PT-2020-10869 · Gnu · Gnu Libredwg

Skyvast404 · Published 2020-07-16 · Updated 2020-07-22 · CVE-2019-20911

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 GNU LibreDWG versions prior to 0.9.4

Description The issue is related to a denial of service in the bit calc CRC function in bits.c, caused by crafted input that affects a for loop.

Recommendations For GNU LibreDWG versions prior to 0.9.4, update to version 0.9.4 or later to resolve the issue. As a temporary workaround, consider restricting the input to the bit calc CRC function in bits.c to prevent crafted input from causing a denial of service.

Exploit

Fix

Infinite Loop

Weakness Enumeration

CWE-835

Related Identifiers

CVE-2019-20911

Affected Products

Gnu Libredwg

References · 5

• 🔥 https://github.com/LibreDWG/libredwg/issues/178 · Exploit
• https://github.com/LibreDWG/libredwg/commit/c6f6668b82bfe595899cc820279ac37bb9ef16f5 · Patch
• https://osv.dev/vulnerability/CVE-2019-20911 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2019-20911 · Security Note
• https://t.me/cibsecurity/13515 · Telegram Post