{
  "threat_severity" : "Moderate",
  "public_date" : "2023-05-05T00:00:00Z",
  "bugzilla" : {
    "description" : "libssh: authorization bypass in pki_verify_data_signature",
    "id" : "2189736",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=2189736"
  },
  "cvss3" : {
    "cvss3_base_score" : "4.8",
    "cvss3_scoring_vector" : "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N",
    "status" : "verified"
  },
  "cwe" : "CWE-287",
  "details" : [ "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.", "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." ],
  "affected_release" : [ {
    "product_name" : "Red Hat Enterprise Linux 8",
    "release_date" : "2023-06-27T00:00:00Z",
    "advisory" : "RHSA-2023:3839",
    "cpe" : "cpe:/a:redhat:enterprise_linux:8",
    "package" : "libssh-0:0.9.6-10.el8_8"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8",
    "release_date" : "2023-06-27T00:00:00Z",
    "advisory" : "RHSA-2023:3839",
    "cpe" : "cpe:/o:redhat:enterprise_linux:8",
    "package" : "libssh-0:0.9.6-10.el8_8"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8.6 Extended Update Support",
    "release_date" : "2024-01-29T00:00:00Z",
    "advisory" : "RHSA-2024:0538",
    "cpe" : "cpe:/a:redhat:rhel_eus:8.6",
    "package" : "libssh-0:0.9.6-4.el8_6"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9",
    "release_date" : "2023-11-07T00:00:00Z",
    "advisory" : "RHSA-2023:6643",
    "cpe" : "cpe:/a:redhat:enterprise_linux:9",
    "package" : "libssh-0:0.10.4-11.el9"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9",
    "release_date" : "2023-11-07T00:00:00Z",
    "advisory" : "RHSA-2023:6643",
    "cpe" : "cpe:/o:redhat:enterprise_linux:9",
    "package" : "libssh-0:0.10.4-11.el9"
  } ],
  "package_state" : [ {
    "product_name" : "CloudForms Management Engine 5",
    "fix_state" : "Out of support scope",
    "package_name" : "libssh2",
    "cpe" : "cpe:/a:redhat:cloudforms_managementengine:5"
  }, {
    "product_name" : "Red Hat Enterprise Linux 6",
    "fix_state" : "Out of support scope",
    "package_name" : "libssh2",
    "cpe" : "cpe:/o:redhat:enterprise_linux:6"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7",
    "fix_state" : "Out of support scope",
    "package_name" : "libssh",
    "cpe" : "cpe:/o:redhat:enterprise_linux:7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7",
    "fix_state" : "Out of support scope",
    "package_name" : "libssh2",
    "cpe" : "cpe:/o:redhat:enterprise_linux:7"
  } ],
  "references" : [ "https://www.cve.org/CVERecord?id=CVE-2023-2283\nhttps://nvd.nist.gov/vuln/detail/CVE-2023-2283\nhttps://www.libssh.org/security/advisories/CVE-2023-2283.txt" ],
  "name" : "CVE-2023-2283",
  "csaw" : false
}