CVE-2020-26950

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Summary

CVECVE-2020-26950
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2020-12-09 01:15:00 UTC
Updated2022-04-08 11:28:00 UTC
DescriptionIn certain circumstances, the MCallGetProperty opcode can be emitted with unmet assumptions resulting in an exploitable use-after-free condition. This vulnerability affects Firefox < 82.0.3, Firefox ESR < 78.4.1, and Thunderbird < 78.4.2.

Risk And Classification

Problem Types: CWE-416

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 82.0.3, Firefox ESR 78.4.1, and Thunderbird 78.4.2 — Mozilla CONFIRM www.mozilla.org Vendor Advisory
Access Denied MISC bugzilla.mozilla.org Issue Tracking, Permissions Required, Vendor Advisory
Firefox MCallGetProperty Write Side Effects Use-After-Free ≈ Packet Storm MISC packetstormsecurity.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Legacy QID Mappings

  • 296065 Oracle Solaris 11.4 Support Repository Update (SRU) 39.107.1 Missing (CPUOCT2021)
  • 296070 Oracle Solaris 11.4 Support Repository Update (SRU) 28.82.3 Missing (CPUOCT2020)
  • 376948 Alibaba Cloud Linux Security Update for firefox (ALINUX2-SA-2020:0188)
  • 500937 Alpine Linux Security Update for firefox-esr
  • 500956 Alpine Linux Security Update for firefox
  • 501620 Alpine Linux Security Update for mozjs78
  • 502376 Alpine Linux Security Update for thunderbird
  • 503841 Alpine Linux Security Update for firefox
  • 504804 Alpine Linux Security Update for firefox-esr
  • 505444 Alpine Linux Security Update for thunderbird
  • 750527 OpenSUSE Security Update for MozillaThunderbird (openSUSE-SU-2020:2133-1)
  • 750571 OpenSUSE Security Update for MozillaThunderbird (openSUSE-SU-2020:2022-1)
  • 750601 OpenSUSE Security Update for MozillaFirefox (openSUSE-SU-2020:1919-1)
  • 750607 OpenSUSE Security Update for MozillaFirefox (openSUSE-SU-2020:1909-1)
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