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Test ID:1.3.6.1.4.1.25623.1.2.1.2021.38
Category:General
Title:Mozilla Firefox Security Advisory (MFSA2021-38) - Linux
Summary:This host is missing a security update for Mozilla Firefox.
Description:Summary:
This host is missing a security update for Mozilla Firefox.

Vulnerability Insight:
CVE-2021-38491: Mixed-Content-Blocking was unable to check opaque origins
Mixed-content checks were unable to analyze opaque origins which led to some mixed content being loaded.

CVE-2021-38493: Memory safety bugs fixed in Firefox 92, Firefox ESR 78.14 and Firefox ESR 91.1
Mozilla developers Gabriele Svelto and Tyson Smith reported memory safety bugs present in Firefox 91 and Firefox ESR 78.13. 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.

CVE-2021-38494: Memory safety bugs fixed in Firefox 92
Mozilla developers Christian Holler and Lars T Hansen reported memory safety bugs present in Firefox 91. 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.

Affected Software/OS:
Firefox version(s) below 92.

Solution:
The vendor has released an update. Please see the reference(s) for more information.

CVSS Score:
6.8

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

Cross-Ref: Common Vulnerability Exposure (CVE) ID: CVE-2021-38491
https://security.gentoo.org/glsa/202202-03
https://bugzilla.mozilla.org/show_bug.cgi?id=1551886
https://www.mozilla.org/security/advisories/mfsa2021-38/
Common Vulnerability Exposure (CVE) ID: CVE-2021-38493
https://security.gentoo.org/glsa/202208-14
https://bugzilla.mozilla.org/buglist.cgi?bug_id=1723391%2C1724101%2C1724107
https://www.mozilla.org/security/advisories/mfsa2021-39/
https://www.mozilla.org/security/advisories/mfsa2021-42/
Common Vulnerability Exposure (CVE) ID: CVE-2021-38494
https://bugzilla.mozilla.org/buglist.cgi?bug_id=1723920%2C1725638
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