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CVE-2018-18505

10.0 · CRITICAL

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.

Published Feb 5, 2019CWE-287EPSS 4.42%

Overview

CVE-2018-18505 is a critical-severity vulnerability. It was published on February 5, 2019 and has a CVSS 3.0 base score of 10.0 (CRITICAL).

This vulnerability has a CVSS 3.0 base score of 10.0, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Reflists.opensuse.org/opensuse-security-announce/2019-07/msg00021.htmlRefwww.securityfocus.com/bid/106781Refaccess.redhat.com/errata/RHSA-2019:0218Refaccess.redhat.com/errata/RHSA-2019:0219Refaccess.redhat.com/errata/RHSA-2019:0269Refaccess.redhat.com/errata/RHSA-2019:0270Refbugzilla.mozilla.org/show_bug.cgi?id=1087565Reflists.debian.org/debian-lts-announce/2019/01/msg00025.htmlReflists.debian.org/debian-lts-announce/2019/02/msg00024.htmlRefsecurity.gentoo.org/glsa/201903-04

How CyberStrike helps

Frequently asked questions

What is CVE-2018-18505?

CVE-2018-18505 is a critical-severity vulnerability. It was published on February 5, 2019 and has a CVSS 3.0 base score of 10.0 (CRITICAL).

How severe is CVE-2018-18505?

This vulnerability has a CVSS 3.0 base score of 10.0, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2018-18505?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2018-18505?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2018-18505 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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