RHSA-2019_3179

Vulnerability from csaf_redhat - Published: 2019-10-23 08:43 - Updated: 2024-11-15 04:11
Summary
Red Hat Security Advisory: qemu-kvm-rhev security and bug fix update
Severity
Important
Notes
Topic: An update for qemu-kvm-rhev is now available for Red Hat Virtualization 4 for Red Hat Enterprise Linux 7 and Red Hat Virtualization Engine 4.3. Red Hat Product Security has rated this update as having a security impact of Important. 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: KVM (Kernel-based Virtual Machine) is a full virtualization solution for Linux on a variety of architectures. The qemu-kvm-rhev packages provide the user-space component for running virtual machines that use KVM in environments managed by Red Hat products. Security Fix(es): * QEMU: slirp: heap buffer overflow during packet reassembly (CVE-2019-14378) * QEMU: qxl: null pointer dereference while releasing spice resources (CVE-2019-12155) 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. Bug Fix(es): * ccid: Fix incorrect dwProtocol advertisement of T=0 (BZ#1729880) * QEMU gets stuck on resume/cont call from libvirt (BZ#1741937) * [v2v] Migration performance regression (BZ#1743322) * qemu, qemu-img fail to detect alignment with XFS and Gluster/XFS on 4k block device (BZ#1745443) * qemu-kvm: backport cpuidle-haltpoll support (BZ#1746282) * qemu aborts in blockCommit: qemu-kvm: block.c:3486 (BZ#1750322)
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.
CVE-2019-12155

interface_release_resource in hw/display/qxl.c in QEMU 3.1.x through 4.0.0 has a NULL pointer dereference.

3.8 (Low)
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:L
CWE-476 - NULL Pointer Dereference
Vendor Fix For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/2974891 After installing this update, shut down all running virtual machines. Once all virtual machines have shut down, start them again for this update to take effect. https://access.redhat.com/errata/RHSA-2019:3179
CVE-2019-14378

A heap buffer overflow issue was found in the SLiRP networking implementation of the QEMU emulator. This flaw occurs in the ip_reass() routine while reassembling incoming packets if the first fragment is bigger than the m->m_dat[] buffer. An attacker could use this flaw to crash the QEMU process on the host, resulting in a Denial of Service or potentially executing arbitrary code with privileges of the QEMU process.

7.0 (High)
CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:H
CWE-122 - Heap-based Buffer Overflow
Vendor Fix For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/2974891 After installing this update, shut down all running virtual machines. Once all virtual machines have shut down, start them again for this update to take effect. https://access.redhat.com/errata/RHSA-2019:3179
Workaround There is no external mitigation to prevent this out-of-bounds heap memory access.
References
Acknowledgments
Ruhr University Bochum Cornelius Aschermann Sergej Schumilo Simon Wrner
Vishnu Dev
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          "names": [
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          "organization": "Ruhr University Bochum"
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          "category": "description",
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          "title": "Vulnerability description"
        },
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          "title": "Vulnerability summary"
        },
        {
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          "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.",
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          "title": "Vulnerability description"
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          "text": "QEMU: slirp: heap buffer overflow during packet reassembly",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "Red Hat OpenStack Platform:                                                                                                                 \n* This flaw impacts KVM user-mode or SLIRP networking, which is not used in Red Hat OpenStack Platform. Although updating is recommended for affected versions (see below), Red Hat OpenStack Platform environments are not vulnerable.\n* Because the flaw\u0027s impact is Low, it will not be fixed in Red Hat OpenStack Platform 9 which is retiring within a few weeks of the flaw\u0027s public date.",
          "title": "Statement"
        },
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            "7Server-RHEV-4-Agents-7:qemu-kvm-rhev-10:2.12.0-33.el7_7.4.x86_64",
            "7Server-RHEV-4-Agents-7:qemu-kvm-rhev-debuginfo-10:2.12.0-33.el7_7.4.ppc64le",
            "7Server-RHEV-4-Agents-7:qemu-kvm-rhev-debuginfo-10:2.12.0-33.el7_7.4.x86_64",
            "7Server-RHEV-4-Agents-7:qemu-kvm-tools-rhev-10:2.12.0-33.el7_7.4.ppc64le",
            "7Server-RHEV-4-Agents-7:qemu-kvm-tools-rhev-10:2.12.0-33.el7_7.4.x86_64",
            "7Server-RHV-S-4.3:qemu-img-rhev-10:2.12.0-33.el7_7.4.x86_64",
            "7Server-RHV-S-4.3:qemu-kvm-common-rhev-10:2.12.0-33.el7_7.4.x86_64",
            "7Server-RHV-S-4.3:qemu-kvm-rhev-10:2.12.0-33.el7_7.4.src",
            "7Server-RHV-S-4.3:qemu-kvm-rhev-10:2.12.0-33.el7_7.4.x86_64",
            "7Server-RHV-S-4.3:qemu-kvm-rhev-debuginfo-10:2.12.0-33.el7_7.4.x86_64",
            "7Server-RHV-S-4.3:qemu-kvm-tools-rhev-10:2.12.0-33.el7_7.4.x86_64"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "HIGH",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 7.0,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "LOW",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:H",
            "version": "3.0"
          },
          "products": [
            "7Server-RHEV-4-Agents-7:qemu-img-rhev-10:2.12.0-33.el7_7.4.ppc64le",
            "7Server-RHEV-4-Agents-7:qemu-img-rhev-10:2.12.0-33.el7_7.4.x86_64",
            "7Server-RHEV-4-Agents-7:qemu-kvm-common-rhev-10:2.12.0-33.el7_7.4.ppc64le",
            "7Server-RHEV-4-Agents-7:qemu-kvm-common-rhev-10:2.12.0-33.el7_7.4.x86_64",
            "7Server-RHEV-4-Agents-7:qemu-kvm-rhev-10:2.12.0-33.el7_7.4.ppc64le",
            "7Server-RHEV-4-Agents-7:qemu-kvm-rhev-10:2.12.0-33.el7_7.4.src",
            "7Server-RHEV-4-Agents-7:qemu-kvm-rhev-10:2.12.0-33.el7_7.4.x86_64",
            "7Server-RHEV-4-Agents-7:qemu-kvm-rhev-debuginfo-10:2.12.0-33.el7_7.4.ppc64le",
            "7Server-RHEV-4-Agents-7:qemu-kvm-rhev-debuginfo-10:2.12.0-33.el7_7.4.x86_64",
            "7Server-RHEV-4-Agents-7:qemu-kvm-tools-rhev-10:2.12.0-33.el7_7.4.ppc64le",
            "7Server-RHEV-4-Agents-7:qemu-kvm-tools-rhev-10:2.12.0-33.el7_7.4.x86_64",
            "7Server-RHV-S-4.3:qemu-img-rhev-10:2.12.0-33.el7_7.4.x86_64",
            "7Server-RHV-S-4.3:qemu-kvm-common-rhev-10:2.12.0-33.el7_7.4.x86_64",
            "7Server-RHV-S-4.3:qemu-kvm-rhev-10:2.12.0-33.el7_7.4.src",
            "7Server-RHV-S-4.3:qemu-kvm-rhev-10:2.12.0-33.el7_7.4.x86_64",
            "7Server-RHV-S-4.3:qemu-kvm-rhev-debuginfo-10:2.12.0-33.el7_7.4.x86_64",
            "7Server-RHV-S-4.3:qemu-kvm-tools-rhev-10:2.12.0-33.el7_7.4.x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "QEMU: slirp: heap buffer overflow during packet reassembly"
    }
  ]
}


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Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.