{"id":"CVE-2023-30575","aliases":["BIT-guacamole-2023-30575","BIT-guacamole-server-2023-30575","EUVD-2023-34956","GHSA-jcgp-rv79-q77m","UBUNTU-CVE-2023-30575"],"status":"published","title":"Apache Guacamole: Incorrect calculation of Guacamole protocol element lengths","description":"Apache Guacamole 1.5.1 and older may incorrectly calculate the lengths of instruction elements sent during the Guacamole protocol handshake, potentially allowing an attacker to inject Guacamole instructions during the handshake through specially-crafted data.","severity":{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.01007,"percentile":0.6328,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-131","CWE-74"],"published":"2023-06-07T08:06:36Z","modified":"2026-10-28T02:30:43Z","fixes":[{"ecosystem":"Bitnami","package":"guacamole","fixed_in":["1.5.2"],"sources":["osv"]},{"ecosystem":"Bitnami","package":"guacamole-server","fixed_in":["1.5.2"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Bitnami","package":"guacamole","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"1.5.2"}]}]},{"source":"osv","ecosystem":"Bitnami","package":"guacamole-server","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"1.5.2"}]}]},{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"guacamole-client","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.8.3-1.1","0.8.3-1.2"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"guacamole-client","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.9.9+dfsg-1"]}],"products":[{"vendor":"apache","product":"guacamole"},{"vendor":"apache software foundation","product":"apache guacamole"}],"references":[{"url":"https://lists.apache.org/thread/tn63n2lon0h5p45oft834t1dqvvxownv","tags":["vendor-advisory","x_transferred","Mailing List","Third Party Advisory","web","advisory","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-30575","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-jcgp-rv79-q77m"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/30xxx/CVE-2023-30575.json","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2023-30575","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2023-30575","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2023-30575","title":"Apache Guacamole: Incorrect calculation of Guacamole protocol element lengths","description":"Apache Guacamole 1.5.1 and older may incorrectly calculate the lengths of instruction elements sent during the Guacamole protocol handshake, potentially allowing an attacker to inject Guacamole instructions during the handshake through specially-crafted data.\n\n","status":"published","published":"2023-06-07T08:06:36.061Z","modified":"2024-10-10T14:39:33.936Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N","level":"medium","assessor":"cna"}],"cwes":["CWE-131"],"updated_at":"2026-11-02T14:35:22.309324Z"}],"euvd":[{"id":"EUVD-2023-34956","description":"Apache Guacamole 1.5.1 and older may incorrectly calculate the lengths of instruction elements sent during the Guacamole protocol handshake, potentially allowing an attacker to inject Guacamole instructions during the handshake through specially-crafted data.\n\n","status":"published","published":"2023-06-07T08:06:36Z","modified":"2024-10-10T14:39:33Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N","level":"medium"}],"updated_at":"2026-11-03T00:27:41.519615Z"}],"ghsa":[{"id":"GHSA-jcgp-rv79-q77m","title":"Apache Guacamole 1.5.1 and older may incorrectly calculate the lengths of instruction elements...","description":"Apache Guacamole 1.5.1 and older may incorrectly calculate the lengths of instruction elements sent during the Guacamole protocol handshake, potentially allowing an attacker to inject Guacamole instructions during the handshake through specially-crafted data.\n\n","status":"published","published":"2023-06-07T09:30:32Z","modified":"2024-04-04T04:39:15Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N","level":"medium"}],"cwes":["CWE-74","CWE-131"],"updated_at":"2026-11-02T14:56:26.167088Z"}],"nvd":[{"id":"CVE-2023-30575","description":"Apache Guacamole 1.5.1 and older may incorrectly calculate the lengths of instruction elements sent during the Guacamole protocol handshake, potentially allowing an attacker to inject Guacamole instructions during the handshake through specially-crafted data.\n\n","status":"published","published":"2023-06-07T09:15:09.993Z","modified":"2026-06-17T05:55:03.44Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N","level":"medium","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:H/A:N","level":"high","assessor":"primary"}],"cwes":["CWE-131"],"updated_at":"2026-11-02T14:08:05.329837Z"}],"osv":[{"id":"CVE-2023-30575","title":"Apache Guacamole: Incorrect calculation of Guacamole protocol element lengths","description":"Apache Guacamole 1.5.1 and older may incorrectly calculate the lengths of instruction elements sent during the Guacamole protocol handshake, potentially allowing an attacker to inject Guacamole instructions during the handshake through specially-crafted data.\n\n","status":"published","published":"2023-06-07T08:06:36.061Z","modified":"2026-10-28T02:30:43.031183706Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N","level":"medium"}],"cwes":["CWE-131"],"updated_at":"2026-11-02T15:44:31.790231Z"},{"id":"UBUNTU-CVE-2023-30575","description":"Apache Guacamole 1.5.1 and older may incorrectly calculate the lengths of instruction elements sent during the Guacamole protocol handshake, potentially allowing an attacker to inject Guacamole instructions during the handshake through specially-crafted data.","status":"published","published":"2023-06-07T09:15:00Z","modified":"2025-10-24T05:01:56Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N","level":"medium"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high"}],"updated_at":"2026-11-02T16:54:20.997471Z"},{"id":"BIT-guacamole-2023-30575","description":"Apache Guacamole 1.5.1 and older may incorrectly calculate the lengths of instruction elements sent during the Guacamole protocol handshake, potentially allowing an attacker to inject Guacamole instructions during the handshake through specially-crafted data.","status":"published","published":"2024-03-06T10:53:11.906Z","modified":"2024-03-06T11:25:28.861Z","updated_at":"2026-11-02T15:28:31.02759Z"},{"id":"BIT-guacamole-server-2023-30575","description":"Apache Guacamole 1.5.1 and older may incorrectly calculate the lengths of instruction elements sent during the Guacamole protocol handshake, potentially allowing an attacker to inject Guacamole instructions during the handshake through specially-crafted data.","status":"published","published":"2024-03-06T10:53:14.005Z","modified":"2024-03-06T11:25:28.861Z","updated_at":"2026-11-02T15:28:31.02759Z"}]}}