CVE-2018-12383
UnknownEPSS 0.46%
Last modified
CVE-2018-12383 is a vulnerability of currently unknown severity. 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. EPSS estimates a 0.46% chance of exploitation in the next 30 days.
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.
Metrics
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Redhat | Enterprise Linux Desktop | 6.0 |
| Redhat | Enterprise Linux Desktop | 7.0 |
| Redhat | Enterprise Linux Server | 6.0 |
| Redhat | Enterprise Linux Server | 7.0 |
| Redhat | Enterprise Linux Server Aus | 7.6 |
| Redhat | Enterprise Linux Server Eus | 7.5 |
| Redhat | Enterprise Linux Server Eus | 7.6 |
| Redhat | Enterprise Linux Server Tus | 7.6 |
| Redhat | Enterprise Linux Workstation | 6.0 |
| Redhat | Enterprise Linux Workstation | 7.0 |
| Debian | Debian Linux | 8.0 |
| Debian | Debian Linux | 9.0 |
| Canonical | Ubuntu Linux | 14.04 |
| Canonical | Ubuntu Linux | 16.04 |
| Canonical | Ubuntu Linux | 18.04 |
| Mozilla | Firefox | < 62.0 |
| Mozilla | Firefox Esr | < 60.2.1 |
| Mozilla | Thunderbird | < 60.2.1 |
References
- http://www.securityfocus.com/bid/105276Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1041610Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1041701Third Party Advisory, VDB Entry
- https://access.redhat.com/errata/RHSA-2018:2834Third Party Advisory
- https://access.redhat.com/errata/RHSA-2018:2835Third Party Advisory
- https://access.redhat.com/errata/RHSA-2018:3403Third Party Advisory
- https://access.redhat.com/errata/RHSA-2018:3458Third Party Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1475775Exploit, Issue Tracking, Vendor Advisory
- https://lists.debian.org/debian-lts-announce/2018/11/msg00011.htmlMailing List, Third Party Advisory
- https://security.gentoo.org/glsa/201810-01Third Party Advisory
- https://security.gentoo.org/glsa/201811-13Third Party Advisory
- https://usn.ubuntu.com/3761-1/Third Party Advisory
- https://usn.ubuntu.com/3793-1/Third Party Advisory
- https://www.debian.org/security/2018/dsa-4304Third Party Advisory
- https://www.debian.org/security/2018/dsa-4327Third Party Advisory
- https://www.mozilla.org/security/advisories/mfsa2018-20/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2018-23/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2018-25/Vendor Advisory
- http://www.securityfocus.com/bid/105276Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1041610Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1041701Third Party Advisory, VDB Entry
- https://access.redhat.com/errata/RHSA-2018:2834Third Party Advisory
- https://access.redhat.com/errata/RHSA-2018:2835Third Party Advisory
- https://access.redhat.com/errata/RHSA-2018:3403Third Party Advisory
- https://access.redhat.com/errata/RHSA-2018:3458Third Party Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1475775Exploit, Issue Tracking, Vendor Advisory
- https://lists.debian.org/debian-lts-announce/2018/11/msg00011.htmlMailing List, Third Party Advisory
- https://security.gentoo.org/glsa/201810-01Third Party Advisory
- https://security.gentoo.org/glsa/201811-13Third Party Advisory
- https://usn.ubuntu.com/3761-1/Third Party Advisory
- https://usn.ubuntu.com/3793-1/Third Party Advisory
- https://www.debian.org/security/2018/dsa-4304Third Party Advisory
- https://www.debian.org/security/2018/dsa-4327Third Party Advisory
- https://www.mozilla.org/security/advisories/mfsa2018-20/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2018-23/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2018-25/Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2018-12383?
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.
How severe is CVE-2018-12383?
Severity scoring for CVE-2018-12383 is pending analysis. The EPSS model estimates a 0.46% probability of exploitation in the next 30 days.
How do I fix CVE-2018-12383?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2018-12383?
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