{"id":"USN-8155-1","summary":"openssl vulnerabilities","details":"Viktor Dukhovni discovered that OpenSSL incorrectly negotiated the expected\npreferred key exchange group when used as a TLS 1.3 server. This could\nresult in a less preferred key exchange being used, contrary to\nexpectations. This issue only affected Ubuntu 25.10. (CVE-2026-2673)\n\nIgor Morgenstern discovered that OpenSSL incorrectly handled certain memory\noperations when used as a DANE client. A remote attacker could use this\nissue to cause OpenSSL to crash, resulting in a denial of service, or\npossibly execute arbitrary code. (CVE-2026-28387)\n\nIgor Morgenstern discovered that OpenSSL incorrectly handled certain memory\noperations when processing a delta CRL. A remote attacker could possibly\nuse this issue to cause OpenSSL to crash, resulting in a denial of service.\n(CVE-2026-28388)\n\nNathan Sportsman, Daniel Rhea, and Jaeho Nam discovered that OpenSSL\nincorrectly handled certain memory operations when processing a crafted CMS\nEnvelopedData message with KeyAgreeRecipientInfo. A remote attacker could\npossibly use this issue to cause OpenSSL to crash, resulting in a denial\nof service. (CVE-2026-28389)\n\nMuhammad Daffa, Joshua Rogers, and Chanho Kim discovered that OpenSSL\nincorrectly handled processing of a crafted CMS EnvelopedData message with\nKeyTransportRecipientInfo. A remote attacker could possibly use this issue\nto cause OpenSSL to crash, resulting in a denial of service.\n(CVE-2026-28390)\n\nQuoc Tran discovered that OpenSSL incorrectly handled hexadecimal\nconversion on 32-bit platforms. A remote attacker could use this issue to\ncause OpenSSL to crash, resulting in a denial of service, or possibly\nexecute arbitrary code. (CVE-2026-31789)\n\nSimo Sorce discovered that OpenSSL incorrectly handled failures in RSA KEM\nRSASVE Encapsulation. A remote attacker could possibly use this issue to\nobtain sensitive information. (CVE-2026-31790)","modified":"2026-04-14T09:05:24.952090Z","published":"2026-04-08T11:57:32Z","related":["UBUNTU-CVE-2026-2673","UBUNTU-CVE-2026-28387","UBUNTU-CVE-2026-28388","UBUNTU-CVE-2026-28389","UBUNTU-CVE-2026-28390","UBUNTU-CVE-2026-31789","UBUNTU-CVE-2026-31790"],"upstream":["CVE-2026-2673","CVE-2026-28387","CVE-2026-28388","CVE-2026-28389","CVE-2026-28390","CVE-2026-31789","CVE-2026-31790","UBUNTU-CVE-2026-2673","UBUNTU-CVE-2026-28387","UBUNTU-CVE-2026-28388","UBUNTU-CVE-2026-28389","UBUNTU-CVE-2026-28390","UBUNTU-CVE-2026-31789","UBUNTU-CVE-2026-31790"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-8155-1"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-2673"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-28387"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-28388"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-28389"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-28390"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-31789"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-31790"}],"affected":[{"package":{"name":"openssl","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/openssl@3.0.2-0ubuntu1.23?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.0.2-0ubuntu1.23"}]}],"versions":["1.1.1l-1ubuntu1","3.0.0-1ubuntu1","3.0.1-0ubuntu1","3.0.2-0ubuntu1","3.0.2-0ubuntu1.1","3.0.2-0ubuntu1.2","3.0.2-0ubuntu1.4","3.0.2-0ubuntu1.5","3.0.2-0ubuntu1.6","3.0.2-0ubuntu1.7","3.0.2-0ubuntu1.8","3.0.2-0ubuntu1.9","3.0.2-0ubuntu1.10","3.0.2-0ubuntu1.12","3.0.2-0ubuntu1.13","3.0.2-0ubuntu1.14","3.0.2-0ubuntu1.15","3.0.2-0ubuntu1.16","3.0.2-0ubuntu1.17","3.0.2-0ubuntu1.18","3.0.2-0ubuntu1.19","3.0.2-0ubuntu1.20","3.0.2-0ubuntu1.21"],"ecosystem_specific":{"binaries":[{"binary_version":"3.0.2-0ubuntu1.23","binary_name":"libssl-dev"},{"binary_version":"3.0.2-0ubuntu1.23","binary_name":"libssl3"},{"binary_version":"3.0.2-0ubuntu1.23","binary_name":"openssl"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8155-1.json","cves_map":{"cves":[{"severity":[{"score":"low","type":"Ubuntu"}],"id":"CVE-2026-28387"},{"severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"score":"low","type":"Ubuntu"}],"id":"CVE-2026-28388"},{"severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"score":"low","type":"Ubuntu"}],"id":"CVE-2026-28389"},{"severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"score":"low","type":"Ubuntu"}],"id":"CVE-2026-28390"},{"severity":[{"score":"low","type":"Ubuntu"}],"id":"CVE-2026-31789"},{"severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}],"id":"CVE-2026-31790"}],"ecosystem":"Ubuntu:22.04:LTS"}}},{"package":{"name":"openssl","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/openssl@3.0.13-0ubuntu3.9?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.0.13-0ubuntu3.9"}]}],"versions":["3.0.10-1ubuntu2","3.0.10-1ubuntu2.1","3.0.10-1ubuntu3","3.0.10-1ubuntu4","3.0.13-0ubuntu2","3.0.13-0ubuntu3","3.0.13-0ubuntu3.1","3.0.13-0ubuntu3.2","3.0.13-0ubuntu3.3","3.0.13-0ubuntu3.4","3.0.13-0ubuntu3.5","3.0.13-0ubuntu3.6","3.0.13-0ubuntu3.7"],"ecosystem_specific":{"binaries":[{"binary_version":"3.0.13-0ubuntu3.9","binary_name":"libssl-dev"},{"binary_version":"3.0.13-0ubuntu3.9","binary_name":"libssl3t64"},{"binary_version":"3.0.13-0ubuntu3.9","binary_name":"openssl"}],"availability":"No 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