{"id":"CVE-2023-46239","aliases":["EUVD-2023-2633","GHSA-3q6m-v84f-6p9h","GO-2023-2160","UBUNTU-CVE-2023-46239"],"status":"published","title":"quic-go vulnerable to pointer dereference that can lead to panic","description":"quic-go is an implementation of the QUIC protocol in Go. Starting in version 0.37.0 and prior to version 0.37.3, by serializing an ACK frame after the CRYTPO that allows a node to complete the handshake, a remote node could trigger a nil pointer dereference (leading to a panic) when the node attempted to drop the Handshake packet number space. An attacker can bring down a quic-go node with very minimal effort. Completing the QUIC handshake only requires sending and receiving a few packets. Version 0.37.3 contains a patch. Versions before 0.37.0 are not affected.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-08","score":0.00956,"percentile":0.61651,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-248","CWE-476"],"published":"2023-10-30T15:08:05Z","modified":"2026-10-28T02:30:48Z","fixes":[{"ecosystem":"Go","package":"github.com/quic-go/quic-go","fixed_in":["0.37.3"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"Go","package":"github.com/quic-go/quic-go","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0.37.0"},{"fixed":"0.37.3"}]}]},{"source":"osv","ecosystem":"Go","package":"github.com/quic-go/quic-go","ranges":[{"type":"SEMVER","events":[{"introduced":"0.37.0"},{"fixed":"0.37.3"}]}]},{"source":"osv","ecosystem":"Go","package":"github.com/quic-go/quic-go","ranges":[{"type":"SEMVER","events":[{"introduced":"0.37.0"},{"fixed":"0.37.3"}]}]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"golang-github-lucas-clemente-quic-go","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.18.0-3","0.24.0-1","0.25.0-1"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"golang-github-lucas-clemente-quic-go","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.37.4-1","0.38.2-1"]},{"source":"osv","ecosystem":"Ubuntu:25.10","package":"golang-github-lucas-clemente-quic-go","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.50.0-1","0.50.1-2"]},{"source":"osv","ecosystem":"Ubuntu:26.10","package":"golang-github-lucas-clemente-quic-go","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.59.0-2"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"golang-github-lucas-clemente-quic-go","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.50.1-2","0.59.0-2"]}],"products":[{"vendor":"quic-go","product":"quic-go"},{"vendor":"quic-go_project","product":"quic-go"}],"references":[{"url":"https://github.com/quic-go/quic-go/security/advisories/GHSA-3q6m-v84f-6p9h","tags":["x_refsource_CONFIRM","x_transferred","Patch","Vendor Advisory","advisory","web","report"]},{"url":"https://github.com/quic-go/quic-go/commit/b6a4725b60f1fe04e8f1ddcc3114e290fcea1617","tags":["x_refsource_MISC","x_transferred","Patch","fix","web","report"]},{"url":"https://github.com/quic-go/quic-go/releases/tag/v0.37.3","tags":["x_refsource_MISC","x_transferred","Release Notes","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-46239","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-3q6m-v84f-6p9h"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/46xxx/CVE-2023-46239.json","tags":["advisory"]},{"url":"https://github.com/quic-go/quic-go","tags":["package"]},{"url":"https://ubuntu.com/security/CVE-2023-46239","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2023-46239","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2023-46239","title":"quic-go vulnerable to pointer dereference that can lead to panic","description":"quic-go is an implementation of the QUIC protocol in Go. Starting in version 0.37.0 and prior to version 0.37.3, by serializing an ACK frame after the CRYTPO that allows a node to complete the handshake, a remote node could trigger a nil pointer dereference (leading to a panic) when the node attempted to drop the Handshake packet number space. An attacker can bring down a quic-go node with very minimal effort. Completing the QUIC handshake only requires sending and receiving a few packets. Version 0.37.3 contains a patch. Versions before 0.37.0 are not affected.","status":"published","published":"2023-10-31T15:02:03.413Z","modified":"2024-09-05T17:37:20.453Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-248"],"updated_at":"2026-11-02T14:35:23.309349Z"}],"euvd":[{"id":"EUVD-2023-2633","description":"quic-go is an implementation of the QUIC protocol in Go. Starting in version 0.37.0 and prior to version 0.37.3, by serializing an ACK frame after the CRYTPO that allows a node to complete the handshake, a remote node could trigger a nil pointer dereference (leading to a panic) when the node attempted to drop the Handshake packet number space. An attacker can bring down a quic-go node with very minimal effort. Completing the QUIC handshake only requires sending and receiving a few packets. Version 0.37.3 contains a patch. Versions before 0.37.0 are not affected.","status":"published","published":"2023-10-31T15:02:03Z","modified":"2024-09-05T17:37:20Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-03T00:56:03.195853Z"}],"ghsa":[{"id":"GHSA-3q6m-v84f-6p9h","title":"quic-go vulnerable to pointer dereference that can lead to panic","description":"quic-go is an implementation of the [QUIC](https://datatracker.ietf.org/doc/html/rfc9000) transport protocol in Go. By serializing an ACK frame after the CRYTPO that allows a node to complete the handshake, a remote node could trigger a nil pointer dereference (leading to a panic) when the node attempted to drop the Handshake packet number space.