Vulnerability Name:

CVE-2021-29981 (CCN-207136)

Assigned:2021-08-10
Published:2021-08-10
Updated:2022-03-16
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.
CVSS v3 Severity:8.8 High (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H)
7.7 High (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): Required
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): High
Integrity (I): High
Availibility (A): High
6.5 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H)
5.7 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): Required
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): High
CVSS v2 Severity:6.8 Medium (CVSS v2 Vector: AV:N/AC:M/Au:N/C:P/I:P/A:P)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Medium
Authentication (Au): None
Impact Metrics:Confidentiality (C): Partial
Integrity (I): Partial
Availibility (A): Partial
6.8 Medium (CCN CVSS v2 Vector: AV:N/AC:L/Au:S/C:N/I:N/A:C)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Athentication (Au): Single_Instance
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Complete
Vulnerability Type:CWE-noinfo
Vulnerability Consequences:Denial of Service
References:Source: MITRE
Type: CNA
CVE-2021-29981

Source: MISC
Type: Issue Tracking, Vendor Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1707774

Source: XF
Type: UNKNOWN
firefox-cve202129981-dos(207136)

Source: GENTOO
Type: Third Party Advisory
GLSA-202202-03

Source: CCN
Type: Mozilla Foundation Security Advisory 2021-33
Security Vulnerabilities fixed in Firefox 91

Source: MISC
Type: Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2021-33/

Source: MISC
Type: Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2021-36/

Vulnerable Configuration:Configuration 1:
  • cpe:/a:mozilla:firefox:*:*:*:*:*:*:*:* (Version < 91.0)
  • OR cpe:/a:mozilla:thunderbird:*:*:*:*:*:*:*:* (Version < 91.0)

    • * Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:org.opensuse.security:def:7868
    P
    		MozillaFirefox-102.11.0-150200.152.87.1 on GA media (Moderate)
    2023-06-12
    oval:org.opensuse.security:def:51962
    P
    		Security update for net-snmp (Moderate)
    2022-12-13
    oval:org.opensuse.security:def:95400
    P
    		Security update for dovecot23 (Important)
    2022-07-20
    oval:org.opensuse.security:def:3252
    P
    		libsmi-0.4.8-18.55 on GA media (Moderate)
    2022-06-28
    oval:org.opensuse.security:def:94806
    P
    		python3-py-1.8.1-5.6.1 on GA media (Moderate)
    2022-06-22
    oval:org.opensuse.security:def:94882
    P
    		MozillaFirefox-91.8.0-150200.152.26.1 on GA media (Moderate)
    2022-06-22
    oval:org.opensuse.security:def:126871
    P
    		Security update for MozillaFirefox (Important)
    2022-05-09
    oval:org.opensuse.security:def:5234
    P
    		Security update for MozillaFirefox (Important)
    2022-05-09
    oval:org.opensuse.security:def:6029
    P
    		Security update for MozillaFirefox (Important)
    2022-05-09
    oval:org.opensuse.security:def:125705
    P
    		Security update for MozillaFirefox (Important)
    2022-05-09
    oval:org.opensuse.security:def:127268
    P
    		Security update for MozillaFirefox (Important)
    2022-05-09
    oval:org.opensuse.security:def:100056
    P
    		 (Important)
    2022-03-30
    oval:org.opensuse.security:def:6202
    P
    		Security update for bind (Important)
    2022-03-21
    oval:org.opensuse.security:def:6193
    P
    		Security update for MozillaFirefox (Important)
    2022-03-14
    oval:org.opensuse.security:def:99745
    P
    		 (Moderate)
    2022-02-04
    oval:org.opensuse.security:def:111899
    P
    		MozillaFirefox-92.0-1.2 on GA media (Moderate)
    2022-01-17
    oval:org.opensuse.security:def:111187
    P
    		Security update for MozillaThunderbird (Important)
    2021-12-29
    oval:org.opensuse.security:def:103004
    P
    		Security update for MozillaThunderbird (Important)
    2021-12-22
    oval:org.opensuse.security:def:119810
    P
    		Security update for MozillaThunderbird (Important)
    2021-12-22
    oval:org.opensuse.security:def:1792
    P
    		Security update for MozillaThunderbird (Important)
    2021-12-22
    oval:org.opensuse.security:def:10707
    P
    		Security update for MozillaThunderbird (Important)
    2021-12-22
    oval:org.opensuse.security:def:70810
    P
    		Security update for MozillaThunderbird (Important)
    2021-12-22
    oval:org.opensuse.security:def:109670
    P
    		Security update for MozillaThunderbird (Important)
    2021-12-22
    oval:org.opensuse.security:def:6276
    P
    		Security update for MozillaThunderbird (Important)
    2021-12-22
    oval:org.opensuse.security:def:111845
    P
    		Security update for MozillaThunderbird (Important)
    2021-12-22
    oval:org.opensuse.security:def:70847
    P
    		Security update for MozillaThunderbird (Important)
    2021-12-22
    oval:org.opensuse.security:def:102344
    P
    		Security update for MozillaThunderbird (Important)
    2021-12-22
    oval:org.opensuse.security:def:67365
    P
    		Security update for MozillaThunderbird (Important)
    2021-12-22
    oval:org.opensuse.security:def:96332
    P
    		Security update for MozillaThunderbird (Important)
    2021-12-22
    oval:org.opensuse.security:def:76433
    P
    		Security update for MozillaThunderbird (Important)
    2021-12-22
    oval:org.opensuse.security:def:10670
    P
    		Security update for MozillaThunderbird (Important)
    2021-12-22
    oval:org.opensuse.security:def:99152
    P
    		 (Moderate)
    2021-10-20
    oval:org.opensuse.security:def:41166
    P
    		Security update for MozillaFirefox, rust-cbindgen (Important)
    2021-10-18
    oval:org.opensuse.security:def:111089
    P
    		Security update for MozillaFirefox (Important)
    2021-10-18
    oval:org.opensuse.security:def:43099
    P
    		Security update for MozillaFirefox, rust-cbindgen (Important)
    2021-10-18
    oval:org.opensuse.security:def:39960
    P
    		Security update for MozillaFirefox, rust-cbindgen (Important)
    2021-10-18
    oval:org.opensuse.security:def:45596
    P
    		Security update for MozillaFirefox, rust-cbindgen (Important)
    2021-10-18
    oval:org.opensuse.security:def:38669
    P
    		Security update for MozillaFirefox, rust-cbindgen (Important)
    2021-10-18
    oval:org.opensuse.security:def:44390
    P
    		Security update for MozillaFirefox, rust-cbindgen (Important)
    2021-10-18
    oval:org.opensuse.security:def:65250
    P
    		Security update for MozillaFirefox (Important)
    2021-10-16
    oval:org.opensuse.security:def:111749
    P
    		Security update for MozillaFirefox (Important)
    2021-10-16
    oval:org.opensuse.security:def:4226
    P
    		Security update for MozillaFirefox (Important)
    2021-10-16
    oval:org.opensuse.security:def:101730
    P
    		Security update for MozillaFirefox (Important)
    2021-10-16
    oval:org.opensuse.security:def:67291
    P
    		Security update for MozillaFirefox (Important)
    2021-10-16
    oval:org.opensuse.security:def:74318
    P
    		Security update for MozillaFirefox (Important)
