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Mageia 8: 2022-0344 Critical Security Advisory for Firefox Exploits

mageia
Calendar Grey September 21, 2022
Dist Mageia Esm H88
The newest security patch for Firefox on Mageia addresses multiple vulnerabilities, enhancing online safety in the face of rising cyber threats.
When injecting an HTML base element, some requests would ignore the CSP's base-uri settings and accept the injected element's base instead (CVE-2022-40956)

Summary

When injecting an HTML base element, some requests would ignore the CSP's base-uri settings and accept the injected element's base instead (CVE-2022-40956).
By injecting a cookie with certain special characters, an attacker on a shared subdomain which is not a secure context could set and thus overwrite cookies from a secure context, leading to session fixation and other attacks (CVE-2022-40958).
During iframe navigation, certain pages did not have their FeaturePolicy fully initialized leading to a bypass that leaked device permissions into untrusted subdocuments (CVE-2022-40959).
Concurrent use of the URL parser with non-UTF-8 data was not thread-safe. This could lead to a use-after-free causing a potentially exploitable crash (CVE-2022-40960).
Mozilla developers Nika Layzell, Timothy Nikkel, Jeff Muizelaar, Sebastian Hengst, Andreas Pehrson, and the Mozilla Fuzzing Team reported memory safety bugs present in Firefox ESR 102.2. Some of these bugs showed evidence of memory corruptio...

Read the Full Advisory

References

- https://bugs.mageia.org/show_bug.cgi?id=30867

- https://groups.google.com/a/mozilla.org/g/dev-tech-crypto/c/K4hptojx5CQ

- https://groups.google.com/a/mozilla.org/g/dev-tech-crypto/c/AZdgucrnRTQ

- https://firefox-source-docs.mozilla.org/security/nss/releases/nss_3_83.html

- https://www.mozilla.org/en-US/security/advisories/mfsa2022-41/

- https://www.cve.org/CVERecord?id=CVE-2022-40956

- https://www.cve.org/CVERecord?id=CVE-2022-40958

- https://www.cve.org/CVERecord?id=CVE-2022-40959

- https://www.cve.org/CVERecord?id=CVE-2022-40960

- https://www.cve.org/CVERecord?id=CVE-2022-40962

Topics%20covered

Topics Covered

security advisory critical web security session fixation memory safety Mageia csp bypass

Resolution

SRPMS

- 8/core/rootcerts-20220907.00-1.mga8

- 8/core/nspr-4.35-1.mga8

- 8/core/nss-3.83.0-1.mga8

- 8/core/firefox-102.3.0-1.mga8

- 8/core/firefox-l10n-102.3.0-1.mga8

Severity
critical
Lowest
Low
Medium
High
Critical

Publication date: 21 Sep 2022
URL: https://advisories.mageia.org/MGASA-2022-0344.html
Type: security
CVE: CVE-2022-40956, CVE-2022-40958, CVE-2022-40959, CVE-2022-40960, CVE-2022-40962

Topics%20covered

Topics Covered

security advisory critical web security session fixation memory safety Mageia csp bypass

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