CVE-2021-43537
published 2021-12-08CVE-2021-43537: An incorrect type conversion of sizes from 64bit to 32bit integers allowed an attacker to corrupt memory leading to a potentially exploitable crash. This…
PriorityP344high8.8CVSS 3.1
AVNACLPRNUIRSUCHIHAH
EPSS
2.02%
78.6th percentile
An incorrect type conversion of sizes from 64bit to 32bit integers allowed an attacker to corrupt memory leading to a potentially exploitable crash. 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
nvdv3.18.8HIGHCVSS: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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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-hjx6-wrvc-5958: An incorrect type conversion of sizes from 64bit to 32bit integers allowed an attacker to corrupt memory leading to a potentially exploitable crash
ghsa_unreviewed·2021-12-09
CVE-2021-43537 [HIGH] CWE-704 GHSA-hjx6-wrvc-5958: An incorrect type conversion of sizes from 64bit to 32bit integers allowed an attacker to corrupt memory leading to a potentially exploitable crash
An incorrect type conversion of sizes from 64bit to 32bit integers allowed an attacker to corrupt memory leading to a potentially exploitable crash. 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-2021-43537: An incorrect type conversion of sizes from 64bit to 32bit integers allowed an attacker to corrupt memory leading to a potentially exploitable crash
osv·2021-12-08·CVSS 8.8
CVE-2021-43537 [HIGH] CVE-2021-43537: An incorrect type conversion of sizes from 64bit to 32bit integers allowed an attacker to corrupt memory leading to a potentially exploitable crash
An incorrect type conversion of sizes from 64bit to 32bit integers allowed an attacker to corrupt memory leading to a potentially exploitable crash. This vulnerability affects Thunderbird < 91.4.0, Firefox ESR < 91.4.0, and Firefox < 95.
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: Heap buffer overflow when using structured clone
vendor_redhat·2021-12-07·CVSS 8.8
CVE-2021-43537 [HIGH] CWE-120 Mozilla: Heap buffer overflow when using structured clone
Mozilla: Heap buffer overflow when using structured clone
An incorrect type conversion of sizes from 64bit to 32bit integers allowed an attacker to corrupt memory leading to a potentially exploitable crash. This vulnerability affects Thunderbird < 91.4.0, Firefox ESR < 91.4.0, and Firefox < 95.
The Mozilla Foundation Security Advisory describes this flaw as:
An incorrect type conversion of sizes from 64bit to 32bit integers allowed an attacker to corrupt memory leading to 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-2021-43537: firefox - An incorrect type conversion of sizes from 64bit to 32bit integers allowed an at...
vendor_debian·2021·CVSS 8.8
CVE-2021-43537 [HIGH] CVE-2021-43537: firefox - An incorrect type conversion of sizes from 64bit to 32bit integers allowed an at...
An incorrect type conversion of sizes from 64bit to 32bit integers allowed an attacker to corrupt memory leading to a potentially exploitable crash. 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 2021-54: CVE-2021-43537
vendor_mozilla·CVSS 8.8
CVE-2021-43537 [HIGH] Mozilla Foundation Security Advisory 2021-54: CVE-2021-43537
Mozilla Foundation Security Advisory 2021-54
CVE: CVE-2021-43537
Product: Thunderbird
Impact: high
Fixed in: Thunderbird 91.4
Mozilla
Mozilla Foundation Security Advisory 2021-53: CVE-2021-43537
vendor_mozilla·CVSS 8.8
CVE-2021-43537 [HIGH] Mozilla Foundation Security Advisory 2021-53: CVE-2021-43537
Mozilla Foundation Security Advisory 2021-53
CVE: CVE-2021-43537
Product: Firefox ESR
Impact: high
Fixed in: Firefox ESR 91.4
Mozilla
Mozilla Foundation Security Advisory 2021-52: CVE-2021-43537
vendor_mozilla·CVSS 8.8
CVE-2021-43537 [HIGH] Mozilla Foundation Security Advisory 2021-52: CVE-2021-43537
Mozilla Foundation Security Advisory 2021-52
CVE: CVE-2021-43537
Product: Firefox
Impact: high
Fixed in: Firefox 95
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
CWE
Heap-based Buffer Overflow
mitre_cwe
CWE-122 Heap-based Buffer Overflow
CWE-122: Heap-based Buffer Overflow
A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().
