CVE-2015-0803 Use after free in n/a

What is CVE-2015-0803?

CVE-2015-0803 is a high-severity use after free vulnerability in Canonical Ubuntu Linux, published on 1 Apr 2015. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

The HTMLSourceElement::AfterSetAttr function in Mozilla Firefox before 37.0 does not properly constrain the original data type of a casted value during the setting of a SOURCE element's attributes, which allows remote attackers to execute arbitrary code or cause a denial of service (use-after-free) via a crafted HTML document.

Weakness: CWE-264

Which versions are affected by CVE-2015-0803?

It affects 3 products.

Products include Canonical Ubuntu Linux, Mozilla Firefox, Opensuse Opensuse.

How do I fix CVE-2015-0803?

Upgrade to a fixed version.

Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.

Is CVE-2015-0803 being exploited?

There is no known exploitation of CVE-2015-0803 in the wild and no public exploit code.

Other vulnerabilities in Canonical Ubuntu Linux

• CVE-2020-11651 SaltStack Salt Authentication Bypass Exploited Critical 9.8
• CVE-2020-7247 OpenSMTPD Remote Code Execution Exploited Critical 9.8
• CVE-2019-16928 Exim Out-of-bounds Write Exploited Critical 9.8
• CVE-2018-6789 Exim Buffer Overflow Exploited Critical 9.8
• CVE-2015-2590 Oracle Java SE and Java SE Embedded Remote Code Execution Exploited Critical 9.8

All Canonical Ubuntu Linux vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-4gmg-5g4q-8pp3, UBUNTU-CVE-2015-0803.