CVE-2021-38492

medium

Description

When delegating navigations to the operating system, Firefox would accept the `mk` scheme which might allow attackers to launch pages and execute scripts in Internet Explorer in unprivileged mode. *This bug only affects Firefox for Windows. Other operating systems are unaffected.*. This vulnerability affects Firefox < 92, Thunderbird < 91.1, Thunderbird < 78.14, Firefox ESR < 78.14, and Firefox ESR < 91.1.

References

https://www.mozilla.org/security/advisories/mfsa2021-41/

https://www.mozilla.org/security/advisories/mfsa2021-40/

https://www.mozilla.org/security/advisories/mfsa2021-42/

https://www.mozilla.org/security/advisories/mfsa2021-38/

https://www.mozilla.org/security/advisories/mfsa2021-39/

https://bugzilla.mozilla.org/show_bug.cgi?id=1721107

https://security.gentoo.org/glsa/202208-14

Details

Source: MITRE

Published: 2021-11-03

Updated: 2022-08-10

Risk Information

CVSS v2

Base Score: 4.3

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

Impact Score: 2.9

Exploitability Score: 8.6

Severity: MEDIUM

CVSS v3

Base Score: 6.5

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

Impact Score: 3.6

Exploitability Score: 2.8

Severity: MEDIUM