Medium severity6.5NVD Advisory· Published Jul 9, 2020· Updated Jun 17, 2026

CVE-2020-12418

Description

Manipulating individual parts of a URL object could have caused an out-of-bounds read, leaking process memory to malicious JavaScript. This vulnerability affects Firefox ESR < 68.10, Firefox < 78, and Thunderbird < 68.10.0.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

Mozilla Corporation/Firefox5 versions
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*+ 4 more
- cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*range: <78.0
- cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*range: <68.10
- (no CPE)range: <68.10
- (no CPE)range: unspecified
- (no CPE)range: unspecified
Mozilla Corporation/Thunderbird3 versions
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*+ 2 more
- cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*range: <68.10.0
- (no CPE)range: <68.10.0
- (no CPE)range: unspecified
Canonical/Ubuntu Linux4 versions
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:*+ 3 more
- cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:19.10:*:*:*:*:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:*
OpenSUSE/Leap2 versions
cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*
- cpe:2.3:o:opensuse:leap:15.2:*:*:*:*:*:*:*
osv-coords50 versions
pkg:rpm/opensuse/MozillaFirefox&distro=openSUSE%20Leap%2015.1 pkg:rpm/opensuse/MozillaFirefox&distro=openSUSE%20Leap%2015.2 pkg:rpm/opensuse/MozillaFirefox&distro=openSUSE%20Tumbleweed pkg:rpm/opensuse/MozillaThunderbird&distro=openSUSE%20Leap%2015.1 pkg:rpm/opensuse/MozillaThunderbird&distro=openSUSE%20Leap%2015.2 pkg:rpm/opensuse/MozillaThunderbird&distro=openSUSE%20Tumbleweed pkg:rpm/opensuse/firefox-esr&distro=openSUSE%20Tumbleweed pkg:rpm/suse/MozillaFirefox&distro=HPE%20Helion%20OpenStack%208 pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Enterprise%20Storage%205 pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Desktop%20Applications%2015%20SP1 pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Desktop%20Applications%2015%20SP2 pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP4-LTSS pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP2-BCL pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP2-LTSS pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP3-BCL pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP3-LTSS pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP4-LTSS pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5 pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP2 pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP3 pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP4 pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP5 pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012%20SP5 pkg:rpm/suse/MozillaFirefox&distro=SUSE%20OpenStack%20Cloud%207 pkg:rpm/suse/MozillaFirefox&distro=SUSE%20OpenStack%20Cloud%208 pkg:rpm/suse/MozillaFirefox&distro=SUSE%20OpenStack%20Cloud%209 pkg:rpm/suse/MozillaFirefox&distro=SUSE%20OpenStack%20Cloud%20Crowbar%208 pkg:rpm/suse/MozillaFirefox&distro=SUSE%20OpenStack%20Cloud%20Crowbar%209 pkg:rpm/suse/MozillaFirefox-branding-SLE&distro=HPE%20Helion%20OpenStack%208 pkg:rpm/suse/MozillaFirefox-branding-SLE&distro=SUSE%20Enterprise%20Storage%205 pkg:rpm/suse/MozillaFirefox-branding-SLE&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Desktop%20Applications%2015%20SP1 pkg:rpm/suse/MozillaFirefox-branding-SLE&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Desktop%20Applications%2015%20SP2 pkg:rpm/suse/MozillaFirefox-branding-SLE&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP2-BCL pkg:rpm/suse/MozillaFirefox-branding-SLE&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP2-LTSS pkg:rpm/suse/MozillaFirefox-branding-SLE&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP3-BCL pkg:rpm/suse/MozillaFirefox-branding-SLE&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP3-LTSS