OISF Suricata up to 7.0.15 TLS Certificate Helper TlsGetCertInfo null pointer dereference

Summaryinfo

A vulnerability has been found in OISF Suricata up to 7.0.15 and classified as critical. Affected by this vulnerability is the function TlsGetCertInfo of the component TLS Certificate Helper. The manipulation leads to null pointer dereference. This vulnerability is listed as CVE-2026-45747. The attack may be initiated remotely. There is no available exploit. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in OISF Suricata up to 7.0.15. It has been rated as critical. This issue affects the function TlsGetCertInfo of the component TLS Certificate Helper. The manipulation with an unknown input leads to a null pointer dereference vulnerability. Using CWE to declare the problem leads to CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. Impacted is availability. The summary by CVE is:

Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to version 7.0.16, the Lua TLS certificate information helper could dereference NULL certificate fields when a Lua script requested certificate information for TLS traffic where some certificate fields were absent. Crafted TLS traffic processed by a deployment using affected Lua TLS scripting could crash Suricata, resulting in denial of service. Version 7.0.16 contains a fix. As a workaround, avoid Lua scripts that call TLS certificate information helpers on untrusted traffic (`TlsGetCertInfo` function), or update scripts to handle missing certificate fields where possible.

It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2026-45747 since 05/13/2026. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details of the vulnerability are known, but there is no available exploit.

Upgrading to version 7.0.16 eliminates this vulnerability.

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Productinfo

Vendor

• OISF

Name

• Suricata

Version

• 7.0.0
• 7.0.1
• 7.0.2
• 7.0.3
• 7.0.4
• 7.0.5
• 7.0.6
• 7.0.7
• 7.0.8
• 7.0.9
• 7.0.10
• 7.0.11
• 7.0.12
• 7.0.13
• 7.0.14
• 7.0.15

License

• open-source

Website

• Product: https://github.com/OISF/suricata/

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