CVE-2020-6831

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.

Category

9.8
CVSS
Severity: Critical
CVSS 3.1 •
CVSS 2.0 •
EPSS 5.54% Top 15%
Vendor Advisory ubuntu.com Vendor Advisory debian.org Vendor Advisory opensuse.org Vendor Advisory mozilla.org Vendor Advisory mozilla.org Vendor Advisory mozilla.org
Affected: Mozilla Firefox ESR
Affected: Mozilla Firefox
Affected: Mozilla Thunderbird
Published at:
Updated at:

References

Link Tags
https://www.mozilla.org/security/advisories/mfsa2020-18/ vendor advisory
https://www.mozilla.org/security/advisories/mfsa2020-16/ vendor advisory
https://www.mozilla.org/security/advisories/mfsa2020-17/ vendor advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1632241 permissions required
https://usn.ubuntu.com/4373-1/ third party advisory vendor advisory
https://security.gentoo.org/glsa/202005-03 third party advisory patch
https://security.gentoo.org/glsa/202005-04 third party advisory
https://www.debian.org/security/2020/dsa-4714 third party advisory vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00000.html mailing list third party advisory vendor advisory
http://packetstormsecurity.com/files/158480/usrsctp-Stack-Buffer-Overflow.html vdb entry third party advisory

Frequently Asked Questions

What is the severity of CVE-2020-6831?
CVE-2020-6831 has been scored as a critical severity vulnerability.
How to fix CVE-2020-6831?
To fix CVE-2020-6831, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2020-6831 being actively exploited in the wild?
It is possible that CVE-2020-6831 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~6% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2020-6831?
CVE-2020-6831 affects Mozilla Firefox ESR, Mozilla Firefox, Mozilla Thunderbird.
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