PT-2023-11656 · Asn1C+1 · Asn1C+1

Seviezhou · Published 2023-07-18 · Updated 2023-07-26 · CVE-2020-23911

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 asn1c versions prior to 0.9.29

Description An issue exists in the default error logger() function located in asn1fix.c, which allows an attacker to cause Denial of Service due to a NULL pointer dereference.

Recommendations For versions prior to 0.9.29, update to version 0.9.29 or later to resolve the issue. As a temporary workaround, consider restricting access to the default error logger() function until a patch is available.

Exploit

Fix

DoS

NULL Pointer Dereference

Weakness Enumeration

CWE-476

Related Identifiers

CVE-2020-23911

Affected Products

Debian

Asn1C

References · 9

• 🔥 https://github.com/vlm/asn1c/issues/394 · Exploit
• https://cve.org/CVERecord?id=CVE-2020-23911 · Security Note
• https://ubuntu.com/security/CVE-2020-23911 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2020-23911 · Security Note
• https://osv.dev/vulnerability/CVE-2020-23911 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2020-23911 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2020-23911 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2020-23911 · Vendor Advisory
• https://t.me/cibsecurity/66924 · Telegram Post