Medium severity5.9NVD Advisory· Published Apr 26, 2019· Updated Jun 17, 2026
CVE-2019-9793
CVE-2019-9793
Description
A mechanism was discovered that removes some bounds checking for string, array, or typed array accesses if Spectre mitigations have been disabled. This vulnerability could allow an attacker to create an arbitrary value in compiled JavaScript, for which the range analysis will infer a fully controlled, incorrect range in circumstances where users have explicitly disabled Spectre mitigations. *Note: Spectre mitigations are currently enabled for all users by default settings.*. This vulnerability affects Thunderbird < 60.6, Firefox ESR < 60.6, and Firefox < 66.
AI Insight
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Affected products
31unspecified+ 4 more
- (no CPE)range: unspecified
- (no CPE)range: unspecified
- (no CPE)range: <60.6
- cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*range: <66.0
- cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*range: <60.6
- osv-coords23 versionspkg:rpm/opensuse/MozillaThunderbird&distro=openSUSE%20Leap%2015.0pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012%20SP3pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012%20SP4pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP3pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Enterprise%20Storage%204pkg:rpm/suse/MozillaThunderbird&distro=SUSE%20Linux%20Enterprise%20Workstation%20Extension%2015pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP1pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP2-BCLpkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP4pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%2012-LTSSpkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP1-LTSSpkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP3pkg:rpm/opensuse/firefox-esr&distro=openSUSE%20Tumbleweedpkg:rpm/suse/MozillaThunderbird&distro=SUSE%20Package%20Hub%2012pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP4pkg:rpm/suse/MozillaFirefox&distro=SUSE%20OpenStack%20Cloud%207pkg:rpm/opensuse/MozillaFirefox&distro=openSUSE%20Tumbleweedpkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Desktop%2012%20SP4pkg:rpm/opensuse/MozillaFirefox&distro=openSUSE%20Leap%2015.0pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP2-LTSSpkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Desktop%20Applications%2015pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Desktop%2012%20SP3pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP2
< 60.6.1-lp150.3.37.1+ 22 more
- (no CPE)range: < 60.6.1-lp150.3.37.1
- (no CPE)range: < 60.6.1esr-109.63.2
- (no CPE)range: < 60.6.1esr-109.63.2
- (no CPE)range: < 60.6.1esr-109.63.2
- (no CPE)range: < 60.6.1esr-109.63.2
- (no CPE)range: < 60.6.1-3.28.1
- (no CPE)range: < 60.6.1esr-109.63.2
- (no CPE)range: < 60.6.1esr-109.63.2
- (no CPE)range: < 60.6.1esr-109.63.2
- (no CPE)range: < 60.6.1esr-109.63.2
- (no CPE)range: < 60.6.1esr-109.63.2
- (no CPE)range: < 60.6.1esr-109.63.2
- (no CPE)range: < 128.5.1-1.1
- (no CPE)range: < 60.6.1-82.1
- (no CPE)range: < 60.6.1esr-109.63.2
- (no CPE)range: < 60.6.1esr-109.63.2
- (no CPE)range: < 92.0-1.2
- (no CPE)range: < 60.6.1esr-109.63.2
- (no CPE)range: < 60.6.1-lp150.3.45.1
- (no CPE)range: < 60.6.1esr-109.63.2
- (no CPE)range: < 60.6.1-3.29.3
- (no CPE)range: < 60.6.1esr-109.63.2
- (no CPE)range: < 60.6.1esr-109.63.2
unspecified+ 2 more
- (no CPE)range: unspecified
- (no CPE)range: <60.6
- cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*range: <60.6
Patches
Vulnerability mechanics
References
6- bugzilla.mozilla.org/show_bug.cginvdIssue TrackingPermissions RequiredVendor Advisory
- www.mozilla.org/security/advisories/mfsa2019-07/nvdVendor Advisory
- www.mozilla.org/security/advisories/mfsa2019-08/nvdVendor Advisory
- www.mozilla.org/security/advisories/mfsa2019-11/nvdVendor Advisory
- access.redhat.com/errata/RHSA-2019:0966nvd
- access.redhat.com/errata/RHSA-2019:1144nvd
News mentions
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