Modes of Introduction:
Phase: Implementation
Common Consequences:
Scope: Availability. Impact: DoS: Crash, Exit, or Restart, DoS: Resource Consumption (CPU), DoS: Resource Consumption (Memory). Buffer overflows generally lead to crashes. Other attacks leading to lack of availability are possible, including putting the program into an infinite loop.
Scope: Integrity, Confidentiality, Availability, Access Control. Impact: Execute Unauthorized Code or Commands, Bypass Protection Mechanism, Modify Memory. Buffer overflows often can be used to e
CWE
Integer Overflow or Wraparound
mitre_cwe
CWE-190 Integer Overflow or Wraparound
CWE-190: Integer Overflow or Wraparound
The product performs a calculation that can
produce an integer overflow or wraparound when the logic
assumes that the resulting value will always be larger than
the original value. This occurs when an integer value is
incremented to a value that is too large to store in the
associated representation. When this occurs, the value may
become a very small or negative number.
Modes of Introduction:
Phase: Implementation
Note: This weakness may become security critical when determining the offset or size in behaviors such as memory allocation, copying, and concatenation.
Common Consequences:
Scope: Availability. Impact: DoS: Crash, Exit, or Restart, DoS: Resource Consumption (Memory), DoS: Instability. This weakness can generally lead to undefined behav
CWE
Incorrect Type Conversion or Cast
mitre_cwe
CWE-704 Incorrect Type Conversion or Cast
CWE-704: Incorrect Type Conversion or Cast
The product does not correctly convert an object, resource, or structure from one type to a different type.
Modes of Introduction:
Phase: Implementation
Common Consequences:
Scope: Other. Impact: Other.
Detection Methods:
Fuzzing: Fuzz testing (fuzzing) is a powerful technique for generating large numbers of diverse inputs - either randomly or algorithmically - and dynamically invoking the code with those inputs. Even with random inputs, it is often capable of generating unexpected results such as crashes, memory corruption, or resource consumption. Fuzzing effectively produces repeatable test cases that clearly indicate bugs, which helps developers to diagnose the issues. (Effectiveness: High)
Examples:
In this example, depending on the retu
CWE
Incorrect Conversion between Numeric Types
mitre_cwe
CWE-681 Incorrect Conversion between Numeric Types
CWE-681: Incorrect Conversion between Numeric Types
When converting from one data type to another, such as long to integer, data can be omitted or translated in a way that produces unexpected values. If the resulting values are used in a sensitive context, then dangerous behaviors may occur.
Modes of Introduction:
Phase: Implementation
Common Consequences:
Scope: Other, Integrity. Impact: Unexpected State, Quality Degradation. The program could wind up using the wrong number and generate incorrect results. If the number is used to allocate resources or make a security decision, then this could introduce a vulnerability.
Detection Methods:
Automated Static Analysis: Automated static analysis, commonly referred to as Static Application Security Testing (SAST), can find some instances of
CWE
Integer Overflow to Buffer Overflow
mitre_cwe·CVSS 8.8
[HIGH] CWE-680 Integer Overflow to Buffer Overflow
CWE-680: Integer Overflow to Buffer Overflow
The product performs a calculation to determine how much memory to allocate, but an integer overflow can occur that causes less memory to be allocated than expected, leading to a buffer overflow.
Modes of Introduction:
Phase: Implementation
Common Consequences:
Scope: Integrity, Availability, Confidentiality. Impact: Modify Memory, DoS: Crash, Exit, or Restart, Execute Unauthorized Code or Commands.
Detection Methods:
Automated Static Analysis: Automated static analysis, commonly referred to as Static Application Security Testing (SAST), can find some instances of this weakness by analyzing source code (or binary/compiled code) without having to execute it. Typically, this is done by building a model of data flow and control flow, then searc
https://bugzilla.mozilla.org/show_bug.cgi?id=1738237https://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=1738237https://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