pkg:rpm/suse/MozillaFirefox-branding-SLE&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP4-LTSS pkg:rpm/suse/MozillaFirefox-branding-SLE&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5 pkg:rpm/suse/MozillaFirefox-branding-SLE&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP2 pkg:rpm/suse/MozillaFirefox-branding-SLE&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP3 pkg:rpm/suse/MozillaFirefox-branding-SLE&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP4 pkg:rpm/suse/MozillaFirefox-branding-SLE&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP5 pkg:rpm/suse/MozillaFirefox-branding-SLE&distro=SUSE%20OpenStack%20Cloud%207 pkg:rpm/suse/MozillaFirefox-branding-SLE&distro=SUSE%20OpenStack%20Cloud%208 pkg:rpm/suse/MozillaFirefox-branding-SLE&distro=SUSE%20OpenStack%20Cloud%209 pkg:rpm/suse/MozillaFirefox-branding-SLE&distro=SUSE%20OpenStack%20Cloud%20Crowbar%208 pkg:rpm/suse/MozillaFirefox-branding-SLE&distro=SUSE%20OpenStack%20Cloud%20Crowbar%209 pkg:rpm/suse/MozillaFirefox-branding-SLED&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP4-LTSS pkg:rpm/suse/MozillaThunderbird&distro=SUSE%20Linux%20Enterprise%20Workstation%20Extension%2015%20SP1 pkg:rpm/suse/MozillaThunderbird&distro=SUSE%20Linux%20Enterprise%20Workstation%20Extension%2015%20SP2
< 78.0.1-lp151.2.53.1+ 49 more
- (no CPE)range: < 78.0.1-lp151.2.53.1
- (no CPE)range: < 78.0.1-lp152.2.5.1
- (no CPE)range: < 92.0-1.2
- (no CPE)range: < 68.10.0-lp151.2.44.2
- (no CPE)range: < 68.10.0-lp152.2.4.1
- (no CPE)range: < 91.1.1-1.1
- (no CPE)range: < 128.5.1-1.1
- (no CPE)range: < 78.0.1-112.3.1
- (no CPE)range: < 78.0.1-112.3.1
- (no CPE)range: < 78.0.1-3.94.2
- (no CPE)range: < 78.0.1-3.94.2
- (no CPE)range: < 78.0.1-78.80.2
- (no CPE)range: < 78.0.1-112.3.1
- (no CPE)range: < 78.0.1-112.3.1
- (no CPE)range: < 78.0.1-112.3.1
- (no CPE)range: < 78.0.1-112.3.1
- (no CPE)range: < 78.0.1-112.3.1
- (no CPE)range: < 78.0.1-112.3.1
- (no CPE)range: < 78.0.1-112.3.1
- (no CPE)range: < 78.0.1-112.3.1
- (no CPE)range: < 78.0.1-112.3.1
- (no CPE)range: < 78.0.1-112.3.1
- (no CPE)range: < 78.0.1-112.3.1
- (no CPE)range: < 78.0.1-112.3.1
- (no CPE)range: < 78.0.1-112.3.1
- (no CPE)range: < 78.0.1-112.3.1
- (no CPE)range: < 78.0.1-112.3.1
- (no CPE)range: < 78.0.1-112.3.1
- (no CPE)range: < 78-35.3.1
- (no CPE)range: < 78-35.3.1
- (no CPE)range: < 78-4.14.1
- (no CPE)range: < 78-4.14.1
- (no CPE)range: < 78-35.3.1
- (no CPE)range: < 78-35.3.1
- (no CPE)range: < 78-35.3.1
- (no CPE)range: < 78-35.3.1
- (no CPE)range: < 78-35.3.1
- (no CPE)range: < 78-35.3.1
- (no CPE)range: < 78-35.3.1
- (no CPE)range: < 78-35.3.1
- (no CPE)range: < 78-35.3.1
- (no CPE)range: < 78-35.3.1
- (no CPE)range: < 78-35.3.1
- (no CPE)range: < 78-35.3.1
- (no CPE)range: < 78-35.3.1
- (no CPE)range: < 78-35.3.1
- (no CPE)range: < 78-35.3.1
- (no CPE)range: < 78-21.12.1
- (no CPE)range: < 68.10.0-3.88.1
- (no CPE)range: < 68.10.0-3.88.1

Patches

Vulnerability mechanics

References

lists.opensuse.org/opensuse-security-announce/2020-07/msg00023.htmlnvdMailing ListThird Party Advisory
lists.opensuse.org/opensuse-security-announce/2020-07/msg00026.htmlnvdMailing ListThird Party Advisory
lists.opensuse.org/opensuse-security-announce/2020-07/msg00027.htmlnvdMailing ListThird Party Advisory
lists.opensuse.org/opensuse-security-announce/2020-07/msg00049.htmlnvdMailing ListThird Party Advisory
bugzilla.mozilla.org/show_bug.cginvdIssue TrackingPermissions RequiredVendor Advisory
security.gentoo.org/glsa/202007-09nvdThird Party Advisory
security.gentoo.org/glsa/202007-10nvdThird Party Advisory
usn.ubuntu.com/4421-1/nvdThird Party Advisory
www.mozilla.org/security/advisories/mfsa2020-24/nvdVendor Advisory
www.mozilla.org/security/advisories/mfsa2020-25/nvdVendor Advisory
www.mozilla.org/security/advisories/mfsa2020-26/nvdVendor Advisory

News mentions

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exploit	0.000
kev	0.000
patch	0.000
ransomware	0.000