What is CVE-2023-43826?

CVE-2023-43826 is a high-severity vulnerability in Apache Guacamole, classified under Integer Overflow or Wraparound. CVSS score: 7.5/10. Published 2023-12-19.

How severe is CVE-2023-43826?

High severity. CVSS v3 base score is 7.5 out of 10.

Is CVE-2023-43826 known to be exploited?

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

Integer overflow in Apache Guacamole

CVE-2023-43826

Apache Guacamole 1.5.3 and older do not consistently ensure that values received from a VNC server will not result in integer overflow. If a user connects to a malicious or compromised VNC server, specially-crafted data could result in memory corruption, possibly allowing arbitrary code to be executed with the privileges of the running guacd process. Users are recommended to upgrade to version 1.5.4, which fixes this issue.

Vulnerability class: Integer Overflow

EPSS: 0.009 (55.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Apache Guacamole
Apache Software Foundation Guacamole — versions 0

Weakness classification (CWE)

CWE-190 — Integer Overflow or Wraparound

Public proof-of-concept exploits

elttam/publications

References

security@apache.org (vendor-advisory, Mailing List, Vendor Advisory)
security@apache.org (Mailing List, Third Party Advisory)

Frequently asked questions

What is CVE-2023-43826?: CVE-2023-43826 is a high-severity vulnerability in Apache Guacamole, classified under Integer Overflow or Wraparound. CVSS score: 7.5/10. Published 2023-12-19.
How severe is CVE-2023-43826?: High severity. CVSS v3 base score is 7.5 out of 10.
Is CVE-2023-43826 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.