CVE-2020-5234

Untrusted data can lead to DoS attack in MessagePack for C# and Unity

CVSS 4.8 MEDIUMEPSS 1.6%CWE-121

Vexday Risk Score

13Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 4.8EPSS 1.6%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

31 Jan 2020Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

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.

CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:N/A:H

Affected products

neuecc · MessagePack neuecc · MessagePack.ImmutableCollection neuecc · MessagePack.ReactiveProperty neuecc · MessagePack.UnityShims

Want to know if your infrastructure is exposed to this?

Talk to TrueHacking →

References

https://github.com/neuecc/MessagePack-CSharp/commit/56fa86219d01d0a183babbbbcb34abbdea588a02 https://github.com/neuecc/MessagePack-CSharp/commit/f88684078698386df02204f13faeff098a61f007 https://github.com/neuecc/MessagePack-CSharp/issues/810 https://github.com/neuecc/MessagePack-CSharp/security/advisories/GHSA-7q36-4xx7-xcxf