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Mageia: 2020-0090 Moderate: Firefox Memory Safety and Out-of-Bounds Issues

mageia
Calendar Grey February 18, 2020
Dist Mageia Esm H88
Mageia has released an advisory regarding new Firefox packages that address several security vulnerabilities involving memory corruption and cross-site scripting (XSS).
Updated firefox packages fix security vulnerabilities: Due to a missing bounds check on shared memory read in the parent process, a content process could have modified shared memo...

Summary

Updated firefox packages fix security vulnerabilities:
Due to a missing bounds check on shared memory read in the parent process, a content process could have modified shared memory relating to crash reporting information, crash itself, and cause an out-of-bound write. This could have caused memory corruption and a potentially exploitable crash (CVE-2020-6796).
If a template tag was used in a select tag, the parser could be confused and allow JavaScript parsing and execution when it should not be allowed. A site that relied on the browser behaving correctly could suffer a cross-site scripting vulnerability as a result (CVE-2020-6798).
Memory safety bugs present in Firefox ESR 68.4. Some of these bugs showed evidence of memory corruption and presumably some of these could have been exploited to run arbitrary code (CVE-2020-6800).
Also, nspr has been updated to 4.25 and nss to 3.50.0

References

- https://bugs.mageia.org/show_bug.cgi?id=26181

- https://groups.google.com/forum/#!topic/mozilla.dev.tech.nspr/lK7toqtJ96E

- - https://www.mozilla.org/en-US/security/advisories/mfsa2020-06/

- https://www.cve.org/CVERecord?id=CVE-2020-6796

- https://www.cve.org/CVERecord?id=CVE-2020-6798

- https://www.cve.org/CVERecord?id=CVE-2020-6800

Topics%20covered

Topics Covered

security advisory cross-site scripting memory corruption firefox out-of-bounds Mageia

Resolution

SRPMS

- 7/core/nspr-4.25-1.mga7

- 7/core/nss-3.50.0-1.mga7

- 7/core/firefox-68.5.0-1.mga7

- 7/core/firefox-l10n-68.5.0-1.mga7

Publication date: 18 Feb 2020
URL: https://advisories.mageia.org/MGASA-2020-0090.html
Type: security
CVE: CVE-2020-6796, CVE-2020-6798, CVE-2020-6800

Topics%20covered

Topics Covered

security advisory cross-site scripting memory corruption firefox out-of-bounds Mageia

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