Bug 2256134 (CVE-2023-52079)

Summary:	CVE-2023-52079 msgpackr: crafted message leads to Denial of Service
Product:	[Other] Security Response	Reporter:	Patrick Del Bello <pdelbell>
Component:	vulnerability	Assignee:	Product Security <prodsec-ir-bot>
Status:	NEW ---	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	aileenc, chazlett, gmalinko, janstey, pdelbell, rstepani
Target Milestone:	---	Keywords:	Security
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Hardware:	All
OS:	Linux
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Doc Text:	A flaw was found in msgpackr. A malicious message could get stuck in a decoder loop, leading to a denial of service (DoS) attack.	Story Points:	---
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
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Bug Blocks:	2256133

Description Patrick Del Bello 2023-12-28 20:24:00 UTC

msgpackr is a fast MessagePack NodeJS/JavaScript implementation. Prior to 1.10.1, when decoding user supplied MessagePack messages, users can trigger stuck threads by crafting messages that keep the decoder stuck in a loop. The fix is available in v1.10.1.  
Exploits seem to require structured cloning, replacing the 0x70 extension with your own (that throws an error or does something other than recursive referencing) should mitigate the issue.

https://github.com/kriszyp/msgpackr/commit/18f44f8800e2261341cdf489d1ba1e35a0133602
https://github.com/kriszyp/msgpackr/security/advisories/GHSA-7hpj-7hhx-2fgx