{"id":"UBUNTU-CVE-2025-34458","details":"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.","modified":"2026-05-20T16:21:23.916079312Z","published":"2025-12-22T22:16:00Z","upstream":["CVE-2025-34458"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2025-34458"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2025-34458"},{"type":"REPORT","url":"https://github.com/marlinkcyber/advisories/blob/main/advisories/MCSAID-2025-010-direwolf-stack-buffer-overflow-kiss-frame.md"},{"type":"REPORT","url":"https://github.com/wb2osz/direwolf/commit/3658a87"},{"type":"REPORT","url":"https://github.com/wb2osz/direwolf/issues/618"},{"type":"REPORT","url":"https://www.vulncheck.com/advisories/wb2osz-direwolf-reachable-assertion-dos"}],"affected":[{"package":{"name":"direwolf","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/direwolf?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.2-1","1.2-2","1.2-2build1"],"ecosystem_specific":{"binaries":[{"binary_version":"1.2-2build1","binary_name":"direwolf"},{"binary_version":"1.2-2build1","binary_name":"direwolf-docs"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-34458.json"}},{"package":{"name":"direwolf","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/direwolf?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.3-2","1.4+dfsg-1build1"],"ecosystem_specific":{"binaries":[{"binary_name":"direwolf","binary_version":"1.4+dfsg-1build1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-34458.json"}},{"package":{"name":"direwolf","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/direwolf?arch=source&distro=focal"},"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"],"ecosystem_specific":{"binaries":[{"binary_name":"direwolf","binary_version":"1.5+dfsg-4build2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-34458.json"}},{"package":{"name":"direwolf","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/direwolf?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.6+dfsg-1build2","1.6+dfsg-2"],"ecosystem_specific":{"binaries":[{"binary_name":"direwolf","binary_version":"1.6+dfsg-2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-34458.json"}},{"package":{"name":"direwolf","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/direwolf?arch=source&distro=noble"},"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"],"ecosystem_specific":{"binaries":[{"binary_version":"1.7+dfsg-2build2","binary_name":"direwolf"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-34458.json"}},{"package":{"name":"direwolf","ecosystem":"Ubuntu:25.10","purl":"pkg:deb/ubuntu/direwolf?arch=source&distro=questing"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.7+dfsg-2build2"],"ecosystem_specific":{"binaries":[{"binary_name":"direwolf","binary_version":"1.7+dfsg-2build2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-34458.json"}},{"package":{"name":"direwolf","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/direwolf?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.7+dfsg-2build2","1.8~beta1+dfsg-1","1.8.1+dfsg-2"],"ecosystem_specific":{"binaries":[{"binary_version":"1.8.1+dfsg-2","binary_name":"direwolf"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-34458.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V4","score":"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"},{"type":"Ubuntu","score":"medium"}]}