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Vulnerability details: VCID-ygcc-tsv1-aaap
Vulnerability ID VCID-ygcc-tsv1-aaap
Aliases CVE-2021-29981
Summary An issue present in lowering/register allocation could have led to obscure but deterministic register confusion failures in JITted code that would lead to a potentially exploitable crash. This vulnerability affects Firefox < 91 and Thunderbird < 91.
Status Published
Exploitability 0.5
Weighted Severity 8.0
Risk 4.0
Affected and Fixed Packages Package Details
Weaknesses (0)
There are no known CWE.
System Score Found at
generic_textual Medium http://people.canonical.com/~ubuntu-security/cve/2021/CVE-2021-29981.html
epss 0.00219 https://api.first.org/data/v1/epss?cve=CVE-2021-29981
epss 0.00219 https://api.first.org/data/v1/epss?cve=CVE-2021-29981
epss 0.00219 https://api.first.org/data/v1/epss?cve=CVE-2021-29981
epss 0.00219 https://api.first.org/data/v1/epss?cve=CVE-2021-29981
epss 0.00219 https://api.first.org/data/v1/epss?cve=CVE-2021-29981
epss 0.00219 https://api.first.org/data/v1/epss?cve=CVE-2021-29981
epss 0.00219 https://api.first.org/data/v1/epss?cve=CVE-2021-29981
epss 0.00219 https://api.first.org/data/v1/epss?cve=CVE-2021-29981
epss 0.00219 https://api.first.org/data/v1/epss?cve=CVE-2021-29981
epss 0.00219 https://api.first.org/data/v1/epss?cve=CVE-2021-29981
epss 0.00219 https://api.first.org/data/v1/epss?cve=CVE-2021-29981
epss 0.00219 https://api.first.org/data/v1/epss?cve=CVE-2021-29981
epss 0.00239 https://api.first.org/data/v1/epss?cve=CVE-2021-29981
epss 0.00239 https://api.first.org/data/v1/epss?cve=CVE-2021-29981
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epss 0.00239 https://api.first.org/data/v1/epss?cve=CVE-2021-29981
epss 0.00239 https://api.first.org/data/v1/epss?cve=CVE-2021-29981
epss 0.00239 https://api.first.org/data/v1/epss?cve=CVE-2021-29981
epss 0.00239 https://api.first.org/data/v1/epss?cve=CVE-2021-29981
epss 0.00239 https://api.first.org/data/v1/epss?cve=CVE-2021-29981
epss 0.00239 https://api.first.org/data/v1/epss?cve=CVE-2021-29981
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epss 0.00239 https://api.first.org/data/v1/epss?cve=CVE-2021-29981
epss 0.00239 https://api.first.org/data/v1/epss?cve=CVE-2021-29981
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epss 0.00239 https://api.first.org/data/v1/epss?cve=CVE-2021-29981
epss 0.00239 https://api.first.org/data/v1/epss?cve=CVE-2021-29981
epss 0.00239 https://api.first.org/data/v1/epss?cve=CVE-2021-29981
epss 0.00239 https://api.first.org/data/v1/epss?cve=CVE-2021-29981
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epss 0.00239 https://api.first.org/data/v1/epss?cve=CVE-2021-29981
epss 0.00239 https://api.first.org/data/v1/epss?cve=CVE-2021-29981
epss 0.00239 https://api.first.org/data/v1/epss?cve=CVE-2021-29981
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epss 0.00239 https://api.first.org/data/v1/epss?cve=CVE-2021-29981
epss 0.00239 https://api.first.org/data/v1/epss?cve=CVE-2021-29981
epss 0.00239 https://api.first.org/data/v1/epss?cve=CVE-2021-29981
epss 0.00239 https://api.first.org/data/v1/epss?cve=CVE-2021-29981
epss 0.00239 https://api.first.org/data/v1/epss?cve=CVE-2021-29981
epss 0.00239 https://api.first.org/data/v1/epss?cve=CVE-2021-29981
epss 0.00239 https://api.first.org/data/v1/epss?cve=CVE-2021-29981
epss 0.00239 https://api.first.org/data/v1/epss?cve=CVE-2021-29981
epss 0.00251 https://api.first.org/data/v1/epss?cve=CVE-2021-29981
epss 0.00277 https://api.first.org/data/v1/epss?cve=CVE-2021-29981
epss 0.00278 https://api.first.org/data/v1/epss?cve=CVE-2021-29981
epss 0.00278 https://api.first.org/data/v1/epss?cve=CVE-2021-29981
epss 0.00278 https://api.first.org/data/v1/epss?cve=CVE-2021-29981
epss 0.00278 https://api.first.org/data/v1/epss?cve=CVE-2021-29981
epss 0.0044 https://api.first.org/data/v1/epss?cve=CVE-2021-29981
epss 0.00445 https://api.first.org/data/v1/epss?cve=CVE-2021-29981
epss 0.00445 https://api.first.org/data/v1/epss?cve=CVE-2021-29981
epss 0.00445 https://api.first.org/data/v1/epss?cve=CVE-2021-29981
epss 0.00445 https://api.first.org/data/v1/epss?cve=CVE-2021-29981
epss 0.00445 https://api.first.org/data/v1/epss?cve=CVE-2021-29981
epss 0.00445 https://api.first.org/data/v1/epss?cve=CVE-2021-29981
epss 0.00445 https://api.first.org/data/v1/epss?cve=CVE-2021-29981
