CVE-2018-18505
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.
How to fix
- mozilla firefox60.5.0, 65.0 or later
- mozilla thunderbird60.5.0 or later
- access.redhat.com/errata/RHSA-2019:0219
- usn.ubuntu.com/3897-1/
- security.gentoo.org/glsa/201903-04
- usn.ubuntu.com/3874-1/
- access.redhat.com/errata/RHSA-2019:0269
- access.redhat.com/errata/RHSA-2019:0218
- debian.org/security/2019/dsa-4376
- debian.org/security/2019/dsa-4392
- access.redhat.com/errata/RHSA-2019:0270
- security.gentoo.org/glsa/201904-07
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| mozilla firefox | v < 60.5.0, v < 65.0 | 60.5.0, 65.0 |
| mozilla thunderbird | v < 60.5.0 | 60.5.0 |
| canonical ubuntu_linux | 14.04, 16.04, 18.04, 18.10 | — |
| debian debian_linux | 8.0, 9.0 | — |
| redhat enterprise_linux_desktop | 6.0, 7.0 | — |
| redhat enterprise_linux_server | 6.0, 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, 7.0 | — |
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