Bug 2102019 (CVE-2022-34299)

Summary:	CVE-2022-34299 libdwarf: heap buffer over-read in dwarf_global_formref_b() in dwarf_form.c
Product:	[Other] Security Response	Reporter:	TEJ RATHI <trathi>
Component:	vulnerability	Assignee:	Nobody <nobody>
Status:	NEW ---	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	caswilli, epel-packagers-sig, fche, jitesh.1337, kaycoth, michel, orion
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	libdwarf 0.4.1	Doc Type:	If docs needed, set a value
Doc Text:	A buffer-overflow vulnerability was found in libdwarf's dwarf_global_formref_b() function in dwarf_form.c. A carefully crafted `.debug_info` causes libdwarf to read outside a buffer containing a Dwarf_Sig8 symbolic reference. This issue can cause a segmentation violation or other major error, terminating the calling application and resulting in 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:	2102021
Bug Blocks:	2100818

Description TEJ RATHI 2022-06-29 07:13:49 UTC

There is a heap-based buffer over-read in libdwarf 0.4.0. This issue is related to dwarf_global_formref_b.

https://github.com/davea42/libdwarf-code/issues/119
https://github.com/davea42/libdwarf-code/commit/7ef09e1fc9ba07653dd078edb2408631c7969162

Comment 1 TEJ RATHI 2022-06-29 07:20:19 UTC

Created libdwarf tracking bugs for this issue:

Affects: fedora-all [bug 2102021]