Critical severity · published Jun 13, 2023
CVE-2023-27997
Fortinet FortiOS and FortiProxy SSL-VPN Heap-Based Buffer Overflow Vulnerability
RansomwareIn wildKEV
9.8
CVSS
85.7%
EPSS
Yes
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)85.7% · higher than 100% of CVEs
Exploited in the wildYes
CISA KEVListed Jun 13, 2023
Federal remediation dueJul 4, 2023
Ransomware campaign useKnown
Affected products
Which versions
FO
FortiOS · Fortinet
7.2.0 through 7.2.4; 7.0.0 through 7.0.11; 6.4.0 through 6.4.12; 6.2.0 through 6.2.13; 6.0.0 through 6.0.16 · source: vendor, NVD
FO
FortiOS-6K7K · Fortinet
7.0.10; 7.0.5; 6.4.12; 6.4.10; 6.4.8; 6.4.6; +6 more · source: vendor
FO
FortiProxy · Fortinet
7.2.0 through 7.2.3; 7.0.0 through 7.0.9; 2.0.0 through 2.0.12; 1.2.0 through 1.2.13; 1.1.0 through 1.1.6 · source: vendor, NVD
FA
FortiOS and FortiProxy SSL-VPN · Fortinet
All versions, or not specified · source: KEV
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-27997
CVE.org
https://www.cve.org/CVERecord?id=CVE-2023-27997
CISA KEV catalogue
https://www.cisa.gov/known-exploited-vulnerabilities-catalog
fortiguard.com
https://fortiguard.com/psirt/FG-IR-23-097
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