CVE-2018-18505
UnknownEPSS 4.54%
Last modified
CVE-2018-18505 is a vulnerability of currently unknown severity. An earlier fix for an Inter-process Communication (IPC) vulnerability, CVE-2011-3079, added authentication to communication between IPC endpoints and server parents during IPC process creation. This authentication is insufficient for channels created after the IPC process is started, leading to the authentication not being correctly applied to later channels. EPSS estimates a 4.54% chance of exploitation in the next 30 days.
Description
An earlier fix for an Inter-process Communication (IPC) vulnerability, CVE-2011-3079, added authentication to communication between IPC endpoints and server parents during IPC process creation. This authentication is insufficient for channels created after the IPC process is started, leading to the authentication not being correctly applied to later channels. This could allow for a sandbox escape through IPC channels due to lack of message validation in the listener process. This vulnerability affects Thunderbird < 60.5, Firefox ESR < 60.5, and Firefox < 65.
Metrics
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Mozilla | Firefox | < 60.5.0 |
| Mozilla | Firefox | < 65.0 |
| Mozilla | Thunderbird | < 60.5.0 |
| Canonical | Ubuntu Linux | 14.04 |
| Canonical | Ubuntu Linux | 16.04 |
| Canonical | Ubuntu Linux | 18.04 |
| Canonical | Ubuntu Linux | 18.10 |
| Debian | Debian Linux | 8.0 |
| Debian | Debian Linux | 9.0 |
| 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 | 7.6 |
| Redhat | Enterprise Linux Server Tus | 7.6 |
| Redhat | Enterprise Linux Workstation | 6.0 |
| Redhat | Enterprise Linux Workstation | 7.0 |
References
- http://www.securityfocus.com/bid/106781Third Party Advisory, VDB Entry
- https://access.redhat.com/errata/RHSA-2019:0218Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:0219Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:0269Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:0270Third Party Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1087565Issue Tracking, Patch, Vendor Advisory
- https://lists.debian.org/debian-lts-announce/2019/01/msg00025.htmlMailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2019/02/msg00024.htmlMailing List, Third Party Advisory
- https://security.gentoo.org/glsa/201903-04Third Party Advisory
- https://security.gentoo.org/glsa/201904-07Third Party Advisory
- https://usn.ubuntu.com/3874-1/Third Party Advisory
- https://usn.ubuntu.com/3897-1/Third Party Advisory
- https://www.debian.org/security/2019/dsa-4376Third Party Advisory
- https://www.debian.org/security/2019/dsa-4392Third Party Advisory
- https://www.mozilla.org/security/advisories/mfsa2019-01/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2019-02/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2019-03/Vendor Advisory
- http://www.securityfocus.com/bid/106781Third Party Advisory, VDB Entry
- https://access.redhat.com/errata/RHSA-2019:0218Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:0219Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:0269Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:0270Third Party Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1087565Issue Tracking, Patch, Vendor Advisory
- https://lists.debian.org/debian-lts-announce/2019/01/msg00025.htmlMailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2019/02/msg00024.htmlMailing List, Third Party Advisory
- https://security.gentoo.org/glsa/201903-04Third Party Advisory
- https://security.gentoo.org/glsa/201904-07Third Party Advisory
- https://usn.ubuntu.com/3874-1/Third Party Advisory
- https://usn.ubuntu.com/3897-1/Third Party Advisory
- https://www.debian.org/security/2019/dsa-4376Third Party Advisory
- https://www.debian.org/security/2019/dsa-4392Third Party Advisory
- https://www.mozilla.org/security/advisories/mfsa2019-01/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2019-02/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2019-03/Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2018-18505?
An earlier fix for an Inter-process Communication (IPC) vulnerability, CVE-2011-3079, added authentication to communication between IPC endpoints and server parents during IPC process creation. This authentication is insufficient for channels created after the IPC process is started, leading to the authentication not being correctly applied to later channels. This could allow for a sandbox escape through IPC channels due to lack of message validation in the listener process. This vulnerability affects Thunderbird < 60.5, Firefox ESR < 60.5, and Firefox < 65.
How severe is CVE-2018-18505?
Severity scoring for CVE-2018-18505 is pending analysis. The EPSS model estimates a 4.54% probability of exploitation in the next 30 days.
How do I fix CVE-2018-18505?
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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