Medium severity5.5NVD Advisory· Published Oct 18, 2018· Updated Jun 17, 2026

CVE-2018-12383

Description

If a user saved passwords before Firefox 58 and then later set a master password, an unencrypted copy of these passwords is still accessible. This is because the older stored password file was not deleted when the data was copied to a new format starting in Firefox 58. The new master password is added only on the new file. This could allow the exposure of stored password data outside of user expectations. This vulnerability affects Firefox < 62, Firefox ESR < 60.2.1, and Thunderbird < 60.2.1.

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: <62.0
- cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*range: <60.2.1
- (no CPE)range: <62
- (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: <60.2.1
- (no CPE)range: <60.2.1
- (no CPE)range: unspecified
Canonical/Ubuntu Linux3 versions
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*+ 2 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:*:*:*
Debian/linux2 versions
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
- cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
Red Hat/Enterprise Linux Desktop2 versions
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:*:*:*:*:*:*:*
Red Hat/Enterprise Linux Server2 versions
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:*:*:*:*:*:*:*
Red Hat/Enterprise Linux Server Aus
cpe:2.3:o:redhat:enterprise_linux_server_aus:7.6:*:*:*:*:*:*:*
Red Hat/Enterprise Linux Eus2 versions
cpe:2.3:o:redhat:enterprise_linux_server_eus:7.5:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:o:redhat:enterprise_linux_server_eus:7.5:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_server_eus:7.6:*:*:*:*:*:*:*
Red Hat/Enterprise Linux Server Tus
cpe:2.3:o:redhat:enterprise_linux_server_tus:7.6:*:*:*:*:*:*:*
Red Hat/Enterprise Linux Workstation2 versions
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-coords75 versions
pkg:rpm/opensuse/MozillaFirefox&distro=openSUSE%20Tumbleweed pkg:rpm/opensuse/MozillaThunderbird&distro=openSUSE%20Tumbleweed pkg:rpm/opensuse/firefox-esr&distro=openSUSE%20Tumbleweed pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Enterprise%20Storage%204 pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Desktop%2012%20SP3 pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Desktop%2012%20SP4 pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Desktop%20Applications%2015 pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP1-LTSS pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP2-LTSS pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP3 pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP4 pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%2012-LTSS pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP1 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%20Software%20Development%20Kit%2012%20SP3 pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012%20SP4 pkg:rpm/suse/MozillaFirefox&distro=SUSE%20OpenStack%20Cloud%207 pkg:rpm/suse/MozillaFirefox-branding-SLE&distro=SUSE%20Enterprise%20Storage%204 pkg:rpm/suse/MozillaFirefox-branding-SLE&distro=SUSE%20Linux%20Enterprise%20Desktop%2012%20SP3 pkg:rpm/suse/MozillaFirefox-branding-SLE&distro=SUSE%20Linux%20Enterprise%20Desktop%2012%20SP4 pkg:rpm/suse/MozillaFirefox-branding-SLE&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Desktop%20Applications%2015 pkg:rpm/suse/MozillaFirefox-branding-SLE&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP1-LTSS 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 pkg:rpm/suse/MozillaFirefox-branding-SLE&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP4 pkg:rpm/suse/MozillaFirefox-branding-SLE&distro=SUSE%20Linux%20Enterprise%20Server%2012-LTSS pkg:rpm/suse/MozillaFirefox-branding-SLE&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP1 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%20OpenStack%20Cloud%207 pkg:rpm/suse/MozillaThunderbird&distro=SUSE%20Linux%20Enterprise%20Workstation%20Extension%2015 pkg:rpm/suse/MozillaThunderbird&distro=SUSE%20Package%20Hub%2012 pkg:rpm/suse/apache2-mod_nss&distro=SUSE%20Enterprise%20Storage%204 pkg:rpm/suse/apache2-mod_nss&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP1-LTSS pkg:rpm/suse/apache2-mod_nss&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP2-LTSS pkg:rpm/suse/apache2-mod_nss&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP3 pkg:rpm/suse/apache2-mod_nss&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP4 pkg:rpm/suse/apache2-mod_nss&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP1 pkg:rpm/suse/apache2-mod_nss&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP2 pkg:rpm/suse/apache2-mod_nss&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP3 pkg:rpm/suse/apache2-mod_nss&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP4 