CVE-2021-23987

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2021-23987
Mozilla developers and community members reported memory safety bugs present in Firefox 86 and Firefox ESR 78.8. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox ESR < 78.9, Firefox < 87, and Thunderbird < 78.9.

8.8 /10

CVSS v3 : HIGH

V3 Legend

Vector :

Exploitability : 2.8 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

6.8 /10

CVSS v2.0 : MEDIUM

V2 Legend

Vector : AV:N/AC:M/Au:N/C:P/I:P/A:P

Exploitability : 8.6 / Impact : 6.4

Access Vector NETWORK

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References
Link Resource
https://bugzilla.mozilla.org/buglist.cgi?bug_id=1513519%2C1683439%2C1690169%2C1690718 Issue Tracking Patch Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2021-10/ Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2021-11/ Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2021-12/ Vendor Advisory
Configurations

Configuration 1 (hide)

OR cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*
History

03 May 2022, 16:04

Type Values Removed Values Added
CWE CWE-119 CWE-787

06 Aug 2021, 18:18

Type Values Removed Values Added
References
  • {'url': 'https://security.gentoo.org/glsa/202104-10', 'name': 'GLSA-202104-10', 'tags': ['Third Party Advisory'], 'refsource': 'GENTOO'}
  • {'url': 'https://security.gentoo.org/glsa/202104-09', 'name': 'GLSA-202104-09', 'tags': ['Third Party Advisory'], 'refsource': 'GENTOO'}

24 Jun 2021, 14:15

Type Values Removed Values Added
Summary Mozilla developers and community members reported memory safety bugs present in Firefox 86 and Firefox ESR 78.8. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox ESR < 78.9, Thunderbird < 78.9, and Firefox < 87. Mozilla developers and community members reported memory safety bugs present in Firefox 86 and Firefox ESR 78.8. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox ESR < 78.9, Firefox < 87, and Thunderbird < 78.9.

04 Jun 2021, 18:57

Type Values Removed Values Added
References (GENTOO) https://security.gentoo.org/glsa/202104-10 - (GENTOO) https://security.gentoo.org/glsa/202104-10 - Third Party Advisory
References (MISC) https://bugzilla.mozilla.org/buglist.cgi?bug_id=1513519%2C1683439%2C1690169%2C1690718 - Issue Tracking (MISC) https://bugzilla.mozilla.org/buglist.cgi?bug_id=1513519%2C1683439%2C1690169%2C1690718 - Issue Tracking, Patch, Vendor Advisory
References (GENTOO) https://security.gentoo.org/glsa/202104-09 - (GENTOO) https://security.gentoo.org/glsa/202104-09 - Third Party Advisory

01 May 2021, 02:15

Type Values Removed Values Added
References
  • (GENTOO) https://security.gentoo.org/glsa/202104-09 -
  • (GENTOO) https://security.gentoo.org/glsa/202104-10 -

05 Apr 2021, 14:23

Type Values Removed Values Added
CVSS v2 : unknown
v3 : unknown 		v2 : 6.8
v3 : 8.8
CWE CWE-119
References (MISC) https://www.mozilla.org/security/advisories/mfsa2021-10/ - (MISC) https://www.mozilla.org/security/advisories/mfsa2021-10/ - Vendor Advisory
References (MISC) https://bugzilla.mozilla.org/buglist.cgi?bug_id=1513519%2C1683439%2C1690169%2C1690718 - (MISC) https://bugzilla.mozilla.org/buglist.cgi?bug_id=1513519%2C1683439%2C1690169%2C1690718 - Issue Tracking
References (MISC) https://www.mozilla.org/security/advisories/mfsa2021-11/ - (MISC) https://www.mozilla.org/security/advisories/mfsa2021-11/ - Vendor Advisory
References (MISC) https://www.mozilla.org/security/advisories/mfsa2021-12/ - (MISC) https://www.mozilla.org/security/advisories/mfsa2021-12/ - Vendor Advisory
CPE cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*

31 Mar 2021, 14:48

Type Values Removed Values Added
New CVE
Information

Published : 2021-03-31 14:15

Updated : 2023-12-10 13:55

NVD link : CVE-2021-23987

Mitre link : CVE-2021-23987

CVE.ORG link : CVE-2021-23987

JSON object : View

Products Affected

mozilla

  • firefox_esr
  • firefox
  • thunderbird
CWE
CWE-787

Out-of-bounds Write