{
  "document": {
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      "text": "Medium"
    },
    "category": "csaf_vex",
    "csaf_version": "2.0",
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        "label": "WHITE",
        "url": "https://www.first.org/tlp/"
      }
    },
    "lang": "en",
    "notes": [
      {
        "category": "legal_disclaimer",
        "text": "This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Cloud Linux Inc. and provide a link to the original.",
        "title": "Terms of Use"
      }
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      "contact_details": "https://tuxcare.com/contact/",
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        "url": "https://security.tuxcare.com/csaf/v2/els_alt_common/el8/vex/2018/cve-2018-0733-els_alt_common-el8.json"
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      "generator": {
        "date": "2026-06-12T16:47:44Z",
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          "date": "2018-03-27T21:29:00Z",
          "number": "1",
          "summary": "Initial version"
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        {
          "date": "2026-06-12T16:47:44Z",
          "number": "2",
          "summary": "Official Publication"
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      "status": "final",
      "version": "2"
    },
    "title": "Security update on CVE-2018-0733"
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  },
  "vulnerabilities": [
    {
      "cve": "CVE-2018-0733",
      "notes": [
        {
          "category": "description",
          "text": "Because of an implementation bug the PA-RISC CRYPTO_memcmp function is effectively reduced to only comparing the least significant bit of each byte. This allows an attacker to forge messages that would be considered as authenticated in an amount of tries lower than that guaranteed by the security claims of the scheme. The module can only be compiled by the HP-UX assembler, so that only HP-UX PA-RISC targets are affected. Fixed in OpenSSL 1.1.0h (Affected 1.1.0-1.1.0g).",
          "title": "Vulnerability description"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
        },
        {
          "category": "other",
          "text": "TuxCare has assessed that this vulnerability does not impact any currently supported TuxCare products. This evaluation may change as new information becomes available. For additional details regarding this vulnerability and affected products, refer to the provided references.",
          "title": "Statement"
        }
      ],
      "product_status": {
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          "CentOS-8:alt-openssl11-1:1.1.1w-3.2.el8.x86_64",
          "CentOS-8:alt-openssl11-1:1.1.1w-3.3.el8.x86_64",
          "CentOS-8:alt-openssl11-devel-1:1.1.1w-3.1.el8.x86_64",
          "CentOS-8:alt-openssl11-devel-1:1.1.1w-3.2.el8.x86_64",
          "CentOS-8:alt-openssl11-devel-1:1.1.1w-3.3.el8.x86_64",
          "CentOS-8:alt-openssl11-libs-1:1.1.1w-3.1.el8.x86_64",
          "CentOS-8:alt-openssl11-libs-1:1.1.1w-3.2.el8.x86_64",
          "CentOS-8:alt-openssl11-libs-1:1.1.1w-3.3.el8.x86_64"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://cve.tuxcare.com/els-lang/cve/CVE-2018-0733"
        },
        {
          "category": "external",
          "summary": "http://www.oracle.com/technetwork/security-advisory/cpujul2018-4258247.html",
          "url": "http://www.oracle.com/technetwork/security-advisory/cpujul2018-4258247.html"
        },
        {
          "category": "external",
          "summary": "http://www.oracle.com/technetwork/security-advisory/cpuoct2018-4428296.html",
          "url": "http://www.oracle.com/technetwork/security-advisory/cpuoct2018-4428296.html"
        },
        {
          "category": "external",
          "summary": "http://www.securityfocus.com/bid/103517",
          "url": "http://www.securityfocus.com/bid/103517"
        },
        {
          "category": "external",
          "summary": "http://www.securitytracker.com/id/1040576",
          "url": "http://www.securitytracker.com/id/1040576"
        },
        {
          "category": "external",
          "summary": "https://git.openssl.org/gitweb/?p=openssl.git%3Ba=commitdiff%3Bh=56d5a4bfcaf37fa420aef2bb881aa55e61cf5f2f",
          "url": "https://git.openssl.org/gitweb/?p=openssl.git%3Ba=commitdiff%3Bh=56d5a4bfcaf37fa420aef2bb881aa55e61cf5f2f"
        },
        {
          "category": "external",
          "summary": "https://security.gentoo.org/glsa/201811-21",
          "url": "https://security.gentoo.org/glsa/201811-21"
        },
        {
          "category": "external",
          "summary": "https://security.netapp.com/advisory/ntap-20180330-0002/",
          "url": "https://security.netapp.com/advisory/ntap-20180330-0002/"
        },
        {
          "category": "external",
          "summary": "https://www.openssl.org/news/secadv/20180327.txt",
          "url": "https://www.openssl.org/news/secadv/20180327.txt"
        },
        {
          "category": "external",
          "summary": "https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html",
          "url": "https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html"
        },
        {
          "category": "external",
          "summary": "https://www.oracle.com/technetwork/security-advisory/cpujan2019-5072801.html",
          "url": "https://www.oracle.com/technetwork/security-advisory/cpujan2019-5072801.html"
        },
        {
          "category": "external",
          "summary": "https://www.oracle.com/technetwork/security-advisory/cpujul2019-5072835.html",
          "url": "https://www.oracle.com/technetwork/security-advisory/cpujul2019-5072835.html"
        },
        {
          "category": "external",
          "summary": "https://www.tenable.com/security/tns-2018-04",
          "url": "https://www.tenable.com/security/tns-2018-04"
        },
        {
          "category": "external",
          "summary": "https://www.tenable.com/security/tns-2018-06",
          "url": "https://www.tenable.com/security/tns-2018-06"
        },
        {
          "category": "external",
          "summary": "https://www.tenable.com/security/tns-2018-07",
          "url": "https://www.tenable.com/security/tns-2018-07"
        }
      ],
      "release_date": "2018-03-27T21:29:00Z",
      "scores": [
        {
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            "accessComplexity": "MEDIUM",
            "accessVector": "NETWORK",
            "authentication": "NONE",
            "availabilityImpact": "NONE",
            "baseScore": 4.3,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "PARTIAL",
            "vectorString": "AV:N/AC:M/Au:N/C:N/I:P/A:N",
            "version": "2.0"
          },
          "cvss_v3": {
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            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 5.9,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N",
            "version": "3.0"
          },
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        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
        },
        {
          "category": "impact",
          "date": "2026-06-12T13:13:08.404596Z",
          "details": "Not affected: the deployed OpenSSL version is 1.1.1w, while CVE-2018-0733 only impacts OpenSSL 1.1.0 through 1.1.0g and was corrected prior to the first 1.1.1 release in September 2018. Additionally, the bug resides in an HP‑UX PA‑RISC–only assembler module for CRYPTO_memcmp, which is not present in Linux builds, so the vulnerable code path is not reachable in this environment.",
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