USN-3874-1: Firefox vulnerabilities
firefox vulnerabilities
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 18.10
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS
- Ubuntu 14.04 LTS
Summary
Firefox could be made to crash or run programs as your login if it
opened a malicious website.
Software Description
- firefox – Mozilla Open Source web browser
Details
Multiple security issues were discovered in Firefox. If a user were
tricked in to opening a specially crafted website, an attacker could
potentially exploit these to cause a denial of service, gain additional
privileges by escaping the sandbox, or execute arbitrary code.
(CVE-2018-18500, CVE-2018-18501, CVE-2018-18502, CVE-2018-18503,
CVE-2018-18504, CVE-2018-18505)
It was discovered that Firefox allowed PAC files to specify that requests
to localhost are sent through the proxy to another server. If proxy
auto-detection is enabled, an attacker could potentially exploit this to
conduct attacks on local services and tools. (CVE-2018-18506)
Update instructions
The problem can be corrected by updating your system to the following package versions:
- Ubuntu 18.10
- firefox – 65.0+build2-0ubuntu0.18.10.1
- Ubuntu 18.04 LTS
- firefox – 65.0+build2-0ubuntu0.18.04.1
- Ubuntu 16.04 LTS
- firefox – 65.0+build2-0ubuntu0.16.04.1
- Ubuntu 14.04 LTS
- firefox – 65.0+build2-0ubuntu0.14.04.1
To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.
After a standard system update you need to restart Firefox to make
all the necessary changes.
References
- CVE-2018-18500
- CVE-2018-18501
- CVE-2018-18502
- CVE-2018-18503
- CVE-2018-18504
- CVE-2018-18505
- CVE-2018-18506
Source: USN-3874-1: Firefox vulnerabilities
