CVE-2020-6831 Memory corruption in Firefox
A buffer overflow in WebRTC SCTP parsing allows attackers to cause memory corruption, potentially leading to code execution or crashes in Firefox and Thunderbird.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2020-6831?
CVE-2020-6831 is a critical memory corruption vulnerability in Canonical Ubuntu Linux, published on 26 May 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A buffer overflow could occur when parsing and validating SCTP chunks in WebRTC. This could have led to memory corruption and a potentially exploitable crash. This vulnerability affects Firefox ESR < 68.8, Firefox < 76, and Thunderbird < 68.8.0.
Weakness: CWE-787
Which versions are affected by CVE-2020-6831?
It affects 6 products.
Products include Canonical Ubuntu Linux, Debian Debian Linux, Mozilla Firefox, Mozilla Firefox Esr, Mozilla Thunderbird, Opensuse Leap.
How do I fix CVE-2020-6831?
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-2020-6831 being exploited?
There is no known exploitation of CVE-2020-6831 in the wild and no public exploit code.
Other vulnerabilities in Canonical Ubuntu Linux
Sources
Also known as DEBIAN-CVE-2020-6831, GHSA-5x26-44w7-97vc, UBUNTU-CVE-2020-6831.