CVE-2023-27997: Fortinet FortiOS and FortiProxy SSL-VPN Heap-Based Buffer Overflow Vulnerability
CVE-2023-27997 · Severity: critical · CVSS 9.8 · Exploited in the wild · Published 2023-06-13
A heap-based buffer overflow vulnerability in Fortinet FortiOS and FortiProxy SSL-VPN allows an unauthenticated remote attacker to execute arbitrary code or commands via specifically crafted requests. The vulnerability has been observed being exploited in the wild.
Yes. CVE-2023-27997 is known to be exploited in the wild, first recorded on 13 June 2023. Treat it as urgent.
How severe is CVE-2023-27997?
Critical severity, with a CVSS score of 9.8, published 13 June 2023.
Which products and versions are affected?
Fortinet FortiOS 7.2.4 and below, 7.0.11 and below, 6.4.12 and below, 6.0.16 and below; Fortinet FortiProxy 7.2.3 and below, 7.0.9 and below, 2.0.12 and below, 1.2 all versions, 1.1 all versions.
Is there a fix for CVE-2023-27997?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2023-27997 attacked?
It is attacked over the network, in an operating system.
Am I affected by CVE-2023-27997?
Check whether you run Fortinet FortiADC, Fortinet FortiOS or Fortinet FortiProxy SSL-VPN. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Affected products
Fortinet FortiOS 7.2.4 and below, 7.0.11 and below, 6.4.12 and below, 6.0.16 and below
Fortinet FortiProxy 7.2.3 and below, 7.0.9 and below, 2.0.12 and below, 1.2 all versions, 1.1 all versions
Timeline
2023-06-13: disclosed
2023-06-13: kev added: Added to CISA Known Exploited Vulnerabilities Catalog