CVE-2020-6831
CRITICAL
9.8
CVSS Score
Published: May 26, 2020 at 05:05 PM UTC
Updated: June 17, 2026 at 03:23 AM UTC
6 products affected across 4 vendorsDebian LinuxUbuntu LinuxFirefox
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Severity
CRITICAL9.8
Exploit prediction
EPSS 6%
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.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
Ubuntu Linux· Canonicalrubygems
95%Debian Linux· Debiandrupal
95%v < 76v < 76.0
Affected range stops below 76, so it looks safe — our inference, not a vendor statement
Affected range stops below 76.0, so it looks safe — our inference, not a vendor statement
v < 68.8v < 68.8.0
Affected range stops below 68.8, so it looks safe — our inference, not a vendor statement
Affected range stops below 68.8.0, so it looks safe — our inference, not a vendor statement
v < 68.8.0
Affected range stops below 68.8.0, so it looks safe — our inference, not a vendor statement
Leap· openSUSEdrupal
95%Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
References (10)
Vendor Advisoryx_refsource_SUSEMailing ListThird Party Advisory
Source: [email protected]
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00000.htmlx_refsource_MISCThird Party AdvisoryVDB Entry
Source: [email protected]
http://packetstormsecurity.com/files/158480/usrsctp-Stack-Buffer-Overflow.htmlx_refsource_MISCPermissions Required
Source: [email protected]
https://bugzilla.mozilla.org/show_bug.cgi?id=1632241x_refsource_MISCPatchThird Party Advisory
Source: [email protected]
https://security.gentoo.org/glsa/202005-03x_refsource_MISCThird Party Advisory
Source: [email protected]
https://security.gentoo.org/glsa/202005-04Vendor Advisoryx_refsource_UBUNTUThird Party Advisory
Source: [email protected]
https://usn.ubuntu.com/4373-1/Vendor Advisoryx_refsource_DEBIANThird Party Advisory
Source: [email protected]
https://www.debian.org/security/2020/dsa-4714x_refsource_MISCVendor Advisory
Source: [email protected]
https://www.mozilla.org/security/advisories/mfsa2020-16/CVSS
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- HIGH
- Integrity
- HIGH
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-787
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