PT-2021-24334 · Libredwg · Libredwg

Published 2021-12-31 · Updated 2022-01-11 · CVE-2021-45950

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 0.12.4.4313 through 0.12.4.4367

Description: The issue is related to an out-of-bounds write in the dwg free BLOCK private function, which is called from dwg free BLOCK and dwg free object.

Recommendations: For LibreDWG versions 0.12.4.4313 through 0.12.4.4367, consider restricting access to the dwg free BLOCK private function as a temporary workaround until a patch is available. 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-2021-45950

Affected Products

Libredwg

References · 5

• 🔥 https://github.com/google/oss-fuzz-vulns/blob/main/vulns/libredwg/OSV-2021-814.yaml · Exploit
• 🔥 https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=34766 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2021-45950 · Security Note
• https://osv.dev/vulnerability/CVE-2021-45950 · Vendor Advisory
• https://t.me/cvenotify/25241 · Telegram Post