CVE-2023-37930: Use of uninitialized resource in SSLVPN websocket

Published Apr 8, 2025
·
Updated

Multiple issues including the use of uninitialized ressources [CWE-908] and excessive iteration [CWE-834] vulnerabilities vulnerability in Fortinet allows a VPN user to corrupt memory potentially leading to code or commands execution via specifically crafted requests.

Other sources

Multiple potential issues, including the use of uninitialized ressources [CWE-908] and excessive iteration [CWE-834] in FortiOS & FortiProxy SSLVPN webmode may allow a VPN user to corrupt memory, potentially leading to code or commands execution via specifically crafted requests.

FortiGuard

Affected Software

8 affected components
Fortinet FortiOS SSL VPN webmode>=7.2.0<7.2.6, >=7.0.1<7.0.12, >=6.4.7<6.4.14
Fortinet FortiProxy SSL VPN webmode>=7.2.0<7.2.6, >=7.0.0<7.0.12
Fortinet FortiOS>=6.4.7<6.4.15
Fortinet FortiOS>=7.0.1<7.0.13
Fortinet FortiOS>=7.2.0<7.2.6
Fortinet FortiOS=7.4.0
Fortinet FortiProxy>=7.0.0<7.0.13
Fortinet FortiProxy>=7.2.0<7.2.7

Remediation

Information

Please upgrade to FortiOS version 7.4.1 or above Please upgrade to FortiOS version 7.2.6 or above Please upgrade to FortiOS version 7.0.13 or above Please upgrade to FortiOS version 6.4.15 or above Please upgrade to FortiOS version 6.4.14 or above Please upgrade to FortiProxy version 7.4.0 or above Please upgrade to FortiProxy version 7.2.7 or above Please upgrade to FortiProxy version 7.0.13 or above FortiSASE is no longer impacted, issue remediated Q3/23 ## Workaround: Disable SSLVPN webmode. Alternatively, please use SSLVPN tunnel mode, IPsec (tunnel) or ZTNA (web access). https://community.fortinet.com/t5/FortiGate/Technical-Tip-How-to-disable-SSL-VPN-Web-Mode-or-Tunnel-Mode-in/ta-p/217990 https://docs.fortinet.com/document/fortigate/7.2.3/administration-guide/45836/ssl-vpn-to-ipsec-vpn https://docs.fortinet.com/document/fortigate/7.2.3/administration-guide/78050/migrating-from-ssl-vpn-to-ztna

Event History

Apr 8, 2025
Advisory Published
via FortiGuard·12:00 AM
Data Sourced
via FortiGuard·12:00 AM
DescriptionSeverityWeaknessAffected Software
CVE Published
via MITRE·02:03 PM
Data Sourced
via MITRE·02:03 PM
RemedyDescriptionSeverityWeakness
Data Sourced
via NVD·02:15 PM
DescriptionSeverityWeaknessAffected Software
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Frequently Asked Questions

1

What is the severity of CVE-2023-37930?

CVE-2023-37930 has been assigned a high severity rating due to its potential to allow unauthorized access and system compromise.

2

How do I fix CVE-2023-37930?

To fix CVE-2023-37930, users should upgrade FortiOS SSL VPN webmode to version 7.4.1 or later and FortiProxy SSL VPN webmode to version 7.2.6 or later.

3

Which versions are affected by CVE-2023-37930?

CVE-2023-37930 affects FortiOS SSL VPN webmode versions 6.4.7 to 6.4.14, 7.0.1 to 7.0.11, and 7.2.0 to 7.2.5, as well as FortiProxy SSL VPN webmode versions 7.0.0 to 7.0.12 and 7.2.0 to 7.2.6.

4

What vulnerabilities are included in CVE-2023-37930?

CVE-2023-37930 includes vulnerabilities such as the use of uninitialized resources and excessive iteration, which can be exploited for denial of service and data compromise.

5

Who is impacted by CVE-2023-37930?

Organizations using the affected versions of Fortinet FortiOS SSL VPN webmode and FortiProxy SSL VPN webmode are at risk due to CVE-2023-37930.

Contact

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Fortitude Valley,
QLD 4006, Australia
info@secalerts.co
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