{"id":"CVE-2025-34458","aliases":["DEBIAN-CVE-2025-34458","EUVD-2025-204761","GHSA-r4wq-665p-whrq","UBUNTU-CVE-2025-34458"],"status":"published","title":"wb2osz/direwolf \u003c= 1.8.1 Reachable Assertion DoS","description":"wb2osz/direwolf (Dire Wolf) versions up to and including 1.8.1, 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.","severity":{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00461,"percentile":0.40208,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-617"],"published":"2025-12-22T21:29:46Z","modified":"2026-11-05T11:45:13Z","fixes":[{"ecosystem":"Debian:14","package":"direwolf","fixed_in":["1.8.1+dfsg-2"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:14","package":"direwolf","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.8.1+dfsg-2"}]}],"versions":["1.7+dfsg-2","1.8.1+dfsg-1","1.8.1+dfsg-2~bpo13+1","1.8~beta1+dfsg-1"]},{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"direwolf","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.2-1","1.2-2","1.2-2build1"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"direwolf","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.3-2","1.4+dfsg-1build1"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"direwolf","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.5+dfsg-2","1.5+dfsg-3","1.5+dfsg-4","1.5+dfsg-4build1","1.5+dfsg-4build2"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"direwolf","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.6+dfsg-1build2","1.6+dfsg-2"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"direwolf","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.6+dfsg-4build1","1.7+dfsg-1","1.7+dfsg-2","1.7+dfsg-2build1","1.7+dfsg-2build2"]},{"source":"osv","ecosystem":"Ubuntu:25.10","package":"direwolf","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.7+dfsg-2build2"]},{"source":"osv","ecosystem":"Ubuntu:26.10","package":"direwolf","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.8.1+dfsg-2"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"direwolf","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.7+dfsg-2build2","1.8~beta1+dfsg-1","1.8.1+dfsg-2"]}],"products":[{"vendor":"wb2osz","product":"dire wolf"}],"references":[{"url":"https://github.com/marlinkcyber/advisories/blob/main/advisories/MCSAID-2025-010-direwolf-stack-buffer-overflow-kiss-frame.md","tags":["technical-description","exploit","evidence","report"]},{"url":"https://github.com/wb2osz/direwolf/issues/618","tags":["issue-tracking","report"]},{"url":"https://github.com/wb2osz/direwolf/commit/3658a87","tags":["patch","fix","report"]},{"url":"https://www.vulncheck.com/advisories/wb2osz-direwolf-reachable-assertion-dos","tags":["third-party-advisory","advisory","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-34458","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-r4wq-665p-whrq"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/34xxx/CVE-2025-34458.json","tags":["advisory"]},{"url":"https://github.com/wb2osz/direwolf","tags":["package"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2025-34458","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2025-34458","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2025-34458","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2025-34458","title":"wb2osz/direwolf \u003c= 1.8.1 Reachable Assertion DoS","description":"wb2osz/direwolf (Dire Wolf) versions up to and including 1.8.1, 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.","status":"published","published":"2025-12-22T21:29:46.85Z","modified":"2026-10-29T21:15:16.014Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"high","assessor":"cna"}],"cwes":["CWE-617"],"updated_at":"2026-11-02T14:32:54.534202Z"}],"euvd":[{"id":"EUVD-2025-204761","description":"wb2osz/direwolf (Dire Wolf) versions up to and including 1.8.1, 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.","status":"published","published":"2025-12-22T21:29:46Z","modified":"2026-10-29T21:15:16Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"high"}],"updated_at":"2026-11-02T16:59:14.250155Z"}],"ghsa":[{"id":"GHSA-r4wq-665p-whrq","title":"wb2osz/direwolf (Dire Wolf) versions up to and including 1.8, prior to commit 3658a87, contain a...","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.","status":"published","published":"2025-12-23T00:30:32Z","modified":"2025-12-23T00:30:39Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high"}],"cwes":["CWE-617"],"updated_at":"2026-11-02T15:05:19.281484Z"}],"nvd":[{"id":"CVE-2025-34458","description":"wb2osz/direwolf (Dire Wolf) versions up to and including 1.8.1, 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.","status":"published","published":"2025-12-22T22:16:04.687Z","modified":"2026-10-29T21:17:04.877Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high","assessor":"secondary"}],"cwes":["CWE-617"],"updated_at":"2026-11-02T14:11:52.309391Z"}],"osv":[{"id":"CVE-2025-34458","title":"wb2osz/direwolf \u003c= 1.8.1 Reachable Assertion DoS","description":"wb2osz/direwolf (Dire Wolf) versions up to and including 1.8.1, 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.","status":"published","published":"2025-12-22T21:29:46.85Z","modified":"2026-10-31T02:30:49.53576298Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"high"}],"cwes":["CWE-617"],"updated_at":"2026-11-02T15:44:48.02508Z"},{"id":"DEBIAN-CVE-2025-34458","description":"wb2osz/direwolf (Dire Wolf) versions up to and including 1.8.1, 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.","status":"published","published":"2025-12-22T22:16:04.687Z","modified":"2026-10-30T09:49:14.965259002Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high"}],"updated_at":"2026-11-02T15:45:45.870237Z"},{"id":"UBUNTU-CVE-2025-34458","description":"wb2osz/direwolf (Dire Wolf) versions up to and including 1.8.1, 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.","status":"published","published":"2025-12-22T22:16:00Z","modified":"2026-11-05T11:45:13.943608847Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"high"}],"updated_at":"2026-11-05T13:30:49.23793Z"}]}}