CVE-2020-26951

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Summary

CVECVE-2020-26951
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2020-12-09 01:15:00 UTC
Updated2020-12-09 19:49:00 UTC
DescriptionA parsing and event loading mismatch in Firefox's SVG code could have allowed load events to fire, even after sanitization. An attacker already capable of exploiting an XSS vulnerability in privileged internal pages could have used this attack to bypass our built-in sanitizer. This vulnerability affects Firefox < 83, Firefox ESR < 78.5, and Thunderbird < 78.5.

Risk And Classification

Problem Types: CWE-79

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 Thunderbird 78.5 — Mozilla CONFIRM www.mozilla.org Vendor Advisory
Access Denied MISC bugzilla.mozilla.org Issue Tracking, Permissions Required, Vendor Advisory
Security Vulnerabilities fixed in Firefox ESR 78.5 — Mozilla CONFIRM www.mozilla.org Vendor Advisory
Security Vulnerabilities fixed in Firefox 83 — Mozilla CONFIRM 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

  • 296070 Oracle Solaris 11.4 Support Repository Update (SRU) 28.82.3 Missing (CPUOCT2020)
  • 377210 Alibaba Cloud Linux Security Update for firefox (ALINUX2-SA-2020:0189)
  • 500937 Alpine Linux Security Update for firefox-esr
  • 502376 Alpine Linux Security Update for thunderbird
  • 504804 Alpine Linux Security Update for firefox-esr
  • 505444 Alpine Linux Security Update for thunderbird
  • 750472 OpenSUSE Security Update for MozillaFirefox (openSUSE-SU-2020:2315-1)
  • 750511 OpenSUSE Security Update for MozillaThunderbird (openSUSE-SU-2020:2187-1)
  • 750538 OpenSUSE Security Update for MozillaThunderbird (openSUSE-SU-2020:2096-1)
  • 750563 OpenSUSE Security Update for MozillaFirefox (openSUSE-SU-2020:2031-1)
  • 750570 OpenSUSE Security Update for MozillaFirefox (openSUSE-SU-2020:2020-1)
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