CVE-2017-17820 — MEDIUM (5.5)

Vulnerability Description

In Netwide Assembler (NASM) 2.14rc0, there is a use-after-free in pp_list_one_macro in asm/preproc.c that will lead to a remote denial of service attack, related to mishandling of operand-type errors.

CVSS Score

5.5

MEDIUM

CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality

NONE

Integrity

NONE

Availability

HIGH

Affected Products

Vendor	Product	Versions
Nasm	Netwide Assembler	2.14
Canonical	Ubuntu Linux	14.04

Related Weaknesses (CWE)

CWE-416

References

https://bugzilla.nasm.us/show_bug.cgi?id=3392433ExploitIssue TrackingThird Party Advisory
https://usn.ubuntu.com/3694-1/Third Party Advisory
https://bugzilla.nasm.us/show_bug.cgi?id=3392433ExploitIssue TrackingThird Party Advisory
https://usn.ubuntu.com/3694-1/Third Party Advisory

FAQ

What is CVE-2017-17820?

CVE-2017-17820 is a vulnerability with a CVSS score of 5.5 (MEDIUM). In Netwide Assembler (NASM) 2.14rc0, there is a use-after-free in pp_list_one_macro in asm/preproc.c that will lead to a remote denial of service attack, related to mishandling of operand-type errors.

How severe is CVE-2017-17820?

CVE-2017-17820 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2017-17820?

Check the references section above for vendor advisories and patch information. Affected products include: Nasm Netwide Assembler, Canonical Ubuntu Linux.