rhsa-2021_1791
Vulnerability from csaf_redhat
Published
2021-05-18 14:16
Modified
2024-11-22 15:54
Summary
Red Hat Security Advisory: spice-vdagent security and bug fix update

Notes

Topic
An update for spice-vdagent is now available for Red Hat Enterprise Linux 8. 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
The spice-vdagent packages provide a SPICE agent for Linux guests. Security Fix(es): * spice-vdagent: possible file transfer DoS and information leak via active_xfers hash map (CVE-2020-25651) * spice-vdagent: UNIX domain socket peer PID retrieved via SO_PEERCRED is subject to race condition (CVE-2020-25653) * spice-vdagent: memory DoS via arbitrary entries in active_xfers hash table (CVE-2020-25650) * spice-vdagent: possibility to exhaust file descriptors in vdagentd (CVE-2020-25652) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, 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 8.4 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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  "vulnerabilities": [
    {
      "acknowledgments": [
        {
          "names": [
            "Matthias Gerstner"
          ],
          "organization": "SUSE Security Team"
        }
      ],
      "cve": "CVE-2020-25650",
      "cwe": {
        "id": "CWE-770",
        "name": "Allocation of Resources Without Limits or Throttling"
      },
      "discovery_date": "2020-09-22T00:00:00+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "1886345"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in the way the spice-vdagentd daemon handled file transfers from the host system to the virtual machine. This flaw allows any unprivileged local guest user with access to the UNIX domain socket path `/run/spice-vdagentd/spice-vdagent-sock` to perform a memory denial of service for spice-vdagentd or other processes in the VM system. The highest threat from this vulnerability is to system availability.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "spice-vdagent: memory DoS via arbitrary entries in active_xfers hash table",
          "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"
        }
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      "cve": "CVE-2020-25653",
      "cwe": {
        "id": "CWE-200",
        "name": "Exposure of Sensitive Information to an Unauthorized Actor"
      },
      "discovery_date": "2020-09-22T00:00:00+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "1886372"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A race condition vulnerability was found in the way the spice-vdagentd daemon handled new client connections. This flaw allows an unprivileged local guest user to become the active agent for spice-vdagentd, possibly resulting in a denial of service or information leakage from the host. The highest threat from this vulnerability is to confidentiality as well as system availability.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "spice-vdagent: UNIX domain socket peer PID retrieved via SO_PEERCRED is subject to race condition",
          "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": {
        "fixed": [
          "AppStream-8.4.0.GA:spice-vdagent-0:0.20.0-3.el8.aarch64",
          "AppStream-8.4.0.GA:spice-vdagent-0:0.20.0-3.el8.ppc64le",
          "AppStream-8.4.0.GA:spice-vdagent-0:0.20.0-3.el8.s390x",
          "AppStream-8.4.0.GA:spice-vdagent-0:0.20.0-3.el8.src",
          "AppStream-8.4.0.GA:spice-vdagent-0:0.20.0-3.el8.x86_64",
          "AppStream-8.4.0.GA:spice-vdagent-debuginfo-0:0.20.0-3.el8.aarch64",
          "AppStream-8.4.0.GA:spice-vdagent-debuginfo-0:0.20.0-3.el8.ppc64le",
          "AppStream-8.4.0.GA:spice-vdagent-debuginfo-0:0.20.0-3.el8.s390x",
          "AppStream-8.4.0.GA:spice-vdagent-debuginfo-0:0.20.0-3.el8.x86_64",
