Mozilla Firefox ESR CVE-2019-11758 Memory Corruption Vulnerability

Description

Mozilla Firefox ESR is prone to a memory-corruption vulnerability. A remote attacker can leverage this issue to execute arbitrary code within the context of the application. Successful exploits will compromise the application and possibly the underlying system. This issue is fixed in: Firefox ESR 68.2

Technologies Affected

• Mozilla Firefox ESR 10.0.1
• Mozilla Firefox ESR 10.0.10
• Mozilla Firefox ESR 10.0.11
• Mozilla Firefox ESR 10.0.12
• Mozilla Firefox ESR 10.0.2
• Mozilla Firefox ESR 10.0.3
• Mozilla Firefox ESR 10.0.4
• Mozilla Firefox ESR 10.0.5
• Mozilla Firefox ESR 10.0.6
• Mozilla Firefox ESR 10.0.7
• Mozilla Firefox ESR 10.0.8
• Mozilla Firefox ESR 10.0.9
• Mozilla Firefox ESR 17.0
• Mozilla Firefox ESR 17.0.1
• Mozilla Firefox ESR 17.0.10
• Mozilla Firefox ESR 17.0.11
• Mozilla Firefox ESR 17.0.2
• Mozilla Firefox ESR 17.0.3
• Mozilla Firefox ESR 17.0.4
• Mozilla Firefox ESR 17.0.5
• Mozilla Firefox ESR 17.0.6
• Mozilla Firefox ESR 17.0.7
• Mozilla Firefox ESR 17.0.8
• Mozilla Firefox ESR 17.0.9
• Mozilla Firefox ESR 24.0
• Mozilla Firefox ESR 24.0.1
• Mozilla Firefox ESR 24.0.2
• Mozilla Firefox ESR 24.1
• Mozilla Firefox ESR 24.1.0
• Mozilla Firefox ESR 24.1.1
• Mozilla Firefox ESR 24.2
• Mozilla Firefox ESR 24.3
• Mozilla Firefox ESR 24.4
• Mozilla Firefox ESR 24.5
• Mozilla Firefox ESR 24.6
• Mozilla Firefox ESR 24.7
• Mozilla Firefox ESR 24.8
• Mozilla Firefox ESR 24.8.1
• Mozilla Firefox ESR 31.0
• Mozilla Firefox ESR 31.1
• Mozilla Firefox ESR 31.1.0
• Mozilla Firefox ESR 31.1.1
• Mozilla Firefox ESR 31.2
• Mozilla Firefox ESR 31.3
• Mozilla Firefox ESR 31.3.0
• Mozilla Firefox ESR 31.4
• Mozilla Firefox ESR 31.5
• Mozilla Firefox ESR 31.5.2
• Mozilla Firefox ESR 31.5.3
• Mozilla Firefox ESR 31.6
• Mozilla Firefox ESR 31.7
• Mozilla Firefox ESR 31.8
• Mozilla Firefox ESR 38.1
• Mozilla Firefox ESR 38.1.1
• Mozilla Firefox ESR 38.2
• Mozilla Firefox ESR 38.2.1
• Mozilla Firefox ESR 38.3
• Mozilla Firefox ESR 38.4
• Mozilla Firefox ESR 38.5
• Mozilla Firefox ESR 38.5.1
• Mozilla Firefox ESR 38.5.2
• Mozilla Firefox ESR 38.6
• Mozilla Firefox ESR 38.6.1
• Mozilla Firefox ESR 38.7
• Mozilla Firefox ESR 38.8
• Mozilla Firefox ESR 45.1
• Mozilla Firefox ESR 45.2
• Mozilla Firefox ESR 45.3
• Mozilla Firefox ESR 45.4
• Mozilla Firefox ESR 45.5
• Mozilla Firefox ESR 45.5.1
• Mozilla Firefox ESR 45.6
• Mozilla Firefox ESR 45.7
• Mozilla Firefox ESR 45.8
• Mozilla Firefox ESR 45.9
• Mozilla Firefox ESR 52.0.1
• Mozilla Firefox ESR 52.1
• Mozilla Firefox ESR 52.1.1
• Mozilla Firefox ESR 52.2
• Mozilla Firefox ESR 52.3
• Mozilla Firefox ESR 52.4
• Mozilla Firefox ESR 52.5
• Mozilla Firefox ESR 52.5.2
• Mozilla Firefox ESR 52.6
• Mozilla Firefox ESR 52.7
• Mozilla Firefox ESR 52.7.2
• Mozilla Firefox ESR 52.7.3
• Mozilla Firefox ESR 52.8
• Mozilla Firefox ESR 52.8.1
• Mozilla Firefox ESR 52.9
• Mozilla Firefox ESR 60
• Mozilla Firefox ESR 60.0.2
• Mozilla Firefox ESR 60.1
• Mozilla Firefox ESR 60.2
• Mozilla Firefox ESR 60.2.1
• Mozilla Firefox ESR 60.2.2
• Mozilla Firefox ESR 60.3
• Mozilla Firefox ESR 60.4
• Mozilla Firefox ESR 60.5
• Mozilla Firefox ESR 60.5.1
• Mozilla Firefox ESR 60.6
• Mozilla Firefox ESR 60.6.1
• Mozilla Firefox ESR 60.7
• Mozilla Firefox ESR 60.7.1
• Mozilla Firefox ESR 60.7.2
• Mozilla Firefox ESR 60.8
• Mozilla Firefox ESR 68.0.1
• Mozilla Firefox ESR 68.0.2
• Mozilla Firefox ESR 68.1
• Redhat Enterprise Linux 6
• Redhat Enterprise Linux 7
• Redhat Enterprise Linux 8

Recommendations

Block external access at the network boundary, unless external parties require service.
If global access isn’t needed, filter access to the affected computer at the network boundary. Restricting access to only trusted computers and networks might greatly reduce the likelihood of a successful exploit.

Run all software as a nonprivileged user with minimal access rights.
Attackers may successfully exploit client flaws in the browser through cross-site scripting vulnerabilities. When possible, run client software as regular user accounts with limited access to system resources. This may limit the immediate consequences of client-side vulnerabilities.

Deploy network intrusion detection systems to monitor network traffic for malicious activity.
Deploy NIDS to monitor network traffic for signs of anomalous or suspicious activity. This may indicate exploit attempts or activity that results from a successful exploit.

Implement multiple redundant layers of security.
Various memory-protection schemes (such as nonexecutable and randomly mapped memory segments) may hinder an attacker’s ability to exploit memory corruption vulnerabilities.

Updates are available. Please see the references or vendor advisory for more information.