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

CVE-2018-18505 is fixed in 12 products on 1 platform, first by firefox 65.0+build2-0ubuntu0.18.04.1, released January 29, 2019. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2018-18505
- Priority: Routine
- CVSS: n/a (Medium)
- EPSS: 0.0442
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Jan 29, 2019

## 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.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | firefox Ubuntu 18.04.6 LTS (bionic) | 65.0+build2-0ubuntu0.18.04.1 | [firefox 65.0+build2-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-firefox-65.0-build2-0ubuntu0.18.04.1.md) | Jan 29, 2019 |
| Linux | firefox-globalmenu Ubuntu 18.04.6 LTS (bionic) | 65.0+build2-0ubuntu0.18.04.1 | [firefox-globalmenu 65.0+build2-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-firefox-globalmenu-65.0-build2-0ubuntu0.18.04.1.md) | Jan 29, 2019 |
| Linux | firefox-mozsymbols Ubuntu 18.04.6 LTS (bionic) | 65.0+build2-0ubuntu0.18.04.1 | [firefox-mozsymbols 65.0+build2-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-firefox-mozsymbols-65.0-build2-0ubuntu0.18.04.1.md) | Jan 29, 2019 |
| Linux | firefox-testsuite Ubuntu 18.04.6 LTS (bionic) | 65.0+build2-0ubuntu0.18.04.1 | [firefox-testsuite 65.0+build2-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-firefox-testsuite-65.0-build2-0ubuntu0.18.04.1.md) | Jan 29, 2019 |
| Linux | thunderbird Ubuntu 18.04.6 LTS (bionic) | 1:60.5.1+build2-0ubuntu0.18.04.1 | [thunderbird 1:60.5.1+build2-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-thunderbird-1-60.5.1-build2-0ubuntu0.18.04.1.md) | Feb 13, 2019 |
| Linux | thunderbird-globalmenu Ubuntu 18.04.6 LTS (bionic) | 1:60.5.1+build2-0ubuntu0.18.04.1 | [thunderbird-globalmenu 1:60.5.1+build2-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-thunderbird-globalmenu-1-60.5.1-build2-0ubuntu0.18.04.1.md) | Feb 13, 2019 |
| Linux | thunderbird-gnome-support Ubuntu 18.04.6 LTS (bionic) | 1:60.5.1+build2-0ubuntu0.18.04.1 | [thunderbird-gnome-support 1:60.5.1+build2-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-thunderbird-gnome-support-1-60.5.1-build2-0ubuntu0.18.04.1.md) | Feb 13, 2019 |
| Linux | thunderbird-mozsymbols Ubuntu 18.04.6 LTS (bionic) | 1:60.5.1+build2-0ubuntu0.18.04.1 | [thunderbird-mozsymbols 1:60.5.1+build2-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-thunderbird-mozsymbols-1-60.5.1-build2-0ubuntu0.18.04.1.md) | Feb 13, 2019 |
| Linux | thunderbird-testsuite Ubuntu 18.04.6 LTS (bionic) | 1:60.5.1+build2-0ubuntu0.18.04.1 | [thunderbird-testsuite 1:60.5.1+build2-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-thunderbird-testsuite-1-60.5.1-build2-0ubuntu0.18.04.1.md) | Feb 13, 2019 |
| Linux | xul-ext-calendar-timezones Ubuntu 18.04.6 LTS (bionic) | 1:60.5.1+build2-0ubuntu0.18.04.1 | [xul-ext-calendar-timezones 1:60.5.1+build2-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-xul-ext-calendar-timezones-1-60.5.1-build2-0ubuntu0.18.04.1.md) | Feb 13, 2019 |
| Linux | xul-ext-gdata-provider Ubuntu 18.04.6 LTS (bionic) | 1:60.5.1+build2-0ubuntu0.18.04.1 | [xul-ext-gdata-provider 1:60.5.1+build2-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-xul-ext-gdata-provider-1-60.5.1-build2-0ubuntu0.18.04.1.md) | Feb 13, 2019 |
| Linux | xul-ext-lightning Ubuntu 18.04.6 LTS (bionic) | 1:60.5.1+build2-0ubuntu0.18.04.1 | [xul-ext-lightning 1:60.5.1+build2-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-xul-ext-lightning-1-60.5.1-build2-0ubuntu0.18.04.1.md) | Feb 13, 2019 |

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