CVE-2020-26974

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Summary

CVECVE-2020-26974
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2021-01-07 14:15:00 UTC
Updated2021-01-12 14:56:00 UTC
DescriptionWhen flex-basis was used on a table wrapper, a StyleGenericFlexBasis object could have been incorrectly cast to the wrong type. This resulted in a heap user-after-free, memory corruption, and a potentially exploitable crash. This vulnerability affects Firefox < 84, Thunderbird < 78.6, and Firefox ESR < 78.6.

Risk And Classification

Problem Types: CWE-787

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Mozilla Firefox All All All All
Application Mozilla Firefox All All All All
Application Mozilla Firefox Esr All All All All
Application Mozilla Firefox Esr All All All All
Application Mozilla Thunderbird All All All All
Application Mozilla Thunderbird All All All All

References

ReferenceSourceLinkTags
Security Vulnerabilities fixed in Firefox ESR 78.6 — Mozilla MISC www.mozilla.org Vendor Advisory
Security Vulnerabilities fixed in Firefox 84 — Mozilla MISC www.mozilla.org Vendor Advisory
Access Denied MISC bugzilla.mozilla.org Permissions Required
Security Vulnerabilities fixed in Thunderbird 78.6 — Mozilla MISC www.mozilla.org Vendor Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Legacy QID Mappings

  • 159685 Oracle Enterprise Linux Security Update for firefox (ELSA-2020-5561-1)
  • 159687 Oracle Enterprise Linux Security Update for firefox (ELSA-2020-5562-1)
  • 500938 Alpine Linux Security Update for firefox-esr
  • 500958 Alpine Linux Security Update for firefox
  • 502377 Alpine Linux Security Update for thunderbird
  • 503843 Alpine Linux Security Update for firefox
  • 750467 OpenSUSE Security Update for MozillaFirefox (openSUSE-SU-2020:2325-1)
  • 750468 OpenSUSE Security Update for MozillaThunderbird (openSUSE-SU-2020:2324-1)
  • 750469 OpenSUSE Security Update for MozillaThunderbird (openSUSE-SU-2020:2317-1)
  • 750470 OpenSUSE Security Update for MozillaFirefox (openSUSE-SU-2020:2318-1)
  • 750471 OpenSUSE Security Update for MozillaThunderbird (openSUSE-SU-2020:2317-1)
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