{"id":"CVE-2020-4355","aliases":["EUVD-2020-25602","GHSA-6qmh-qf4p-53f5"],"status":"published","title":"IBM DB2 for Linux, UNIX and Windows (includes DB2 Connect Server) 9.7, 10.1, 10.5, 11.1, and 11.5...","description":"IBM DB2 for Linux, UNIX and Windows (includes DB2 Connect Server) 9.7, 10.1, 10.5, 11.1, and 11.5 is vulnerable to a denial of service, caused by improper handling of Secure Sockets Layer (SSL) renegotiation requests. By sending specially-crafted requests, a remote attacker could exploit this vulnerability to increase the resource usage on the system. IBM X-Force ID: 178507.","severity":{"version":"3.0","score":5.3,"vector":"CVSS:3.0/I:N/AV:N/S:U/C:N/UI:N/PR:N/A:L/AC:L/RC:C/RL:O/E:U","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.02161,"percentile":0.8234,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-400"],"published":"2020-07-01T14:25:30Z","modified":"2026-06-17T03:19:52Z","products":[{"vendor":"ibm","product":"db2"},{"vendor":"ibm","product":"db2 for linux- unix and windows"}],"references":[{"url":"https://www.ibm.com/support/pages/node/6242350","tags":["x_refsource_CONFIRM","x_transferred","Patch","Vendor Advisory"]},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/178507","tags":["vdb-entry","x_refsource_XF","x_transferred","VDB Entry","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-4355"},{"url":"https://github.com/advisories/GHSA-6qmh-qf4p-53f5"}],"sources":{"cve":[{"id":"CVE-2020-4355","description":"IBM DB2 for Linux, UNIX and Windows (includes DB2 Connect Server) 9.7, 10.1, 10.5, 11.1, and 11.5 is vulnerable to a denial of service, caused by improper handling of Secure Sockets Layer (SSL) renegotiation requests. By sending specially-crafted requests, a remote attacker could exploit this vulnerability to increase the resource usage on the system. IBM X-Force ID: 178507.","status":"published","published":"2020-07-01T14:25:30.996Z","modified":"2024-09-17T03:07:54.174Z","cvss":[{"version":"3.0","score":5.3,"vector":"CVSS:3.0/I:N/AV:N/S:U/C:N/UI:N/PR:N/A:L/AC:L/RC:C/RL:O/E:U","level":"medium","assessor":"cna"}],"updated_at":"2026-11-02T14:35:55.797746Z"}],"euvd":[{"id":"EUVD-2020-25602","description":"IBM DB2 for Linux, UNIX and Windows (includes DB2 Connect Server) 9.7, 10.1, 10.5, 11.1, and 11.5 is vulnerable to a denial of service, caused by improper handling of Secure Sockets Layer (SSL) renegotiation requests. By sending specially-crafted requests, a remote attacker could exploit this vulnerability to increase the resource usage on the system. IBM X-Force ID: 178507.","status":"published","published":"2020-07-01T14:25:30Z","modified":"2024-09-17T03:07:54Z","cvss":[{"version":"3.0","score":5.3,"vector":"CVSS:3.0/I:N/AV:N/S:U/C:N/UI:N/PR:N/A:L/AC:L/RC:C/RL:O/E:U","level":"medium"}],"updated_at":"2026-11-03T00:28:34.268174Z"}],"ghsa":[{"id":"GHSA-6qmh-qf4p-53f5","title":"IBM DB2 for Linux, UNIX and Windows (includes DB2 Connect Server) 9.7, 10.1, 10.5, 11.1, and 11.5...","description":"IBM DB2 for Linux, UNIX and Windows (includes DB2 Connect Server) 9.7, 10.1, 10.5, 11.1, and 11.5 is vulnerable to a denial of service, caused by improper handling of Secure Sockets Layer (SSL) renegotiation requests. By sending specially-crafted requests, a remote attacker could exploit this vulnerability to increase the resource usage on the system. IBM X-Force ID: 178507.","status":"published","published":"2022-05-24T17:22:14Z","modified":"2023-01-29T05:03:15Z","cwes":["CWE-400"],"updated_at":"2026-11-02T14:45:17.130191Z"}],"nvd":[{"id":"CVE-2020-4355","description":"IBM DB2 for Linux, UNIX and Windows (includes DB2 Connect Server) 9.7, 10.1, 10.5, 11.1, and 11.5 is vulnerable to a denial of service, caused by improper handling of Secure Sockets Layer (SSL) renegotiation requests. By sending specially-crafted requests, a remote attacker could exploit this vulnerability to increase the resource usage on the system. IBM X-Force ID: 178507.","status":"published","published":"2020-07-01T15:15:14.547Z","modified":"2026-06-17T03:19:52.397Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium","assessor":"primary"},{"version":"3.0","score":5.3,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium","assessor":"secondary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"updated_at":"2026-11-02T14:06:08.145904Z"}]}}