    2021-10-16
    oval:org.opensuse.security:def:101519
    P
    		Security update for MozillaFirefox (Important)
    2021-10-16
    oval:org.opensuse.security:def:65315
    P
    		Security update for MozillaFirefox (Important)
    2021-10-16
    oval:org.opensuse.security:def:76359
    P
    		Security update for MozillaFirefox (Important)
    2021-10-16
    oval:org.opensuse.security:def:74383
    P
    		Security update for MozillaFirefox (Important)
    2021-10-16
    oval:org.opensuse.security:def:108185
    P
    		Security update for MozillaFirefox (Important)
    2021-10-16
    oval:org.opensuse.security:def:117699
    P
    		Security update for MozillaFirefox (Important)
    2021-10-16
    oval:org.opensuse.security:def:1039
    P
    		Security update for MozillaFirefox (Important)
    2021-10-16
    oval:org.opensuse.security:def:4161
    P
    		Security update for MozillaFirefox (Important)
    2021-10-16
    oval:org.opensuse.security:def:76009
    P
    		Security update for MozillaFirefox (Important)
    2021-10-11
    oval:org.opensuse.security:def:70487
    P
    		Security update for MozillaFirefox (Important)
    2021-10-11
    oval:org.opensuse.security:def:108779
    P
    		Security update for MozillaFirefox (Important)
    2021-10-11
    oval:org.opensuse.security:def:9796
    P
    		Security update for MozillaFirefox (Important)
    2021-10-11
    oval:org.opensuse.security:def:67282
    P
    		Security update for MozillaFirefox (Important)
    2021-10-11
    oval:org.opensuse.security:def:105647
    P
    		Security update for MozillaFirefox (Important)
    2021-10-11
    oval:org.opensuse.security:def:92202
    P
    		Security update for MozillaFirefox (Important)
    2021-10-11
    oval:org.opensuse.security:def:69737
    P
    		Security update for MozillaFirefox (Important)
    2021-10-11
    oval:org.opensuse.security:def:106435
    P
    		Security update for MozillaFirefox (Important)
    2021-10-11
    oval:org.opensuse.security:def:9041
    P
    		Security update for MozillaFirefox (Important)
    2021-10-11
    oval:org.opensuse.security:def:76350
    P
    		Security update for MozillaFirefox (Important)
    2021-10-11
    oval:org.opensuse.security:def:10160
    P
    		Security update for MozillaFirefox (Important)
    2021-10-11
    oval:org.opensuse.security:def:99347
    P
    		Security update for MozillaFirefox (Important)
    2021-10-11
    oval:org.opensuse.security:def:105842
    P
    		Security update for MozillaFirefox (Important)
    2021-10-11
    oval:org.opensuse.security:def:92397
    P
    		Security update for MozillaFirefox (Important)
    2021-10-11
    oval:org.opensuse.security:def:69936
    P
    		Security update for MozillaFirefox (Important)
    2021-10-11
    oval:org.opensuse.security:def:106722
    P
    		Security update for MozillaFirefox (Important)
    2021-10-11
    oval:org.opensuse.security:def:9406
    P
    		Security update for MozillaFirefox (Important)
    2021-10-11
    oval:org.opensuse.security:def:5852
    P
    		Security update for MozillaFirefox (Important)
    2021-10-11
    oval:org.opensuse.security:def:10347
    P
    		Security update for MozillaFirefox (Important)
    2021-10-11
    oval:org.opensuse.security:def:99546
    P
    		Security update for MozillaFirefox (Important)
    2021-10-11
    oval:org.opensuse.security:def:106037
    P
    		Security update for MozillaFirefox (Important)
    2021-10-11
    oval:org.opensuse.security:def:8659
    P
    		Security update for MozillaFirefox (Important)
    2021-10-11
    oval:org.opensuse.security:def:92596
    P
    		Security update for MozillaFirefox (Important)
    2021-10-11
    oval:org.opensuse.security:def:70300
    P
    		Security update for MozillaFirefox (Important)
    2021-10-11
    oval:org.opensuse.security:def:102113
    P
    		Security update for MozillaFirefox (Important)
    2021-10-11
    oval:org.opensuse.security:def:9597
    P
    		Security update for MozillaFirefox (Important)
    2021-10-11
    oval:org.opensuse.security:def:66941
    P
    		Security update for MozillaFirefox (Important)
    2021-10-11
    oval:org.opensuse.security:def:98957
    P
    		Security update for MozillaFirefox (Important)
    2021-10-11
    oval:org.opensuse.security:def:92007
    P
    		Security update for MozillaFirefox (Important)
    2021-10-11
    oval:org.opensuse.security:def:69546
    P
    		Security update for MozillaFirefox (Important)
    2021-10-11
    oval:org.opensuse.security:def:106236
    P
    		Security update for MozillaFirefox (Important)
    2021-10-11
    oval:org.opensuse.security:def:8846
    P
    		Security update for MozillaFirefox (Important)
    2021-10-11
    oval:org.opensuse.security:def:111740
    P
    		Security update for MozillaFirefox (Important)
    2021-10-11
    oval:org.opensuse.security:def:92795
    P
    		Security update for MozillaFirefox (Important)
    2021-10-11
    oval:org.opensuse.security:def:105476
    P
    		MozillaFirefox-92.0-1.2 on GA media (Moderate)
    2021-10-01
    oval:org.opensuse.security:def:43092
    P
    		Security update for MozillaFirefox (Important)
    2021-10-01
    oval:org.opensuse.security:def:39952
    P
    		Security update for MozillaFirefox (Important)
