Very High
CVE-2023-27997
CVE-2023-27997
Description
A heap-based buffer overflow vulnerability [CWE-122] in FortiOS version 7.2.4 and below, version 7.0.11 and below, version 6.4.12 and below, version 6.0.16 and below and FortiProxy version 7.2.3 and below, version 7.0.9 and below, version 2.0.12 and below, version 1.2 all versions, version 1.1 all versions SSL-VPN may allow a remote attacker to execute arbitrary code or commands via specifically crafted requests.
Add Assessment
Technical Analysis
A July 2024 bulletin from multiple U.S. government agencies indicates that North Korean state-sponsored attackers have demonstrated interest in this vulnerability — not immediately clear whether it was exploited or just used in reconnaissance/target selection: https://www.cisa.gov/news-events/cybersecurity-advisories/aa24-207a
Technical Analysis
This vulnerability is expected to be of very high value as Fortigate SSL VPN vulnerabilities have been exploited in the past, particurlarly by state sponsored or otherwise-motivated IAB actors. Fortinet also predict that whilst there isn’t an official link to Volt Typhoon, they do expect the majority of TA’s exploiting this vulnerability, Volt Typhoon have been known to exploit prior Fortigate SSL VPN vulns as part of their initial access campaign.
CVSS V3 Severity and Metrics
General Information
Vendors
- fortinet
Products
- fortios,
- fortios 6.0.10,
- fortios 6.2.4,
- fortios 6.2.6,
- fortios 6.2.7,
- fortios 6.4.10,
- fortios 6.4.12,
- fortios 6.4.2,
- fortios 6.4.6,
- fortios 6.4.8,
- fortios 7.0.10,
- fortios 7.0.5,
- fortiproxy
Exploited in the Wild
References
Miscellaneous
