CVE-2022-42475
Fortinet FortiOS Heap-Based Buffer Overflow Vulnerability
Does this matter?
Known to be exploited in the wild (CISA KEV, CISA remediation deadline 3 January 2023). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.
Description
A heap-based buffer overflow vulnerability [CWE-122] in FortiOS SSL-VPN 7.2.0 through 7.2.2, 7.0.0 through 7.0.8, 6.4.0 through 6.4.10, 6.2.0 through 6.2.11, 6.0.15 and earlier and FortiProxy SSL-VPN 7.2.0 through 7.2.1, 7.0.7 and earlier may allow a remote unauthenticated attacker to execute arbitrary code or commands via specifically crafted requests.
- CVSS 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 99.47% probability · 100th percentile
- CISA KEV
- Listed 13 December 2022 · due 3 January 2023 · used in ransomware campaigns
- Weakness
- CWE-197, CWE-787
- Affected
- fortinet/fortios · fortinet/fortiproxy
- Source
- psirt@fortinet.com
CISA notes
Apply updates per vendor instructions. https://www.fortiguard.com/psirt/FG-IR-22-398; https://nvd.nist.gov/vuln/detail/CVE-2022-42475
References
- https://fortiguard.com/psirt/FG-IR-22-398Exploit, Mitigation, Vendor Advisory
- https://fortiguard.com/psirt/FG-IR-22-398Exploit, Mitigation, Vendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-42475US Government Resource
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.