{"id":"UBUNTU-CVE-2025-59530","details":"quic-go is an implementation of the QUIC protocol in Go. In versions prior to 0.49.0, 0.54.1, and 0.55.0, a misbehaving or malicious server can cause a denial-of-service (DoS) attack on the quic-go client by triggering an assertion failure, leading to a process crash. This requires no authentication and can be exploited during the handshake phase. This was observed in the wild with certain server implementations. quic-go needs to be able to handle misbehaving server implementations, including those that prematurely send a HANDSHAKE_DONE frame. Versions 0.49.0, 0.54.1, and 0.55.0 discard Initial keys when receiving a HANDSHAKE_DONE frame, thereby correctly handling premature HANDSHAKE_DONE frames.","modified":"2026-05-20T16:23:37.802343901Z","published":"2025-10-10T16:15:00Z","upstream":["CVE-2025-59530"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2025-59530"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2025-59530"},{"type":"REPORT","url":"https://github.com/quic-go/quic-go/security/advisories/GHSA-47m2-4cr7-mhcw"},{"type":"REPORT","url":"https://github.com/quic-go/quic-go/pull/5354"},{"type":"REPORT","url":"https://github.com/quic-go/quic-go/blob/v0.55.0/connection.go#L2682-L2685"}],"affected":[{"package":{"name":"golang-github-lucas-clemente-quic-go","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/golang-github-lucas-clemente-quic-go?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.18.0-3","0.24.0-1","0.25.0-1"],"ecosystem_specific":{"binaries":[{"binary_version":"0.25.0-1","binary_name":"golang-github-lucas-clemente-quic-go-dev"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-59530.json"}},{"package":{"name":"golang-github-lucas-clemente-quic-go","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/golang-github-lucas-clemente-quic-go?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.37.4-1","0.38.2-1"],"ecosystem_specific":{"binaries":[{"binary_name":"golang-github-lucas-clemente-quic-go-dev","binary_version":"0.38.2-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-59530.json"}},{"package":{"name":"golang-github-lucas-clemente-quic-go","ecosystem":"Ubuntu:25.10","purl":"pkg:deb/ubuntu/golang-github-lucas-clemente-quic-go?arch=source&distro=questing"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.50.0-1","0.50.1-2"],"ecosystem_specific":{"binaries":[{"binary_version":"0.50.1-2","binary_name":"golang-github-lucas-clemente-quic-go-dev"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-59530.json"}},{"package":{"name":"golang-github-lucas-clemente-quic-go","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/golang-github-lucas-clemente-quic-go?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.50.1-2","0.59.0-2"],"ecosystem_specific":{"binaries":[{"binary_version":"0.59.0-2","binary_name":"golang-github-lucas-clemente-quic-go-dev"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-59530.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"medium"}]}