High severity · published Jul 1, 2021
CVE-2021-36080
GNU LibreDWG 0.12.3.4163 through 0.12.3.4191 has a double-free in bit_chain_free (called from dwg_encode_MTEXT and dwg_encode_add_object)
8.8
CVSS
1.3%
EPSS
No
On KEV
Description
GNU LibreDWG 0.12.3.4163 through 0.12.3.4191 has a double-free in bit_chain_free (called from dwg_encode_MTEXT and dwg_encode_add_object).
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.3% · higher than 71% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
LI
Libredwg · Gnu
0.12.3.4163 through 0.12.3.4191 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-36080
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-36080
Exploit
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=31724
Patch
https://github.com/LibreDWG/libredwg/commit/9b6e0ff9ef02818df034fc42c3bd149a5ff89342
Third Party Advisory
https://github.com/google/oss-fuzz-vulns/blob/main/vulns/libredwg/OSV-2021-495.yaml
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