wb2osz Dire Wolf up to 1.8 aprs_mic_e assertion

Summaryinfo

A vulnerability, which was classified as problematic, has been found in wb2osz Dire Wolf up to 1.8. Impacted is the function aprs_mic_e. The manipulation leads to assertion. This vulnerability is listed as CVE-2025-34458. The attack may be initiated remotely. There is no available exploit. It is suggested to install a patch to address this issue.

Detailsinfo

A vulnerability was found in wb2osz Dire Wolf up to 1.8 and classified as problematic. This issue affects the function aprs_mic_e. The manipulation with an unknown input leads to a assertion vulnerability. Using CWE to declare the problem leads to CWE-617. The product contains an assert() or similar statement that can be triggered by an attacker, which leads to an application exit or other behavior that is more severe than necessary. Impacted is availability. The summary by CVE is:

wb2osz/direwolf (Dire Wolf) versions up to and including 1.8, prior to commit 3658a87, contain a reachable assertion vulnerability in the APRS MIC-E decoder function aprs_mic_e() located in src/decode_aprs.c. When processing a specially crafted AX.25 frame containing a MIC-E message with an empty or truncated comment field, the application triggers an unhandled assertion checking for a non-empty comment. This assertion failure causes immediate process termination, allowing a remote, unauthenticated attacker to cause a denial of service by sending malformed APRS traffic.

The weakness was presented by Vlatko Kosturjak as 618. The advisory is shared at github.com. The identification of this vulnerability is CVE-2025-34458 since 04/15/2025. 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 are known, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 279647 (Linux Distros Unpatched Vulnerability : CVE-2025-34458), which helps to determine the existence of the flaw in a target environment.

Applying the patch 3658a87 is able to eliminate this problem. The bugfix is ready for download at github.com.

The vulnerability is also documented in the vulnerability database at Tenable (279647). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Vendor

• wb2osz

Name

• Dire Wolf

Version

• 1.0
• 1.1
• 1.2
• 1.3
• 1.4
• 1.5
• 1.6
• 1.7
• 1.8

License

• open-source

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CPE 2.2info

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Entryinfo

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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