    2021-10-01
    oval:org.opensuse.security:def:45591
    P
    		Security update for MozillaFirefox (Important)
    2021-10-01
    oval:org.opensuse.security:def:38662
    P
    		Security update for MozillaFirefox (Important)
    2021-10-01
    oval:org.opensuse.security:def:44382
    P
    		Security update for MozillaFirefox (Important)
    2021-10-01
    oval:org.opensuse.security:def:41161
    P
    		Security update for MozillaFirefox (Important)
    2021-10-01
    oval:org.opensuse.security:def:58832
    P
    		Security update for MozillaFirefox (Important)
    2021-09-22
    oval:org.opensuse.security:def:86650
    P
    		Security update for MozillaFirefox (Important)
    2021-09-22
    oval:org.opensuse.security:def:33720
    P
    		Security update for MozillaFirefox (Important)
    2021-09-22
    oval:org.opensuse.security:def:82632
    P
    		Security update for MozillaFirefox (Important)
    2021-09-22
    oval:org.opensuse.security:def:29425
    P
    		Security update for MozillaFirefox (Important)
    2021-09-22
    oval:org.opensuse.security:def:89198
    P
    		Security update for MozillaFirefox (Important)
    2021-09-22
    oval:org.opensuse.security:def:57093
    P
    		Security update for MozillaFirefox (Important)
    2021-09-22
    oval:org.opensuse.security:def:84670
    P
    		Security update for MozillaFirefox (Important)
    2021-09-22
    oval:org.opensuse.security:def:31684
    P
    		Security update for MozillaFirefox (Important)
    2021-09-22
    oval:org.opensuse.security:def:23672
    P
    		Security update for MozillaFirefox (Important)
    2021-09-22
    oval:org.opensuse.security:def:59543
    P
    		Security update for MozillaFirefox (Important)
    2021-09-22
    oval:org.opensuse.security:def:87473
    P
    		Security update for MozillaFirefox (Important)
    2021-09-22
    oval:org.opensuse.security:def:33978
    P
    		Security update for MozillaFirefox (Important)
    2021-09-22
    oval:org.opensuse.security:def:55248
    P
    		Security update for MozillaFirefox (Important)
    2021-09-22
    oval:org.opensuse.security:def:83336
    P
    		Security update for MozillaFirefox (Important)
    2021-09-22
    oval:org.opensuse.security:def:125607
    P
    		Security update for MozillaFirefox (Important)
    2021-09-22
    oval:org.opensuse.security:def:30129
    P
    		Security update for MozillaFirefox (Important)
    2021-09-22
    oval:org.opensuse.security:def:89456
    P
    		Security update for MozillaFirefox (Important)
    2021-09-22
    oval:org.opensuse.security:def:57507
    P
    		Security update for MozillaFirefox (Important)
    2021-09-22
    oval:org.opensuse.security:def:85734
    P
    		Security update for MozillaFirefox (Important)
    2021-09-22
    oval:org.opensuse.security:def:127171
    P
    		Security update for MozillaFirefox (Important)
    2021-09-22
    oval:org.opensuse.security:def:32186
    P
    		Security update for MozillaFirefox (Important)
    2021-09-22
    oval:org.opensuse.security:def:23974
    P
    		Security update for MozillaFirefox (Important)
    2021-09-22
    oval:org.opensuse.security:def:59801
    P
    		Security update for MozillaFirefox (Important)
    2021-09-22
    oval:org.opensuse.security:def:88194
    P
    		Security update for MozillaFirefox (Important)
    2021-09-22
    oval:org.opensuse.security:def:34544
    P
    		Security update for MozillaFirefox (Important)
    2021-09-22
    oval:org.opensuse.security:def:55952
    P
    		Security update for MozillaFirefox (Important)
    2021-09-22
    oval:org.opensuse.security:def:83456
    P
    		Security update for MozillaFirefox (Important)
    2021-09-22
    oval:org.opensuse.security:def:30249
    P
    		Security update for MozillaFirefox (Important)
    2021-09-22
    oval:org.opensuse.security:def:58009
    P
    		Security update for MozillaFirefox (Important)
    2021-09-22
    oval:org.opensuse.security:def:86148
    P
    		Security update for MozillaFirefox (Important)
    2021-09-22
    oval:org.opensuse.security:def:33009
    P
    		Security update for MozillaFirefox (Important)
    2021-09-22
    oval:org.opensuse.security:def:51660
    P
    		Security update for MozillaFirefox (Important)
    2021-09-22
    oval:org.opensuse.security:def:26132
    P
    		Security update for MozillaFirefox (Important)
    2021-09-22
    oval:org.opensuse.security:def:60367
    P
    		Security update for MozillaFirefox (Important)
    2021-09-22
    oval:org.opensuse.security:def:88510
    P
    		Security update for MozillaFirefox (Important)
    2021-09-22
    oval:org.opensuse.security:def:56072
    P
    		Security update for MozillaFirefox (Important)
    2021-09-22
    oval:org.opensuse.security:def:84212
    P
    		Security update for MozillaFirefox (Important)
    2021-09-22
    oval:org.opensuse.security:def:126774
    P
    		Security update for MozillaFirefox (Important)
    2021-09-22
    oval:org.opensuse.security:def:31270
    P
    		Security update for MozillaFirefox (Important)
    2021-09-22
    oval:org.opensuse.security:def:5119
    P
    		Security update for MozillaFirefox (Important)
    2021-09-22
    BACK
    mozilla firefox *
    mozilla thunderbird *