PT-2022-10251 · Yasm+1 · Yasm+1

Clingto · Published 2022-07-26 · Updated 2022-07-29 · CVE-2021-33455

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions yasm version 1.3.0

Description An issue was discovered in yasm, which involves a NULL pointer dereference in the do directive() function located in modules/preprocs/nasm/nasm-pp.c.

Recommendations For yasm version 1.3.0, consider avoiding the use of the do directive() function until a patch is available. As a temporary workaround, restrict access to the modules/preprocs/nasm/nasm-pp.c module to minimize the risk of exploitation. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

NULL Pointer Dereference

Weakness Enumeration

CWE-476

Related Identifiers

AZL-10325

AZL-35365

CVE-2021-33455

Affected Products

Debian

Yasm

References · 13

• 🔥 https://github.com/yasm/yasm/issues/169 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2021-33455 · Security Note
• https://osv.dev/vulnerability/AZL-10325 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2021-33455 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-33455 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2021-33455 · Vendor Advisory
• https://osv.dev/vulnerability/AZL-35365 · Vendor Advisory
• https://ubuntu.com/security/CVE-2021-33455 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2021-33455 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2021-33455 · Security Note
• https://gist.github.com/Clingto/bb632c0c463f4b2c97e4f65f751c5e6d · Note
• https://t.me/cibsecurity/46987 · Telegram Post
• https://t.me/cvenotify/33989 · Telegram Post