Home/CVE/A buffer overflow could occur when parsing and validating SCTP chunks in WebRTC. This could have led to memory corruptio
CVE

CVE-2020-6831

A buffer overflow could occur when parsing and validating SCTP chunks in WebRTC. This could have led to memory corruptio

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.

CRITICAL · CVSS 9.8 EPSS 0.10449
Act now
  • EPSS ≥ 0.10 - elevated exploitation probability
  • EPSS percentile: top 7% of all CVEs by exploitation likelihood
  • Public exploit or PoC is available
  • CVSS base score ≥ 7.0
Sigma rules1 YARA rules0
⬡

Weakness Classification

CWE-787Out-of-bounds Write
▤

Affected Products & Versions

6
mozilla firefox< 76.0
mozilla firefox esr< 68.8.0
mozilla thunderbird< 68.8.0
canonical ubuntu linuxall versions
debian linuxall versions
opensuse leapall versions
⚠

Public Exploits & PoCs

1
pocpacketstormsecurity.com · usrsctp-Stack-Buffer-Overflow.htmlpacketstormsecurity.com
◈

Sigma Hunt Rules

1
Exact rules name this CVE ID. Product rules name an affected product in their title. Related rules cover techniques used by actors who exploited this CVE. Showing the most relevant matches; the complete related set is on the full drill-down.
producthighSQLite Firefox Profile Data DB Access
▣

Scoring & Timeline

9.8
CRITICAL · CVSS v3.1 · security@mozilla.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD26 May 2020 · 06:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
⚑

Vendor Advisories

30
suse-csafopenSUSE-SU-2024:14572-1
suse-csafopenSUSE-SU-2024:10600-1
suse-csafopenSUSE-SU-2024:10601-1
suse-csafopenSUSE-SU-2024:10681-1
suse-csafopenSUSE-SU-2024:12948-1
🔗

References & Sources

9
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00000.htmlMailing ListThird Party Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1632241Permissions Required
https://security.gentoo.org/glsa/202005-03PatchThird Party Advisory
https://security.gentoo.org/glsa/202005-04Third Party Advisory
https://usn.ubuntu.com/4373-1/Third Party Advisory
https://www.debian.org/security/2020/dsa-4714Third Party Advisory
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