{"id":"USN-6592-2","summary":"libssh vulnerabilities","details":"USN-6592-1 fixed vulnerabilities in libssh. This update provides the\ncorresponding updates for Ubuntu 16.04 LTS and Ubuntu 18.04 LTS.\n\nOriginal advisory details:\n\n It was discovered that libssh incorrectly handled the ProxyCommand and the\n ProxyJump features. A remote attacker could possibly use this issue to\n inject malicious code into the command of the features mentioned through\n the hostname parameter. (CVE-2023-6004)\n\n It was discovered that libssh incorrectly handled return codes when\n performing message digest operations. A remote attacker could possibly use\n this issue to cause libssh to crash, obtain sensitive information, or\n execute arbitrary code. (CVE-2023-6918)\n","modified":"2026-04-22T10:44:23.127748Z","published":"2024-02-05T13:02:16Z","related":["UBUNTU-CVE-2023-6004","UBUNTU-CVE-2023-6918"],"upstream":["CVE-2023-6004","CVE-2023-6918","UBUNTU-CVE-2023-6004","UBUNTU-CVE-2023-6918"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-6592-2"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2023-6004"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2023-6918"}],"affected":[{"package":{"name":"libssh","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/libssh@0.6.3-4.3ubuntu0.6+esm1?arch=source&distro=esm-infra/xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.6.3-4.3ubuntu0.6+esm1"}]}],"versions":["0.6.3-3ubuntu3","0.6.3-4.1","0.6.3-4.2","0.6.3-4.2ubuntu1","0.6.3-4.3","0.6.3-4.3ubuntu0.1","0.6.3-4.3ubuntu0.2","0.6.3-4.3ubuntu0.5","0.6.3-4.3ubuntu0.6"],"ecosystem_specific":{"binaries":[{"binary_version":"0.6.3-4.3ubuntu0.6+esm1","binary_name":"libssh-4"},{"binary_version":"0.6.3-4.3ubuntu0.6+esm1","binary_name":"libssh-gcrypt-4"}],"availability":"Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"},"database_specific":{"cves_map":{"ecosystem":"Ubuntu:Pro:16.04:LTS","cves":[{"severity":[{"score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:L","type":"CVSS_V3"},{"score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:L","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}],"id":"CVE-2023-6004"},{"severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","type":"CVSS_V3"},{"score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}],"id":"CVE-2023-6918"}]},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-6592-2.json"}},{"package":{"name":"libssh","ecosystem":"Ubuntu:Pro:18.04:LTS","purl":"pkg:deb/ubuntu/libssh@0.8.0~20170825.94fa1e38-1ubuntu0.7+esm3?arch=source&distro=esm-infra/bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.8.0~20170825.94fa1e38-1ubuntu0.7+esm3"}]}],"versions":["0.7.5-1","0.8.0~20170825.94fa1e38-1","0.8.0~20170825.94fa1e38-1build1","0.8.0~20170825.94fa1e38-1ubuntu0.1","0.8.0~20170825.94fa1e38-1ubuntu0.2","0.8.0~20170825.94fa1e38-1ubuntu0.5","0.8.0~20170825.94fa1e38-1ubuntu0.6","0.8.0~20170825.94fa1e38-1ubuntu0.7"],"ecosystem_specific":{"binaries":[{"binary_version":"0.8.0~20170825.94fa1e38-1ubuntu0.7+esm3","binary_name":"libssh-4"},{"binary_version":"0.8.0~20170825.94fa1e38-1ubuntu0.7+esm3","binary_name":"libssh-gcrypt-4"}],"availability":"Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"},"database_specific":{"cves_map":{"ecosystem":"Ubuntu:Pro:18.04:LTS","cves":[{"severity":[{"score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:L","type":"CVSS_V3"},{"score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:L","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}],"id":"CVE-2023-6004"},{"severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","type":"CVSS_V3"},{"score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}],"id":"CVE-2023-6918"}]},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-6592-2.json"}}],"schema_version":"1.7.5"}