CVE-2021-29982

CVSS V2 Medium 4.3 CVSS V3 Medium 6.5
Description
Due to incorrect JIT optimization, we incorrectly interpreted data from the wrong type of object, resulting in the potential leak of a single bit of memory. This vulnerability affects Firefox < 91 and Thunderbird < 91.
Overview
  • CVE ID
  • CVE-2021-29982
  • Assigner
  • security@mozilla.org
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2021-08-17T20:15:07
  • Last Modified Date
  • 2022-03-16T14:58:25
Weakness Enumerations
CWE URL
CWE-772 http://cwe.mitre.org/data/definitions/772.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* 1 OR 91.0
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:* 1 OR 91.0
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:N/AC:M/Au:N/C:P/I:N/A:N
  • Access Vector
  • NETWORK
  • Access Compatibility
  • MEDIUM
  • Authentication
  • NONE
  • Confidentiality Impact
  • PARTIAL
  • Integrity Impact
  • NONE
  • Availability Impact
  • NONE
  • Base Score
  • 4.3
  • Severity
  • MEDIUM
  • Exploitability Score
  • 8.6
  • Impact Score
  • 2.9
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
  • Attack Vector
  • NETWORK
  • Attack Compatibility
  • LOW
  • Privileges Required
  • NONE
  • User Interaction
  • REQUIRED
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • HIGH
  • Availability Impact
  • NONE
  • Base Score
  • 6.5
  • Base Severity
  • MEDIUM
  • Exploitability Score
  • 2.8
  • Impact Score
  • 3.6
References
Reference URL Reference Tags
https://www.mozilla.org/security/advisories/mfsa2021-33/ Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2021-36/ Vendor Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1715318 Exploit Issue Tracking Vendor Advisory
https://security.gentoo.org/glsa/202202-03 Third Party Advisory
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2021-29982
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-29982
History
Created Old Value New Value Data Type Notes
2022-05-10 15:45:45 Added to TrackCVE
2022-12-05 08:25:51 2021-08-17T20:15Z 2021-08-17T20:15:07 CVE Published Date updated
2022-12-05 08:25:51 2022-03-16T14:58:25 CVE Modified Date updated
2022-12-05 08:25:51 Analyzed Vulnerability Status updated