pkg:rpm/suse/apache2-mod_nss&distro=SUSE%20OpenStack%20Cloud%207 pkg:rpm/suse/mozilla-nspr&distro=SUSE%20Enterprise%20Storage%204 pkg:rpm/suse/mozilla-nspr&distro=SUSE%20Linux%20Enterprise%20Desktop%2012%20SP3 pkg:rpm/suse/mozilla-nspr&distro=SUSE%20Linux%20Enterprise%20Desktop%2012%20SP4 pkg:rpm/suse/mozilla-nspr&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP1-LTSS pkg:rpm/suse/mozilla-nspr&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP2-LTSS pkg:rpm/suse/mozilla-nspr&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP3 pkg:rpm/suse/mozilla-nspr&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP4 pkg:rpm/suse/mozilla-nspr&distro=SUSE%20Linux%20Enterprise%20Server%2012-LTSS pkg:rpm/suse/mozilla-nspr&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP1 pkg:rpm/suse/mozilla-nspr&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP2 pkg:rpm/suse/mozilla-nspr&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP3 pkg:rpm/suse/mozilla-nspr&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP4 pkg:rpm/suse/mozilla-nspr&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012%20SP3 pkg:rpm/suse/mozilla-nspr&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012%20SP4 pkg:rpm/suse/mozilla-nspr&distro=SUSE%20OpenStack%20Cloud%207 pkg:rpm/suse/mozilla-nss&distro=SUSE%20Enterprise%20Storage%204 pkg:rpm/suse/mozilla-nss&distro=SUSE%20Linux%20Enterprise%20Desktop%2012%20SP3 pkg:rpm/suse/mozilla-nss&distro=SUSE%20Linux%20Enterprise%20Desktop%2012%20SP4 pkg:rpm/suse/mozilla-nss&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP1-LTSS pkg:rpm/suse/mozilla-nss&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP2-LTSS pkg:rpm/suse/mozilla-nss&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP3 pkg:rpm/suse/mozilla-nss&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP4 pkg:rpm/suse/mozilla-nss&distro=SUSE%20Linux%20Enterprise%20Server%2012-LTSS pkg:rpm/suse/mozilla-nss&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP1 pkg:rpm/suse/mozilla-nss&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP2 pkg:rpm/suse/mozilla-nss&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP3 pkg:rpm/suse/mozilla-nss&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP4 pkg:rpm/suse/mozilla-nss&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012%20SP3 pkg:rpm/suse/mozilla-nss&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012%20SP4 pkg:rpm/suse/mozilla-nss&distro=SUSE%20OpenStack%20Cloud%207
< 92.0-1.2+ 74 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: < 60.2.2esr-109.46.1
- (no CPE)range: < 60.2.2esr-109.46.1
- (no CPE)range: < 60.2.2esr-109.46.1
- (no CPE)range: < 60.2.2-3.13.3
- (no CPE)range: < 60.2.2esr-109.46.1
- (no CPE)range: < 60.2.2esr-109.46.1
- (no CPE)range: < 60.2.2esr-109.46.1
- (no CPE)range: < 60.2.2esr-109.46.1
- (no CPE)range: < 60.2.2esr-109.46.1
- (no CPE)range: < 60.2.2esr-109.46.1
- (no CPE)range: < 60.2.2esr-109.46.1
- (no CPE)range: < 60.2.2esr-109.46.1
- (no CPE)range: < 60.2.2esr-109.46.1
- (no CPE)range: < 60.2.2esr-109.46.1
- (no CPE)range: < 60.2.2esr-109.46.1
- (no CPE)range: < 60.2.2esr-109.46.1
- (no CPE)range: < 60-32.3.1
- (no CPE)range: < 60-32.3.1
- (no CPE)range: < 60-32.3.1
- (no CPE)range: < 60-4.5.3
- (no CPE)range: < 60-32.3.1
- (no CPE)range: < 60-32.3.1
- (no CPE)range: < 60-32.3.1
- (no CPE)range: < 60-32.3.1
- (no CPE)range: < 60-32.3.1
- (no CPE)range: < 60-32.3.1
- (no CPE)range: < 60-32.3.1
- (no CPE)range: < 60-32.3.1
- (no CPE)range: < 60-32.3.1
- (no CPE)range: < 60-32.3.1
- (no CPE)range: < 60.2.1-3.13.1
- (no CPE)range: < 60.3.0-74.2
- (no CPE)range: < 1.0.14-19.6.3
- (no CPE)range: < 1.0.14-19.6.3
- (no CPE)range: < 1.0.14-19.6.3
- (no CPE)range: < 1.0.14-19.6.3
- (no CPE)range: < 1.0.14-19.6.3
- (no CPE)range: < 1.0.14-19.6.3
- (no CPE)range: < 1.0.14-19.6.3
- (no CPE)range: < 1.0.14-19.6.3
- (no CPE)range: < 1.0.14-19.6.3
- (no CPE)range: < 1.0.14-19.6.3
- (no CPE)range: < 4.19-19.3.1
- (no CPE)range: < 4.19-19.3.1
- (no CPE)range: < 4.19-19.3.1
- (no CPE)range: < 4.19-19.3.1
- (no CPE)range: < 4.19-19.3.1
- (no CPE)range: < 4.19-19.3.1
- (no CPE)range: < 4.19-19.3.1
- (no CPE)range: < 4.19-19.3.1
- (no CPE)range: < 4.19-19.3.1
- (no CPE)range: < 4.19-19.3.1
- (no CPE)range: < 4.19-19.3.1
- (no CPE)range: < 4.19-19.3.1
- (no CPE)range: < 4.19-19.3.1
- (no CPE)range: < 4.19-19.3.1
- (no CPE)range: < 4.19-19.3.1
- (no CPE)range: < 3.36.4-58.15.3
- (no CPE)range: < 3.36.4-58.15.3
- (no CPE)range: < 3.36.4-58.15.3
- (no CPE)range: < 3.36.4-58.15.3
- (no CPE)range: < 3.36.4-58.15.3
- (no CPE)range: < 3.36.4-58.15.3
- (no CPE)range: < 3.36.4-58.15.3
- (no CPE)range: < 3.36.4-58.15.3
- (no CPE)range: < 3.36.4-58.15.3
- (no CPE)range: < 3.36.4-58.15.3
- (no CPE)range: < 3.36.4-58.15.3
- (no CPE)range: < 3.36.4-58.15.3
- (no CPE)range: < 3.36.4-58.15.3
- (no CPE)range: < 3.36.4-58.15.3
- (no CPE)range: < 3.36.4-58.15.3