epss 0.00445 https://api.first.org/data/v1/epss?cve=CVE-2021-29981
epss 0.00445 https://api.first.org/data/v1/epss?cve=CVE-2021-29981
epss 0.00445 https://api.first.org/data/v1/epss?cve=CVE-2021-29981
epss 0.00445 https://api.first.org/data/v1/epss?cve=CVE-2021-29981
epss 0.00445 https://api.first.org/data/v1/epss?cve=CVE-2021-29981
epss 0.00445 https://api.first.org/data/v1/epss?cve=CVE-2021-29981
epss 0.00445 https://api.first.org/data/v1/epss?cve=CVE-2021-29981
epss 0.00445 https://api.first.org/data/v1/epss?cve=CVE-2021-29981
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epss 0.00445 https://api.first.org/data/v1/epss?cve=CVE-2021-29981
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epss 0.00445 https://api.first.org/data/v1/epss?cve=CVE-2021-29981
epss 0.00445 https://api.first.org/data/v1/epss?cve=CVE-2021-29981
epss 0.00445 https://api.first.org/data/v1/epss?cve=CVE-2021-29981
epss 0.00445 https://api.first.org/data/v1/epss?cve=CVE-2021-29981
epss 0.00445 https://api.first.org/data/v1/epss?cve=CVE-2021-29981
epss 0.00445 https://api.first.org/data/v1/epss?cve=CVE-2021-29981
epss 0.00445 https://api.first.org/data/v1/epss?cve=CVE-2021-29981
epss 0.00445 https://api.first.org/data/v1/epss?cve=CVE-2021-29981
epss 0.00445 https://api.first.org/data/v1/epss?cve=CVE-2021-29981
epss 0.00445 https://api.first.org/data/v1/epss?cve=CVE-2021-29981
epss 0.00445 https://api.first.org/data/v1/epss?cve=CVE-2021-29981
epss 0.00445 https://api.first.org/data/v1/epss?cve=CVE-2021-29981
generic_textual Medium https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-29981
cvssv3.1 8.8 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv2 6.8 https://nvd.nist.gov/vuln/detail/CVE-2021-29981
cvssv3 8.8 https://nvd.nist.gov/vuln/detail/CVE-2021-29981
cvssv3.1 8.8 https://nvd.nist.gov/vuln/detail/CVE-2021-29981
archlinux High https://security.archlinux.org/AVG-2269
archlinux High https://security.archlinux.org/AVG-2291
generic_textual Medium https://ubuntu.com/security/notices/USN-5037-1
generic_textual high https://www.mozilla.org/en-US/security/advisories/mfsa2021-33
generic_textual Medium https://www.mozilla.org/en-US/security/advisories/mfsa2021-33/#CVE-2021-29981
generic_textual high https://www.mozilla.org/en-US/security/advisories/mfsa2021-36
Reference id Reference type URL
http://people.canonical.com/~ubuntu-security/cve/2021/CVE-2021-29981.html
https://api.first.org/data/v1/epss?cve=CVE-2021-29981
https://bugzilla.mozilla.org/show_bug.cgi?id=1707774
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-29981
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
https://security.gentoo.org/glsa/202202-03
https://ubuntu.com/security/notices/USN-5037-1
https://www.mozilla.org/en-US/security/advisories/mfsa2021-33/#CVE-2021-29981
https://www.mozilla.org/security/advisories/mfsa2021-33/
https://www.mozilla.org/security/advisories/mfsa2021-36/
ASA-202108-14 https://security.archlinux.org/ASA-202108-14
AVG-2269 https://security.archlinux.org/AVG-2269
AVG-2291 https://security.archlinux.org/AVG-2291
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*
CVE-2021-29981 https://nvd.nist.gov/vuln/detail/CVE-2021-29981
mfsa2021-33 https://www.mozilla.org/en-US/security/advisories/mfsa2021-33
mfsa2021-36 https://www.mozilla.org/en-US/security/advisories/mfsa2021-36
USN-5037-1 https://usn.ubuntu.com/5037-1/
USN-5248-1 https://usn.ubuntu.com/5248-1/
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Found at https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: AV:N/AC:M/Au:N/C:P/I:P/A:P Found at https://nvd.nist.gov/vuln/detail/CVE-2021-29981
Exploitability (E) Access Vector (AV) Access Complexity (AC) Authentication (Au) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

high

functional

unproven

proof_of_concept

not_defined

local

adjacent_network

network

high

medium

low

multiple

single

none

none

partial

complete

none

partial

complete

none

partial

complete
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2021-29981
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2021-29981
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Exploit Prediction Scoring System (EPSS)
Percentile 0.60362
EPSS Score 0.00219
Published At Nov. 1, 2024, midnight
Date Actor Action Source VulnerableCode Version
There are no relevant records.