ArchLinux: 201901-16: nasm: denial of service
Summary
- CVE-2019-6290 (denial of service)
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.
- CVE-2019-6291 (denial of service)
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.
Resolution
Upgrade to 2.14.02-1.
# pacman -Syu "nasm>=2.14.02-1"
The problems have been fixed upstream in version 2.14.02.
References
https://bugzilla.nasm.us/show_bug.cgi?id=3392548 https://bugzilla.nasm.us/show_bug.cgi?id=3392549 https://security.archlinux.org/CVE-2019-6290 https://security.archlinux.org/CVE-2019-6291
Workaround
None.