PT-2021-22608 · Libredwg · Libredwg

Seviezhou · Published 2021-09-20 · Updated 2021-09-24 · CVE-2021-39521

Positive Technologies (AI Summary)

CVSS v3.1

6.5

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions: libredwg versions prior to 0.10.1.3751

Description: An issue exists in the function bit read BB() located in bits.c, which allows an attacker to cause Denial of Service due to a NULL pointer dereference.

Recommendations: For versions prior to 0.10.1.3751, as a temporary workaround, consider disabling the bit read BB() function until a patch is available.

Exploit

Fix

NULL Pointer Dereference

Weakness Enumeration

CWE-476

Related Identifiers

CVE-2021-39521

Affected Products

Libredwg

References · 4

• 🔥 https://github.com/LibreDWG/libredwg/issues/262 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2021-39521 · Security Note
• https://osv.dev/vulnerability/CVE-2021-39521 · Vendor Advisory
• https://t.me/cvenotify/21429 · Telegram Post