CVE-2015-0817 Memory corruption in n/a
Remote attackers can execute arbitrary code or read memory via crafted JavaScript due to improper bounds checking in Firefox's asm.js JIT compiler.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2015-0817?
CVE-2015-0817 is a medium-severity memory corruption vulnerability in Mozilla Firefox, published on 24 Mar 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 asm.js implementation in Mozilla Firefox before 36.0.3, Firefox ESR 31.x before 31.5.2, and SeaMonkey before 2.33.1 does not properly determine the cases in which bounds checking may be safely skipped during JIT compilation and heap access, which allows remote attackers to read or write to unintended memory locations, and consequently execute arbitrary code, via crafted JavaScript.
Weakness: CWE-17
Which versions are affected by CVE-2015-0817?
It affects 3 products.
Products include Mozilla Firefox, Mozilla Firefox Esr, Mozilla Seamonkey.
How do I fix CVE-2015-0817?
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-2015-0817 being exploited?
There is no known exploitation of CVE-2015-0817 in the wild and no public exploit code.
Other vulnerabilities in Mozilla Firefox
Sources
Also known as GHSA-4rw7-7wpq-7g64, UBUNTU-CVE-2015-0817.