XML External Entity Injection in ClamAV Scanning Library
CVE-2023-20052

5.3MEDIUM

Key Information:

Vendor
Cisco
Status
Cisco Secure Endpoint
Vendor
CVE Published:
1 March 2023

Badges

👾 Exploit Exists🟡 Public PoC

Summary

A vulnerability in the DMG file parser of ClamAV allows unauthenticated remote attackers to exploit XML entity substitution. This flaw enables attackers to submit a crafted DMG file for scanning, potentially leading to the leakage of sensitive information from files accessed during the scanning process. The affected versions include ClamAV 1.0.0 and earlier, as well as 0.105.1 and 0.103.7 and earlier.

Affected Version(s)

Cisco Secure Endpoint 6.0.9

Cisco Secure Endpoint 6.0.7

Cisco Secure Endpoint 6.1.5

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2023-20052
Created by nokn0wthing

References

https://sec.cloudapps.cisco.com/security/center/content/C...

EPSS Score

8% chance of being exploited in the next 30 days.

CVSS V3.1

Score:
5.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

.