Patches

Vulnerability mechanics

References

bugzilla.mozilla.org/show_bug.cginvdExploitIssue TrackingVendor Advisory
www.securityfocus.com/bid/105276nvdThird Party AdvisoryVDB Entry
www.securitytracker.com/id/1041610nvdThird Party AdvisoryVDB Entry
www.securitytracker.com/id/1041701nvdThird Party AdvisoryVDB Entry
access.redhat.com/errata/RHSA-2018:2834nvdThird Party Advisory
access.redhat.com/errata/RHSA-2018:2835nvdThird Party Advisory
access.redhat.com/errata/RHSA-2018:3403nvdThird Party Advisory
access.redhat.com/errata/RHSA-2018:3458nvdThird Party Advisory
lists.debian.org/debian-lts-announce/2018/11/msg00011.htmlnvdMailing ListThird Party Advisory
security.gentoo.org/glsa/201810-01nvdThird Party Advisory
security.gentoo.org/glsa/201811-13nvdThird Party Advisory
usn.ubuntu.com/3761-1/nvdThird Party Advisory
usn.ubuntu.com/3793-1/nvdThird Party Advisory
www.debian.org/security/2018/dsa-4304nvdThird Party Advisory
www.debian.org/security/2018/dsa-4327nvdThird Party Advisory
www.mozilla.org/security/advisories/mfsa2018-20/nvdVendor Advisory
www.mozilla.org/security/advisories/mfsa2018-23/nvdVendor Advisory
www.mozilla.org/security/advisories/mfsa2018-25/nvdVendor Advisory

News mentions

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cvss	0.358
epss	0.000
exploit	0.000
kev	0.000
patch	0.000
ransomware	0.000