FortiOS-6K7K: heap-based buffer overflow vulnerability [CWE-122] in FortiOS version 7.2.4 and below, version 7.0.11 and below, version…
This critical-severity Fortinet advisory covers CVE-2023-27997 affecting FortiOS, FortiProxy.
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Summary
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.
Affected products named by the advisory: FortiOS-6K7K.
CISA Known Exploited Vulnerability
- Listed:
- Jun 13, 2023 · federal remediation due Jul 4, 2023
- Required action:
- Apply updates per vendor instructions.
- Ransomware use:
- Known
KEV is a prioritization signal from CISA — remediation detail still comes from the vendor advisory.
- FortiOS 7.2: 7.2.0 through 7.2.4
- FortiOS 7.0: 7.0.0 through 7.0.11
- FortiOS 6.4: 6.4.0 through 6.4.12
- FortiOS 6.2: 6.2.0 through 6.2.13
- FortiOS 6.0: 6.0.0 through 6.0.16
- FortiOS-6K7K 7.0: 7.0.10
- FortiOS-6K7K 7.0: 7.0.5
- FortiOS-6K7K 6.4: 6.4.12
- FortiOS-6K7K 6.4: 6.4.10
- FortiOS-6K7K 6.4: 6.4.8
- FortiOS-6K7K 6.4: 6.4.6
- FortiOS-6K7K 6.4: 6.4.2
- FortiOS-6K7K 6.2: 6.2.9 through 6.2.13
- FortiOS-6K7K 6.2: 6.2.6 through 6.2.7
- FortiOS-6K7K 6.2: 6.2.4
- FortiOS-6K7K 6.0: 6.0.12 through 6.0.16
- FortiOS-6K7K 6.0: 6.0.10
- FortiProxy 7.2: 7.2.0 through 7.2.3
- FortiProxy 7.0: 7.0.0 through 7.0.9
- FortiProxy 2.0: 2.0.0 through 2.0.12
Official advisory · high-confidence parse· fetched 2 hours ago·verify at source
- FortiOS 7.2: 7.2.5
- FortiOS 7.0: 7.0.12
- FortiOS 6.4: 6.4.13
- FortiOS 6.2: 6.2.14
- FortiOS 6.0: 6.0.17
- FortiOS-6K7K 7.0: 7.0.12
- FortiOS-6K7K 6.4: 6.4.13
- FortiOS-6K7K 6.2: 6.2.15
- FortiOS-6K7K 6.0: 6.0.17
- FortiProxy 7.2: 7.2.4
- FortiProxy 7.0: 7.0.10
- FortiProxy 2.0: 2.0.13
- FortiProxy 1.2: migrate to a fixed release
- FortiProxy 1.1: migrate to a fixed release
Official advisory · high-confidence parse· fetched 2 hours ago·verify at source
Mitigation checklist
- Upgrade per the Affected/Solution table: FortiOS 7.2: 7.2.5; FortiOS 7.0: 7.0.12; FortiOS 6.4: 6.4.13; FortiOS 6.2: 6.2.14; FortiOS 6.0: 6.0.17; ….
- Disable SSL-VPN.
Official advisory · high-confidence parse· fetched 2 hours ago·verify at source
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