What is CVE-2023-20032?

CVE-2023-20032 is a critical-severity vulnerability in Cisco Secure Endpoint, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 9.8/10. Published 2023-03-01.

How severe is CVE-2023-20032?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Is CVE-2023-20032 known to be exploited?

6 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Buffer overflow in Cisco Secure Endpoint

CVE-2023-20032

On Feb 15, 2023, the following vulnerability in the ClamAV scanning library was disclosed: A vulnerability in the HFS+ partition 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 execute arbitrary code. This vulnerability is due to a missing buffer size check that may result in a heap buffer overflow write. An attacker could exploit this vulnerability by submitting a crafted HFS+ partition file to be scanned by ClamAV on an affected device. A successful exploit could allow the attacker to execute arbitrary code with the privileges of the ClamAV scanning process, or else crash the process, resulting in a denial of service (DoS) condition. For a description of this vulnerability, see the ClamAV blog ["https://blog.clamav.net/"].

Vulnerability class: Buffer Overflow

EPSS: 0.293 (98.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Cisco Secure Endpoint — versions 6.1.9, 6.2.5, 6.3.7
Cisco Secure Endpoint Private Cloud Administration Portal — versions N/A
Cisco Secure Web Appliance — versions 11.7.0-406, 11.7.0-418, 11.7.1-049
Cisco Secure_endpoint
Cisco Secure_endpoint_private_cloud
Cisco Web_security_appliance
Clamav — versions 1.0.0
Stormshield Stormshield_network_security

Weakness classification (CWE)

Public proof-of-concept exploits

References

psirt@cisco.com (Vendor Advisory)

Frequently asked questions

What is CVE-2023-20032?: CVE-2023-20032 is a critical-severity vulnerability in Cisco Secure Endpoint, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 9.8/10. Published 2023-03-01.
How severe is CVE-2023-20032?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2023-20032 known to be exploited?: 6 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.