Vulnerability Monitor

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CVE-2021-23973

When trying to load a cross-origin resource in an audio/video context a decoding error may have resulted, and the content of that error may have revealed information about the resource. This vulnerability affects Firefox < 86, Thunderbird < 78.8, and Firefox ESR < 78.8.

Published

2021-02-26T02:15:13.243

Last Modified

2024-11-21T05:52:07.817

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 6.5 (MEDIUM)

CVSSv2 Vector

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

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

Exploitability Score

8.6

Impact Score

2.9

Weaknesses

Type: Primary
CWE-209

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	mozilla	firefox	< 86.0	Yes
Application	mozilla	firefox_esr	< 78.8	Yes
Application	mozilla	thunderbird	< 78.8	Yes
Operating System	debian	debian_linux	9.0	Yes
Operating System	debian	debian_linux	10.0	Yes

References

https://bugzilla.mozilla.org/show_bug.cgi?id=1690976 Issue Tracking, Permissions Required, Vendor Advisory ([email protected])
https://lists.debian.org/debian-lts-announce/2021/03/msg00000.html Mailing List, Third Party Advisory ([email protected])
https://security.gentoo.org/glsa/202104-09 Third Party Advisory ([email protected])
https://security.gentoo.org/glsa/202104-10 Third Party Advisory ([email protected])
https://www.debian.org/security/2021/dsa-4866 Third Party Advisory ([email protected])
https://www.mozilla.org/security/advisories/mfsa2021-07/ Release Notes, Vendor Advisory ([email protected])
https://www.mozilla.org/security/advisories/mfsa2021-08/ Release Notes, Vendor Advisory ([email protected])
https://www.mozilla.org/security/advisories/mfsa2021-09/ Release Notes, Vendor Advisory ([email protected])
https://bugzilla.mozilla.org/show_bug.cgi?id=1690976 Issue Tracking, Permissions Required, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://lists.debian.org/debian-lts-announce/2021/03/msg00000.html Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://security.gentoo.org/glsa/202104-09 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://security.gentoo.org/glsa/202104-10 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.debian.org/security/2021/dsa-4866 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.mozilla.org/security/advisories/mfsa2021-07/ Release Notes, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.mozilla.org/security/advisories/mfsa2021-08/ Release Notes, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.mozilla.org/security/advisories/mfsa2021-09/ Release Notes, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)