          "AppStream-8.4.0.GA:spice-vdagent-debugsource-0:0.20.0-3.el8.aarch64",
          "AppStream-8.4.0.GA:spice-vdagent-debugsource-0:0.20.0-3.el8.ppc64le",
          "AppStream-8.4.0.GA:spice-vdagent-debugsource-0:0.20.0-3.el8.s390x",
          "AppStream-8.4.0.GA:spice-vdagent-debugsource-0:0.20.0-3.el8.x86_64"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2020-25653"
        },
        {
          "category": "external",
          "summary": "RHBZ#1886372",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1886372"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2020-25653",
          "url": "https://www.cve.org/CVERecord?id=CVE-2020-25653"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2020-25653",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-25653"
        },
        {
          "category": "external",
          "summary": "https://www.openwall.com/lists/oss-security/2020/11/04/1",
          "url": "https://www.openwall.com/lists/oss-security/2020/11/04/1"
        }
      ],
      "release_date": "2020-11-03T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2021-05-18T14:16:23+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": [
            "AppStream-8.4.0.GA:spice-vdagent-0:0.20.0-3.el8.aarch64",
            "AppStream-8.4.0.GA:spice-vdagent-0:0.20.0-3.el8.ppc64le",
            "AppStream-8.4.0.GA:spice-vdagent-0:0.20.0-3.el8.s390x",
            "AppStream-8.4.0.GA:spice-vdagent-0:0.20.0-3.el8.src",
            "AppStream-8.4.0.GA:spice-vdagent-0:0.20.0-3.el8.x86_64",
            "AppStream-8.4.0.GA:spice-vdagent-debuginfo-0:0.20.0-3.el8.aarch64",
            "AppStream-8.4.0.GA:spice-vdagent-debuginfo-0:0.20.0-3.el8.ppc64le",
            "AppStream-8.4.0.GA:spice-vdagent-debuginfo-0:0.20.0-3.el8.s390x",
            "AppStream-8.4.0.GA:spice-vdagent-debuginfo-0:0.20.0-3.el8.x86_64",
            "AppStream-8.4.0.GA:spice-vdagent-debugsource-0:0.20.0-3.el8.aarch64",
            "AppStream-8.4.0.GA:spice-vdagent-debugsource-0:0.20.0-3.el8.ppc64le",
            "AppStream-8.4.0.GA:spice-vdagent-debugsource-0:0.20.0-3.el8.s390x",
            "AppStream-8.4.0.GA:spice-vdagent-debugsource-0:0.20.0-3.el8.x86_64"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2021:1791"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "HIGH",
            "attackVector": "LOCAL",
            "availabilityImpact": "LOW",
            "baseScore": 6.4,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:L",
            "version": "3.1"
          },
          "products": [
            "AppStream-8.4.0.GA:spice-vdagent-0:0.20.0-3.el8.aarch64",
            "AppStream-8.4.0.GA:spice-vdagent-0:0.20.0-3.el8.ppc64le",
            "AppStream-8.4.0.GA:spice-vdagent-0:0.20.0-3.el8.s390x",
            "AppStream-8.4.0.GA:spice-vdagent-0:0.20.0-3.el8.src",
            "AppStream-8.4.0.GA:spice-vdagent-0:0.20.0-3.el8.x86_64",
            "AppStream-8.4.0.GA:spice-vdagent-debuginfo-0:0.20.0-3.el8.aarch64",
            "AppStream-8.4.0.GA:spice-vdagent-debuginfo-0:0.20.0-3.el8.ppc64le",
            "AppStream-8.4.0.GA:spice-vdagent-debuginfo-0:0.20.0-3.el8.s390x",
            "AppStream-8.4.0.GA:spice-vdagent-debuginfo-0:0.20.0-3.el8.x86_64",
            "AppStream-8.4.0.GA:spice-vdagent-debugsource-0:0.20.0-3.el8.aarch64",
            "AppStream-8.4.0.GA:spice-vdagent-debugsource-0:0.20.0-3.el8.ppc64le",
            "AppStream-8.4.0.GA:spice-vdagent-debugsource-0:0.20.0-3.el8.s390x",
            "AppStream-8.4.0.GA:spice-vdagent-debugsource-0:0.20.0-3.el8.x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
        }
      ],
      "title": "spice-vdagent: UNIX domain socket peer PID retrieved via SO_PEERCRED is subject to race condition"
    }
  ]
}


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