rhsa-2018_3090
Vulnerability from csaf_redhat
Published
2018-10-30 09:51
Modified
2024-11-05 20:48
Summary
Red Hat Security Advisory: ovmf security, bug fix, and enhancement update

Notes

Topic
An update for ovmf is now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.
Details
OVMF (Open Virtual Machine Firmware) is a project to enable UEFI support for Virtual Machines. This package contains a sample 64-bit UEFI firmware for QEMU and KVM. The following packages have been upgraded to a later upstream version: ovmf (20180508). (BZ#1559542) Security Fix(es): * openssl: Handling of crafted recursive ASN.1 structures can cause a stack overflow and resulting denial of service (CVE-2018-0739) For more details about the security issue(s), including the impact, a CVSS score, and other related information, refer to the CVE page(s) listed in the References section. Additional Changes: For detailed information on changes in this release, see the Red Hat Enterprise Linux 7.6 Release Notes linked from the References section.
Terms of Use
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 Red Hat Inc. and provide a link to the original.


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{
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      "text": "Moderate"
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    "category": "csaf_security_advisory",
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    "distribution": {
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        "text": "An update for ovmf is now available for Red Hat Enterprise Linux 7.\n\nRed Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.",
        "title": "Topic"
      },
      {
        "category": "general",
        "text": "OVMF (Open Virtual Machine Firmware) is a project to enable UEFI support for Virtual Machines. This package contains a sample 64-bit UEFI firmware for QEMU and KVM.\n\nThe following packages have been upgraded to a later upstream version: ovmf (20180508). (BZ#1559542)\n\nSecurity Fix(es):\n\n* openssl: Handling of crafted recursive ASN.1 structures can cause a stack overflow and resulting denial of service (CVE-2018-0739)\n\nFor more details about the security issue(s), including the impact, a CVSS score, and other related information, refer to the CVE page(s) listed in the References section.\n\nAdditional Changes:\n\nFor detailed information on changes in this release, see the Red Hat Enterprise Linux 7.6 Release Notes linked from the References section.",
        "title": "Details"
      },
      {
        "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 Red Hat Inc. and provide a link to the original.",
        "title": "Terms of Use"
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        "summary": "Canonical URL",
        "url": "https://security.access.redhat.com/data/csaf/v2/advisories/2018/rhsa-2018_3090.json"
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    ],
    "title": "Red Hat Security Advisory: ovmf security, bug fix, and enhancement update",
    "tracking": {
      "current_release_date": "2024-11-05T20:48:33+00:00",
      "generator": {
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          "number": "1",
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        "relates_to_product_reference": "7Server-Alt-optional-7.6"
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  },
  "vulnerabilities": [
    {
      "cve": "CVE-2018-0739",
      "cwe": {
        "id": "CWE-400",
        "name": "Uncontrolled Resource Consumption"
      },
      "discovery_date": "2018-03-28T00:00:00+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "1561266"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "Constructed ASN.1 types with a recursive definition (such as can be found in PKCS7) could eventually exceed the stack given malicious input with excessive recursion. This could result in a Denial Of Service attack. There are no such structures used within SSL/TLS that come from untrusted sources so this is considered safe. Fixed in OpenSSL 1.1.0h (Affected 1.1.0-1.1.0g). Fixed in OpenSSL 1.0.2o (Affected 1.0.2b-1.0.2n).",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "openssl: Handling of crafted recursive ASN.1 structures can cause a stack overflow and resulting denial of service",
          "title": "Vulnerability summary"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
        }
      ],
      "product_status": {
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          "7Server-7.6:OVMF-0:20180508-3.gitee3198e672e2.el7.noarch",
          "7Server-7.6:ovmf-0:20180508-3.gitee3198e672e2.el7.src",
          "7Server-Alt-optional-7.6:AAVMF-0:20180508-3.gitee3198e672e2.el7.noarch",
          "7Server-Alt-optional-7.6:OVMF-0:20180508-3.gitee3198e672e2.el7.noarch",
          "7Server-Alt-optional-7.6:ovmf-0:20180508-3.gitee3198e672e2.el7.src"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2018-0739"
        },
        {
          "category": "external",
          "summary": "RHBZ#1561266",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1561266"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2018-0739",
          "url": "https://www.cve.org/CVERecord?id=CVE-2018-0739"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2018-0739",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2018-0739"
        },
        {
          "category": "external",
          "summary": "https://www.openssl.org/news/secadv/20180327.txt",
          "url": "https://www.openssl.org/news/secadv/20180327.txt"
        }
      ],
      "release_date": "2018-03-27T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2018-10-30T09:51:29+00:00",
          "details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258",
          "product_ids": [
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            "7Server-7.6:OVMF-0:20180508-3.gitee3198e672e2.el7.noarch",
            "7Server-7.6:ovmf-0:20180508-3.gitee3198e672e2.el7.src",
            "7Server-Alt-optional-7.6:AAVMF-0:20180508-3.gitee3198e672e2.el7.noarch",
            "7Server-Alt-optional-7.6:OVMF-0:20180508-3.gitee3198e672e2.el7.noarch",
            "7Server-Alt-optional-7.6:ovmf-0:20180508-3.gitee3198e672e2.el7.src"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2018:3090"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 6.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
            "version": "3.0"
          },
          "products": [
            "7Server-7.6:AAVMF-0:20180508-3.gitee3198e672e2.el7.noarch",
            "7Server-7.6:OVMF-0:20180508-3.gitee3198e672e2.el7.noarch",
            "7Server-7.6:ovmf-0:20180508-3.gitee3198e672e2.el7.src",
            "7Server-Alt-optional-7.6:AAVMF-0:20180508-3.gitee3198e672e2.el7.noarch",
            "7Server-Alt-optional-7.6:OVMF-0:20180508-3.gitee3198e672e2.el7.noarch",
            "7Server-Alt-optional-7.6:ovmf-0:20180508-3.gitee3198e672e2.el7.src"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
        }
      ],
      "title": "openssl: Handling of crafted recursive ASN.1 structures can cause a stack overflow and resulting denial of service"
    }
  ]
}


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