Bug 686722 (CVE-2019-6290, CVE-2019-6291)

Summary:	dev-lang/nasm: multiple vulnerabilities
Product:	Gentoo Security	Reporter:	D'juan McDonald (domhnall) <flopwiki>
Component:	Vulnerabilities	Assignee:	Gentoo Security <security>
Status:	UNCONFIRMED ---
Severity:	normal	CC:	kripton, matthew, proxy-maint
Priority:	Normal
Version:	unspecified
Hardware:	All
OS:	Linux
Whiteboard:	A3 [upstream]
Package list:		Runtime testing required:	---

Description D'juan McDonald (domhnall) 2019-05-25 08:05:08 UTC

(https://nvd.nist.gov/vuln/detail/CVE-2019-6290):
An infinite recursion issue was discovered in eval.c in Netwide Assembler (NASM) through 2.14.02. There is a stack exhaustion problem resulting from infinite recursion in the functions expr, rexp, bexpr and cexpr in certain scenarios involving lots of '{' characters. Remote attackers could leverage this vulnerability to cause a denial-of-service via a crafted asm file.

Reference: https://bugzilla.nasm.us/show_bug.cgi?id=3392548


(https://nvd.nist.gov/vuln/detail/CVE-2019-6291):
An issue was discovered in the function expr6 in eval.c in Netwide Assembler (NASM) through 2.14.02. There is a stack exhaustion problem caused by the expr6 function making recursive calls to itself in certain scenarios involving lots of '!' or '+' or '-' characters. Remote attackers could leverage this vulnerability to cause a denial-of-service via a crafted asm file.

Reference: https://bugzilla.nasm.us/show_bug.cgi?id=3392549

Gentoo Security Padawan
(domhnall)