OISF Suricata up to 8.0.1 base64_data null pointer dereference

CVSS Meta Temp Score
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CTI Interest Score
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6.3$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic has been found in OISF Suricata up to 8.0.1. Affected by this issue is the function base64_data. Performing a manipulation results in null pointer dereference. This vulnerability is known as CVE-2025-64335. Remote exploitation of the attack is possible. No exploit is available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic has been found in OISF Suricata up to 8.0.1. This affects the function base64_data. The manipulation with an unknown input leads to a null pointer dereference vulnerability. CWE is classifying the issue as 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. This is going to have an impact on availability. The summary by CVE is:

Suricata is a network IDS, IPS and NSM engine developed by the OISF (Open Information Security Foundation) and the Suricata community. In versions from 8.0.0 to before 8.0.2, a NULL dereference can occur when the entropy keyword is used in conjunction with base64_data. This issue has been patched in version 8.0.2. A workaround involves disabling rules that use entropy in conjunction with base64_data.

It is possible to read the advisory at github.com. This vulnerability is uniquely identified as CVE-2025-64335 since 10/30/2025. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 276960 (Linux Distros Unpatched Vulnerability : CVE-2025-64335), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 8.0.2 eliminates this vulnerability. Applying the patch c935f08cd988600fd0a4f828a585b181dd5de012 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the vulnerability database at Tenable (276960). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

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Version

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.3

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 7.5
CNA Vector (GitHub_M): 🔒

CVSSv2info

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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Null pointer dereference
CWE: CWE-476 / CWE-404
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 276960
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2025-64335

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Suricata 8.0.2
Patch: c935f08cd988600fd0a4f828a585b181dd5de012

Timelineinfo

10/30/2025 CVE reserved
11/27/2025 +28 days Advisory disclosed
11/27/2025 +0 days VulDB entry created
12/02/2025 +5 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: GHSA-v299-h7p3-q4f2
Status: Confirmed

CVE: CVE-2025-64335 (🔒)
GCVE (CVE): GCVE-0-2025-64335
GCVE (VulDB): GCVE-100-333675

Entryinfo

Created: 11/27/2025 03:25
Updated: 12/02/2025 22:24
Changes: 11/27/2025 03:25 (67), 12/02/2025 22:24 (2)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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