\n\n**Impact**\n\nAn attacker can bring down a quic-go node with very minimal effort. Completing the QUIC handshake only requires sending and receiving a few packets.\n\n**Patches**\n\n[v0.37.3](https://github.com/quic-go/quic-go/releases/tag/v0.37.3) contains a patch. Versions before v0.37.0 are not affected.","status":"published","published":"2023-10-30T15:08:05Z","modified":"2023-11-09T15:59:41Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-248","CWE-476"],"updated_at":"2026-11-02T14:37:18.40412Z"}],"nvd":[{"id":"CVE-2023-46239","description":"quic-go is an implementation of the QUIC protocol in Go. Starting in version 0.37.0 and prior to version 0.37.3, by serializing an ACK frame after the CRYTPO that allows a node to complete the handshake, a remote node could trigger a nil pointer dereference (leading to a panic) when the node attempted to drop the Handshake packet number space. An attacker can bring down a quic-go node with very minimal effort. Completing the QUIC handshake only requires sending and receiving a few packets. Version 0.37.3 contains a patch. Versions before 0.37.0 are not affected.","status":"published","published":"2023-10-31T16:15:09.543Z","modified":"2026-06-17T06:30:29.663Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"secondary"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary"}],"cwes":["CWE-248","CWE-476"],"updated_at":"2026-11-02T14:08:41.047232Z"}],"osv":[{"id":"CVE-2023-46239","title":"quic-go vulnerable to pointer dereference that can lead to panic","description":"quic-go is an implementation of the QUIC protocol in Go. Starting in version 0.37.0 and prior to version 0.37.3, by serializing an ACK frame after the CRYTPO that allows a node to complete the handshake, a remote node could trigger a nil pointer dereference (leading to a panic) when the node attempted to drop the Handshake packet number space. An attacker can bring down a quic-go node with very minimal effort. Completing the QUIC handshake only requires sending and receiving a few packets. Version 0.37.3 contains a patch. Versions before 0.37.0 are not affected.","status":"published","published":"2023-10-31T15:02:03.413Z","modified":"2026-10-28T02:30:48.316208855Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-248"],"updated_at":"2026-11-02T15:44:34.287121Z"},{"id":"GHSA-3q6m-v84f-6p9h","title":"quic-go vulnerable to pointer dereference that can lead to panic","description":"quic-go is an implementation of the [QUIC](https://datatracker.ietf.org/doc/html/rfc9000) transport protocol in Go. By serializing an ACK frame after the CRYTPO that allows a node to complete the handshake, a remote node could trigger a nil pointer dereference (leading to a panic) when the node attempted to drop the Handshake packet number space.\n\n**Impact**\n\nAn attacker can bring down a quic-go node with very minimal effort. Completing the QUIC handshake only requires sending and receiving a few packets.\n\n**Patches**\n\n[v0.37.3](https://github.com/quic-go/quic-go/releases/tag/v0.37.3) contains a patch. Versions before v0.37.0 are not affected.","status":"published","published":"2023-10-30T15:08:05Z","modified":"2026-09-10T03:49:24.666665738Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-248","CWE-476"],"updated_at":"2026-11-02T15:46:36.092962Z"},{"id":"UBUNTU-CVE-2023-46239","description":"quic-go is an implementation of the QUIC protocol in Go. Starting in version 0.37.0 and prior to version 0.37.3, by serializing an ACK frame after the CRYTPO that allows a node to complete the handshake, a remote node could trigger a nil pointer dereference (leading to a panic) when the node attempted to drop the Handshake packet number space. An attacker can bring down a quic-go node with very minimal effort. Completing the QUIC handshake only requires sending and receiving a few packets. Version 0.37.3 contains a patch. Versions before 0.37.0 are not affected.","status":"published","published":"2023-10-31T16:15:00Z","modified":"2026-10-17T12:56:42.465439765Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T16:54:22.741943Z"},{"id":"GO-2023-2160","title":"Panic during QUIC handshake in github.com/quic-go/quic-go","description":"The QUIC handshake can cause a panic when processing a certain sequence of frames. A malicious peer can deliberately trigger this panic.","status":"published","published":"2023-11-02T21:44:01Z","modified":"2024-05-20T16:03:47Z","updated_at":"2026-11-02T15:47:01.185262Z"}]}}