{"affected":[{"affectedData":[{"product":"libssh","vendor":"n/a","versions":[{"status":"affected","version":"libssh-2"}]}],"source":"secalert@redhat.com"}],"configurations":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:a:libssh:libssh:*:*:*:*:*:*:*:*","matchCriteriaId":"4ABFA49F-EB6C-45E4-8347-1E0A0FD65908","versionEndIncluding":"0.9.6","versionStartIncluding":"0.9.1","vulnerable":true},{"criteria":"cpe:2.3:a:libssh:libssh:*:*:*:*:*:*:*:*","matchCriteriaId":"B02C8B4E-0AD2-44B9-B32A-21986D00F9F5","versionEndIncluding":"0.10.4","versionStartIncluding":"0.10.0","vulnerable":true}],"negate":false,"operator":"OR"}]},{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:fedoraproject:fedora:37:*:*:*:*:*:*:*","matchCriteriaId":"E30D0E6F-4AE8-4284-8716-991DFA48CC5D","vulnerable":true}],"negate":false,"operator":"OR"}]},{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*","matchCriteriaId":"F4CFF558-3C47-480D-A2F0-BABF26042943","vulnerable":true},{"criteria":"cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*","matchCriteriaId":"7F6FB57C-2BC7-487C-96DD-132683AEB35D","vulnerable":true}],"negate":false,"operator":"OR"}]}],"cveTags":[],"descriptions":[{"lang":"en","value":"A vulnerability was found in libssh, where the authentication check of the connecting client can be bypassed in the`pki_verify_data_signature` function in memory allocation problems. This issue may happen if there is insufficient memory or the memory usage is limited. The problem is caused by the return value `rc,` which is initialized to SSH_ERROR and later rewritten to save the return value of the function call `pki_key_check_hash_compatible.` The value of the variable is not changed between this point and the cryptographic verification. Therefore any error between them calls `goto error` returning SSH_OK."}],"id":"CVE-2023-2283","lastModified":"2026-06-17T05:52:11.247","metrics":{"cvssMetricV31":[{"cvssData":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":6.5,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","version":"3.1"},"exploitabilityScore":3.9,"impactScore":2.5,"source":"nvd@nist.gov","type":"Primary"}]},"published":"2023-05-26T18:15:13.770","references":[{"source":"secalert@redhat.com","url":"http://packetstormsecurity.com/files/172861/libssh-0.9.6-0.10.4-pki_verify_data_signature-Authorization-Bypass.html"},{"source":"secalert@redhat.com","tags":["Third Party Advisory"],"url":"https://access.redhat.com/security/cve/CVE-2023-2283"},{"source":"secalert@redhat.com","tags":["Issue Tracking","Third Party Advisory"],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2189736"},{"source":"secalert@redhat.com","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/27PD44ALQTZXX7K6JAM3BXBUHYA6DFFN/"},{"source":"secalert@redhat.com","url":"https://security.gentoo.org/glsa/202312-05"},{"source":"secalert@redhat.com","url":"https://security.netapp.com/advisory/ntap-20240201-0005/"},{"source":"secalert@redhat.com","tags":["Vendor Advisory"],"url":"https://www.libssh.org/security/advisories/CVE-2023-2283.txt"},{"source":"af854a3a-2127-422b-91ae-364da2661108","url":"http://packetstormsecurity.com/files/172861/libssh-0.9.6-0.10.4-pki_verify_data_signature-Authorization-Bypass.html"},{"source":"af854a3a-2127-422b-91ae-364da2661108","url":"http://seclists.org/fulldisclosure/2025/Feb/18"},{"source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Third Party Advisory"],"url":"https://access.redhat.com/security/cve/CVE-2023-2283"},{"source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Issue Tracking","Third Party Advisory"],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2189736"},{"source":"af854a3a-2127-422b-91ae-364da2661108","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/27PD44ALQTZXX7K6JAM3BXBUHYA6DFFN/"},{"source":"af854a3a-2127-422b-91ae-364da2661108","url":"https://security.gentoo.org/glsa/202312-05"},{"source":"af854a3a-2127-422b-91ae-364da2661108","url":"https://security.netapp.com/advisory/ntap-20240201-0005/"},{"source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Vendor Advisory"],"url":"https://www.libssh.org/security/advisories/CVE-2023-2283.txt"}],"sourceIdentifier":"secalert@redhat.com","vulnStatus":"Modified","weaknesses":[{"description":[{"lang":"en","value":"CWE-287"}],"source":"secalert@redhat.com","type":"Secondary"},{"description":[{"lang":"en","value":"CWE-287"}],"source":"nvd@nist.gov","type":"Primary"}]}