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Description

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.

PUBLISHED Reserved 2025-04-15 | Published 2025-12-22 | Updated 2025-12-23 | Assigner VulnCheck




HIGH: 8.7CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

Problem types

CWE-617 Reachable Assertion

Product status

Default status
unaffected

Any version
affected

commit 3658a87 (custom)
unaffected

Credits

Vlatko Kosturjak with Marlink Cyber finder

References

github.com/...0-direwolf-stack-buffer-overflow-kiss-frame.md technical-description exploit

github.com/wb2osz/direwolf/issues/618 issue-tracking

github.com/wb2osz/direwolf/commit/3658a87 patch

www.vulncheck.com/...wb2osz-direwolf-reachable-assertion-dos third-party-advisory

cve.org (CVE-2025-34458)

nvd.nist.gov (CVE-2025-34458)

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Data based on CVE®. Copyright © 1999-2025, The MITRE Corporation. All rights reserved.