and Firefox ESR < 91.3.
Scope: local
sid: resolved (fixed in 93.0-1)
Mozilla
Mozilla Foundation Security Advisory 2021-50: CVE-2021-43535
vendor_mozilla·CVSS 8.8
CVE-2021-43535 [HIGH] Mozilla Foundation Security Advisory 2021-50: CVE-2021-43535
Mozilla Foundation Security Advisory 2021-50
CVE: CVE-2021-43535
Product: Thunderbird
Impact: high
Fixed in: Thunderbird 91.3
Mozilla
Mozilla Foundation Security Advisory 2021-49: CVE-2021-43535
vendor_mozilla·CVSS 8.8
CVE-2021-43535 [HIGH] Mozilla Foundation Security Advisory 2021-49: CVE-2021-43535
Mozilla Foundation Security Advisory 2021-49
CVE: CVE-2021-43535
Product: Firefox ESR
Impact: high
Fixed in: Firefox ESR 91.3
Mozilla
Mozilla Foundation Security Advisory 2021-43: CVE-2021-43535
vendor_mozilla·CVSS 8.8
CVE-2021-43535 [HIGH] Mozilla Foundation Security Advisory 2021-43: CVE-2021-43535
Mozilla Foundation Security Advisory 2021-43
CVE: CVE-2021-43535
Product: Firefox
Impact: high
Fixed in: Firefox 93
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
GHSA
GHSA-9c2c-v6c7-rjgv: A use-after-free could have occured when an HTTP2 session object was released on a different thread, leading to memory corruption and a potentially ex
ghsa_unreviewed·2021-12-09
CVE-2021-43535 [HIGH] CWE-416 GHSA-9c2c-v6c7-rjgv: A use-after-free could have occured when an HTTP2 session object was released on a different thread, leading to memory corruption and a potentially ex
A use-after-free could have occured when an HTTP2 session object was released on a different thread, leading to memory corruption and a potentially exploitable crash. This vulnerability affects Firefox < 93, Thunderbird < 91.3, and Firefox ESR < 91.3.
OSV
CVE-2021-43535: A use-after-free could have occured when an HTTP2 session object was released on a different thread, leading to memory corruption and a potentially ex
osv·2021-12-08·CVSS 8.8
CVE-2021-43535 [HIGH] CVE-2021-43535: A use-after-free could have occured when an HTTP2 session object was released on a different thread, leading to memory corruption and a potentially ex
A use-after-free could have occured when an HTTP2 session object was released on a different thread, leading to memory corruption and a potentially exploitable crash. This vulnerability affects Firefox < 93, Thunderbird < 91.3, and Firefox ESR < 91.3.
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
https://bugzilla.mozilla.org/show_bug.cgi?id=1667102https://lists.debian.org/debian-lts-announce/2021/12/msg00030.htmlhttps://lists.debian.org/debian-lts-announce/2022/01/msg00001.htmlhttps://www.debian.org/security/2021/dsa-5026https://www.debian.org/security/2022/dsa-5034https://www.mozilla.org/security/advisories/mfsa2021-43/https://www.mozilla.org/security/advisories/mfsa2021-49/https://www.mozilla.org/security/advisories/mfsa2021-50/https://bugzilla.mozilla.org/show_bug.cgi?id=1667102https://lists.debian.org/debian-lts-announce/2021/12/msg00030.htmlhttps://lists.debian.org/debian-lts-announce/2022/01/msg00001.htmlhttps://www.debian.org/security/2021/dsa-5026https://www.debian.org/security/2022/dsa-5034https://www.mozilla.org/security/advisories/mfsa2021-43/https://www.mozilla.org/security/advisories/mfsa2021-49/https://www.mozilla.org/security/advisories/mfsa2021-50/
2021-12-08
Published