Vulnerability DatabaseCVE-2020-5234
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CVE-2020-5234
January 31, 2020
MessagePack for C# and Unity before version 1.9.11 and 2.1.90 has a vulnerability where untrusted data can lead to DoS attack due to hash collisions and stack overflow. Review the linked GitHub Security Advisory for more information and remediation steps.
Related Resources (8)
https://github.com/neuecc/MessagePack-CSharp/security/advisories/GHSA-7q36-4xx7-xcxf
https://github.com/neuecc/MessagePack-CSharp/issues/810
https://github.com/neuecc/MessagePack-CSharp/commit/f88684078698386df02204f13faeff098a61f007
https://nvd.nist.gov/vuln/detail/CVE-2020-5234
https://github.com/MessagePack-CSharp/MessagePack-CSharp
https://github.com/neuecc/MessagePack-CSharp/commit/56fa86219d01d0a183babbbbcb34abbdea588a02
https://github.com/aspnet/Announcements/issues/405
https://github.com/MessagePack-CSharp/MessagePack-CSharp/security/advisories/GHSA-7q36-4xx7-xcxf
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CVSS v4
Base Score:
5.9
Attack Vector
NETWORK
Attack Complexity
HIGH
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
PASSIVE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
NONE
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
4.8
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
CVSS v2
Base Score:
6.8
Access Vector
NETWORK
Access Complexity
LOW
Authentication
SINGLE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
Weakness Type (CWE)
Stack-based Buffer Overflow
CWE-121
Out-of-bounds Write
CWE-787
EPSS
Base Score:
0.58