MEDIUM 5.3 Microsoft PoC

CVE-2023-20052

On Feb 15 2023 the following vulnerability in the ClamAV scanning library was disclosed: A vulnerability in the DMG file parser of ClamAV versions 1.0.0 and earlier 0.105.1 and earlier and 0.103.7 and earlier could allow an unauthenticated remote attacker to access sensitive information on an affected device. This vulnerability is due to enabling XML entity substitution that may result in XML external entity injection. An attacker could exploit this vulnerability by submitting a crafted DMG file to be scanned by ClamAV on an affected device. A successful exploit could allow the attacker to leak bytes from any file that may be read by the ClamAV scanning process.

Microsoft Security Update 2023-Feb: On Feb 15 2023 the following vulnerability in the ClamAV scanning library was disclosed: A vulnerability in the DMG file parser of ClamAV versions 1.0.0 and earlier 0.105.1 and earlier and 0.103.7 and earlier could allow an unauthenticated remote attacker to access sensitive information on an affected device. This vulnerability is due to enabling XML entity substitution that may result in XML external entity injection. An attacker could exploit this vulnerability by submitting a crafted DMG file to be scanned by ClamAV on an affected device. A successful exploit could allow the attacker to leak bytes from any file that may be read by the ClamAV scanning process.

Affected Products

cbl2 clamav 0.105.2-1 on CBL Mariner 2.0

References

Published: 2023-02-14 · Source: Microsoft · Feed updated: 2026-08-20

This medium severity vulnerability with a CVSS score of 5.3 was published on 2023-02-14 via Microsoft. 🚨 A public proof-of-concept exploit is available on GitHub. EPSS score: 7.0% (top 6% of all CVEs by exploitation probability). Affected: cbl2 clamav 0.105.2-1 on CBL Mariner 2.0.

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