Vulnerability Monitor

The vendors, products, and vulnerabilities you care about

CVE-2021-29970

A malicious webpage could have triggered a use-after-free, memory corruption, and a potentially exploitable crash. *This bug could only be triggered when accessibility was enabled.*. This vulnerability affects Thunderbird < 78.12, Firefox ESR < 78.12, and Firefox < 90.

Published

2021-08-05T20:15:08.540

Last Modified

2024-11-21T06:02:05.157

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 8.8 (HIGH)

CVSSv2 Vector

AV:N/AC:H/Au:N/C:P/I:P/A:P

Access Vector: NETWORK
Access Complexity: HIGH
Authentication: NONE
Confidentiality Impact: PARTIAL
Integrity Impact: PARTIAL
Availability Impact: PARTIAL

Exploitability Score

4.9

Impact Score

6.4

Weaknesses

Type: Primary
CWE-416
CWE-787

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	mozilla	firefox	< 90.0	Yes
Application	mozilla	firefox_esr	< 78.12	Yes
Application	mozilla	thunderbird	< 78.12	Yes

References

https://bugzilla.mozilla.org/show_bug.cgi?id=1709976 Exploit, Issue Tracking, Vendor Advisory ([email protected])
https://security.gentoo.org/glsa/202202-03 Third Party Advisory ([email protected])
https://security.gentoo.org/glsa/202208-14 Third Party Advisory ([email protected])
https://www.mozilla.org/security/advisories/mfsa2021-28/ Vendor Advisory ([email protected])
https://www.mozilla.org/security/advisories/mfsa2021-29/ Vendor Advisory ([email protected])
https://www.mozilla.org/security/advisories/mfsa2021-30/ Vendor Advisory ([email protected])
https://bugzilla.mozilla.org/show_bug.cgi?id=1709976 Exploit, Issue Tracking, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://security.gentoo.org/glsa/202202-03 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://security.gentoo.org/glsa/202208-14 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.mozilla.org/security/advisories/mfsa2021-28/ Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.mozilla.org/security/advisories/mfsa2021-29/ Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.mozilla.org/security/advisories/mfsa2021-30/ Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)