PT-2021-10673 · Gnu · Gnu Libredwg

Linhlhq · CVE-2020-21818 · Published 2021-05-17 · Updated 2026-07-09

Positive Technologies (AI Summary)

CVSS v3.1

8.8

High

Base vector

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

Name of the Vulnerable Software and Affected Versions: GNU LibreDWG version 0.10.2641

Description: A heap-based buffer overflow issue exists. The problem is located in the htmlescape function in the escape.c file.

Recommendations: For GNU LibreDWG version 0.10.2641, consider applying a patch or fix to address the heap-based buffer overflow issue in the htmlescape function. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Memory Corruption

Weakness Enumeration

CWE-787

Related Identifiers

CVE-2020-21818

Affected Products

Gnu Libredwg

References · 6

• 🔥 https://github.com/LibreDWG/libredwg/issues/182#issuecomment-572891053 · Exploit
• https://osv.dev/vulnerability/CVE-2020-21818 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2020-21818 · Security Note
• https://t.me/cveNotify/186184 · Telegram Post
• https://t.me/cveNotify/192063 · Telegram Post
• http://gnu.com · Note