Unrated severityNVD Advisory· Published Dec 9, 2020· Updated Aug 4, 2024
CVE-2020-26950
CVE-2020-26950
Description
In 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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
36<78.4.1+ 3 more
- (no CPE)range: <78.4.1
- (no CPE)range: <82.0.3
- (no CPE)range: < 82.0.3
- (no CPE)range: < 78.4.1
<78.4.2+ 1 more
- (no CPE)range: <78.4.2
- (no CPE)range: < 78.4.2
- osv-coords30 versionspkg:rpm/opensuse/firefox-esr&distro=openSUSE%20Tumbleweedpkg:rpm/opensuse/MozillaFirefox&distro=openSUSE%20Leap%2015.1pkg:rpm/opensuse/MozillaFirefox&distro=openSUSE%20Leap%2015.2pkg:rpm/opensuse/MozillaFirefox&distro=openSUSE%20Tumbleweedpkg:rpm/opensuse/MozillaThunderbird&distro=openSUSE%20Leap%2015.1pkg:rpm/opensuse/MozillaThunderbird&distro=openSUSE%20Leap%2015.2pkg:rpm/opensuse/MozillaThunderbird&distro=openSUSE%20Tumbleweedpkg:rpm/suse/MozillaFirefox&distro=HPE%20Helion%20OpenStack%208pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Enterprise%20Storage%205pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Desktop%20Applications%2015%20SP1pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Desktop%20Applications%2015%20SP2pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP4-LTSSpkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP2-BCLpkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP2-LTSSpkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP3-BCLpkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP3-LTSSpkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP4-LTSSpkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP2pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP3pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP4pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP5pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012%20SP5pkg:rpm/suse/MozillaFirefox&distro=SUSE%20OpenStack%20Cloud%207pkg:rpm/suse/MozillaFirefox&distro=SUSE%20OpenStack%20Cloud%208pkg:rpm/suse/MozillaFirefox&distro=SUSE%20OpenStack%20Cloud%209pkg:rpm/suse/MozillaFirefox&distro=SUSE%20OpenStack%20Cloud%20Crowbar%208pkg:rpm/suse/MozillaFirefox&distro=SUSE%20OpenStack%20Cloud%20Crowbar%209pkg:rpm/suse/MozillaThunderbird&distro=SUSE%20Linux%20Enterprise%20Workstation%20Extension%2015%20SP1pkg:rpm/suse/MozillaThunderbird&distro=SUSE%20Linux%20Enterprise%20Workstation%20Extension%2015%20SP2
< 128.5.1-1.1+ 29 more
- (no CPE)range: < 128.5.1-1.1
- (no CPE)range: < 78.4.1-lp151.2.76.1
- (no CPE)range: < 78.4.1-lp152.2.27.1
- (no CPE)range: < 92.0-1.2
- (no CPE)range: < 78.4.2-lp151.2.56.1
- (no CPE)range: < 78.4.2-lp152.2.16.1
- (no CPE)range: < 91.1.1-1.1
- (no CPE)range: < 78.4.1-112.32.1
- (no CPE)range: < 78.4.1-112.32.1
- (no CPE)range: < 78.4.1-3.116.1
- (no CPE)range: < 78.4.1-8.14.1
- (no CPE)range: < 78.4.1-78.102.1
- (no CPE)range: < 78.4.1-112.32.1
- (no CPE)range: < 78.4.1-112.32.1
- (no CPE)range: < 78.4.1-112.32.1
- (no CPE)range: < 78.4.1-112.32.1
- (no CPE)range: < 78.4.1-112.32.1
- (no CPE)range: < 78.4.1-112.32.1
- (no CPE)range: < 78.4.1-112.32.1
- (no CPE)range: < 78.4.1-112.32.1
- (no CPE)range: < 78.4.1-112.32.1
- (no CPE)range: < 78.4.1-112.32.1
- (no CPE)range: < 78.4.1-112.32.1
- (no CPE)range: < 78.4.1-112.32.1
- (no CPE)range: < 78.4.1-112.32.1
- (no CPE)range: < 78.4.1-112.32.1
- (no CPE)range: < 78.4.1-112.32.1
- (no CPE)range: < 78.4.1-112.32.1
- (no CPE)range: < 78.4.2-3.103.2
- (no CPE)range: < 78.4.2-3.103.2
Patches
Vulnerability mechanics
References
3- packetstormsecurity.com/files/166175/Firefox-MCallGetProperty-Write-Side-Effects-Use-After-Free.htmlmitrex_refsource_MISC
- bugzilla.mozilla.org/show_bug.cgimitrex_refsource_MISC
- www.mozilla.org/security/advisories/mfsa2020-49/mitrex_refsource_CONFIRM
News mentions
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