Bug 1559905 (CVE-2018-8881)

Summary:	CVE-2018-8881 nasm: Heap overflow in function tokenize in asm/preproc.c
Product:	[Other] Security Response	Reporter:	Laura Pardo <lpardo>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	java-sig-commits, mizdebsk
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	nasm 2.13.03	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2021-10-21 19:58:41 UTC	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:	1559910, 1567395, 1567396
Bug Blocks:	1559921

Description Laura Pardo 2018-03-23 14:13:30 UTC

Netwide Assembler (NASM) 2.13.02rc2 has a heap-based buffer over-read in the function tokenize in asm/preproc.c, related to an unterminated string.


References:
https://bugzilla.nasm.us/show_bug.cgi?id=3392446

Patch:
https://github.com/cyrillos/nasm/commit/3144e84add8b152cc7a71e44617ce6f21daa4ba3

Comment 3 Pedro Yóssis Silva Barbosa 2018-04-16 18:41:34 UTC

Based on the description, this issue affects nasm shipped by Red Hat Enterprise Linux 6 and 7. However, the reproducer attached in https://bugzilla.nasm.us/show_bug.cgi?id=3392446 did not work here.