CVE-2016-5257 Memory corruption in n/a

Q: Is CVE-2016-5257 being exploited?

There is no known exploitation of CVE-2016-5257 in the wild and no public exploit code.

Critical 9.8 Published 22 Sep 2016 Updated 6 Aug 2024

Remote attackers can cause denial of service or execute arbitrary code via memory corruption in the browser engine.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: Available

What is CVE-2016-5257?

CVE-2016-5257 is a critical memory corruption vulnerability in Mozilla Firefox, published on 22 Sep 2016. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Multiple unspecified vulnerabilities in the browser engine in Mozilla Firefox before 49.0, Firefox ESR 45.x before 45.4 and Thunderbird < 45.4 allow remote attackers to cause a denial of service (memory corruption and application crash) or possibly execute arbitrary code via unknown vectors.

Weakness: CWE-119

Which versions are affected by CVE-2016-5257?

It affects 1 product.

Linux distribution packages (16)

`thunderbird` Red Hat:enterprise_linux:5::client	All versions	`0:45.4.0-1.el5_11`
`thunderbird-debuginfo` Red Hat:enterprise_linux:5::client	All versions	`0:45.4.0-1.el5_11`
`thunderbird` Red Hat:enterprise_linux:6::client	All versions	`0:45.4.0-1.el6_8`
`thunderbird-debuginfo` Red Hat:enterprise_linux:6::client	All versions	`0:45.4.0-1.el6_8`
`thunderbird` Red Hat:enterprise_linux:6::server	All versions	`0:45.4.0-1.el6_8`
`thunderbird-debuginfo` Red Hat:enterprise_linux:6::server	All versions	`0:45.4.0-1.el6_8`
`thunderbird` Red Hat:enterprise_linux:6::workstation	All versions	`0:45.4.0-1.el6_8`
`thunderbird-debuginfo` Red Hat:enterprise_linux:6::workstation	All versions	`0:45.4.0-1.el6_8`
`thunderbird` Red Hat:enterprise_linux:7::client	All versions	`0:45.4.0-1.el7_2`
`thunderbird-debuginfo` Red Hat:enterprise_linux:7::client	All versions	`0:45.4.0-1.el7_2`
`thunderbird` Red Hat:enterprise_linux:7::server	All versions	`0:45.4.0-1.el7_2`
`thunderbird-debuginfo` Red Hat:enterprise_linux:7::server	All versions	`0:45.4.0-1.el7_2`
`thunderbird` Red Hat:enterprise_linux:7::workstation	All versions	`0:45.4.0-1.el7_2`
`thunderbird-debuginfo` Red Hat:enterprise_linux:7::workstation	All versions	`0:45.4.0-1.el7_2`
`thunderbird` Red Hat:rhel_productivity:5	All versions	`0:45.4.0-1.el5_11`
`thunderbird-debuginfo` Red Hat:rhel_productivity:5	All versions	`0:45.4.0-1.el5_11`

Products include Mozilla Firefox.

How do I fix CVE-2016-5257?

Upgrade to a fixed version.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2016-5257 being exploited?

There is no known exploitation of CVE-2016-5257 in the wild and no public exploit code.

All Mozilla Firefox vulnerabilities

Sources

Also known as DEBIAN-CVE-2016-5257, DLA-658-1, DSA-3690-1, GHSA-3vmp-cwhr-32wm, MGASA-2016-0336, RHSA-2016:1985 and 1 more.