CVE-2021-33466 — MEDIUM (5.5)

Vulnerability Description

An issue was discovered in yasm version 1.3.0. There is a NULL pointer dereference in expand_smacro() in modules/preprocs/nasm/nasm-pp.c.

CVSS Score

5.5

MEDIUM

CVSS:3.1/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
Tortall	Yasm	1.3.0

Related Weaknesses (CWE)

CWE-476

References

https://gist.github.com/Clingto/bb632c0c463f4b2c97e4f65f751c5e6dThird Party Advisory
https://github.com/yasm/yasm/issues/172ExploitIssue TrackingThird Party Advisory
https://gist.github.com/Clingto/bb632c0c463f4b2c97e4f65f751c5e6dThird Party Advisory
https://github.com/yasm/yasm/issues/172ExploitIssue TrackingThird Party Advisory

FAQ

What is CVE-2021-33466?

CVE-2021-33466 is a vulnerability with a CVSS score of 5.5 (MEDIUM). An issue was discovered in yasm version 1.3.0. There is a NULL pointer dereference in expand_smacro() in modules/preprocs/nasm/nasm-pp.c.

How severe is CVE-2021-33466?

CVE-2021-33466 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-2021-33466?

Check the references section above for vendor advisories and patch information. Affected products include: Tortall Yasm.