Bug 2210236 (CVE-2023-31725)

Summary:	CVE-2023-31725 yasm: heap use-after-free in expand_mmac_params() in nasm-pp.c
Product:	[Other] Security Response	Reporter:	TEJ RATHI <trathi>
Component:	vulnerability	Assignee:	Nobody <nobody>
Status:	NEW ---	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	nickc, sipoyare
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:	A heap use-after-free issue was discovered in Yasm's expand_mmac_params() function in nasm-pp.c file. An attacker could exploit this vulnerability by tricking a user into opening specially crafted file, triggering an out-of-bounds read access, causing an application to halt or crash, leading to a denial of service.	Story Points:	---
Clone Of:		Environment:
Last Closed:		Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	2210246, 2210245, 2210247, 2210248
Bug Blocks:	2208018

Description TEJ RATHI 2023-05-26 08:45:12 UTC

yasm 1.3.0.55.g101bc was discovered to contain a heap-use-after-free via the function expand_mmac_params at yasm/modules/preprocs/nasm/nasm-pp.c.

https://github.com/yasm/yasm/issues/221
https://github.com/DaisyPo/fuzzing-vulncollect/tree/main/yasm/heap-use-after-free/nasm-pp.c:3878%20in%20expand_mmac_params

Comment 1 TEJ RATHI 2023-05-26 09:24:59 UTC

Created yasm tracking bugs for this issue:

Affects: epel-all [bug 2210246]
Affects: fedora-all [bug 2210245]