PT-2021-21104 · Gnu · Gnu Libredwg

Rurban · Published 2021-07-01 · Updated 2021-07-08 · CVE-2021-36080

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 versions 0.12.3.4163 through 0.12.3.4191

Description: The issue is related to a double-free error in the bit chain free function, which is called from dwg encode MTEXT and dwg encode add object.

Recommendations: For GNU LibreDWG versions 0.12.3.4163 through 0.12.3.4191, consider updating to a version that fixes the double-free error in the bit chain free function. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Double Free

Weakness Enumeration

CWE-415

Related Identifiers

CVE-2021-36080

Affected Products

Gnu Libredwg

References · 5

• 🔥 https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=31724 · Exploit
• https://github.com/LibreDWG/libredwg/commit/9b6e0ff9ef02818df034fc42c3bd149a5ff89342 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2021-36080 · Security Note
• https://osv.dev/vulnerability/CVE-2021-36080 · Vendor Advisory
• https://github.com/google/oss-fuzz-vulns/blob/main/vulns/libredwg/OSV-2021-495.yaml · Note