High severity7.5NVD Advisory· Published Feb 28, 2019· Updated Jun 17, 2026
CVE-2018-12393
CVE-2018-12393
Description
A potential vulnerability was found in 32-bit builds where an integer overflow during the conversion of scripts to an internal UTF-16 representation could result in allocating a buffer too small for the conversion. This leads to a possible out-of-bounds write. *Note: 64-bit builds are not vulnerable to this issue.*. This vulnerability affects Firefox < 63, Firefox ESR < 60.3, and Thunderbird < 60.3.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
45cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:x86:*+ 4 more
- cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:x86:*range: <63.0
- cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:x86:*range: <60.3
- (no CPE)range: <63
- (no CPE)range: unspecified
- (no CPE)range: unspecified
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:x86:*+ 2 more
- cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:x86:*range: <60.3
- (no CPE)range: <60.3
- (no CPE)range: unspecified
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*+ 3 more
- cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_desktop:6.0:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:o:redhat:enterprise_linux_desktop:6.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_server:6.0:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:o:redhat:enterprise_linux_server:6.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_server_aus:7.6:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_server_eus:7.6:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_server_tus:7.6:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_workstation:6.0:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:o:redhat:enterprise_linux_workstation:6.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:*
- osv-coords22 versionspkg:rpm/opensuse/MozillaFirefox&distro=openSUSE%20Tumbleweedpkg:rpm/opensuse/MozillaThunderbird&distro=openSUSE%20Tumbleweedpkg:rpm/opensuse/firefox-esr&distro=openSUSE%20Tumbleweedpkg:rpm/suse/MozillaFirefox&distro=SUSE%20Enterprise%20Storage%204pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Desktop%2012%20SP3pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Desktop%2012%20SP4pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Desktop%20Applications%2015pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP1-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%20SP3pkg: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%20for%20SAP%20Applications%2012%20SP1pkg: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%20Software%20Development%20Kit%2012%20SP3pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012%20SP4pkg:rpm/suse/MozillaFirefox&distro=SUSE%20OpenStack%20Cloud%207pkg:rpm/suse/MozillaThunderbird&distro=SUSE%20Linux%20Enterprise%20Workstation%20Extension%2015pkg:rpm/suse/MozillaThunderbird&distro=SUSE%20Package%20Hub%2012
< 92.0-1.2+ 21 more
- (no CPE)range: < 92.0-1.2
- (no CPE)range: < 91.1.1-1.1
- (no CPE)range: < 128.5.1-1.1
- (no CPE)range: < 60.3.0-109.50.2
- (no CPE)range: < 60.3.0-109.50.2
- (no CPE)range: < 60.3.0-109.50.2
- (no CPE)range: < 60.3.0-3.17.1
- (no CPE)range: < 60.3.0-109.50.2
- (no CPE)range: < 60.3.0-109.50.2
- (no CPE)range: < 60.3.0-109.50.2
- (no CPE)range: < 60.3.0-109.50.2
- (no CPE)range: < 60.3.0-109.50.2
- (no CPE)range: < 60.3.0-109.50.2
- (no CPE)range: < 60.3.0-109.50.2
- (no CPE)range: < 60.3.0-109.50.2
- (no CPE)range: < 60.3.0-109.50.2
- (no CPE)range: < 60.3.0-109.50.2
- (no CPE)range: < 60.3.0-109.50.2
- (no CPE)range: < 60.3.0-109.50.2
- (no CPE)range: < 60.3.0-109.50.2
- (no CPE)range: < 60.3.0-3.17.2
- (no CPE)range: < 60.3.0-74.2
Patches
Vulnerability mechanics
References
19- www.securityfocus.com/bid/105718nvdThird Party AdvisoryVDB Entry
- www.securityfocus.com/bid/105769nvdThird Party AdvisoryVDB Entry
- www.securitytracker.com/id/1041944nvdThird Party AdvisoryVDB Entry
- access.redhat.com/errata/RHSA-2018:3005nvdThird Party Advisory
- access.redhat.com/errata/RHSA-2018:3006nvdThird Party Advisory
- access.redhat.com/errata/RHSA-2018:3531nvdThird Party Advisory
- access.redhat.com/errata/RHSA-2018:3532nvdThird Party Advisory
- bugzilla.mozilla.org/show_bug.cginvdIssue TrackingPermissions RequiredVendor Advisory
- lists.debian.org/debian-lts-announce/2018/11/msg00008.htmlnvdThird Party Advisory
- lists.debian.org/debian-lts-announce/2018/11/msg00011.htmlnvdThird Party Advisory
- security.gentoo.org/glsa/201811-04nvdThird Party Advisory
- security.gentoo.org/glsa/201811-13nvdThird Party Advisory
- usn.ubuntu.com/3801-1/nvdThird Party Advisory
- usn.ubuntu.com/3868-1/nvdThird Party Advisory
- www.debian.org/security/2018/dsa-4324nvdThird Party Advisory
- www.debian.org/security/2018/dsa-4337nvdThird Party Advisory
- www.mozilla.org/security/advisories/mfsa2018-26/nvdVendor Advisory
- www.mozilla.org/security/advisories/mfsa2018-27/nvdVendor Advisory
- www.mozilla.org/security/advisories/mfsa2018-28/nvdVendor Advisory
News mentions
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