suse-su-2020:3627-1
Vulnerability from csaf_suse
Published
2020-12-04 15:59
Modified
2020-12-04 15:59
Summary
Security update for xen

Notes

Title of the patch
Security update for xen
Description of the patch
This update for xen fixes the following issues: - bsc#1178963 - VUL-0: xen: stack corruption from XSA-346 change (XSA-355)
Patchnames
SUSE-2020-3627,SUSE-SLE-Product-HPC-15-2020-3627,SUSE-SLE-Product-SLES_SAP-15-2020-3627
Terms of use
CSAF 2.0 data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).


To clipboard 

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          "text": "An issue was discovered in Xen through 4.14.x allowing x86 guest OS users to cause a denial of service (data corruption), cause a data leak, or possibly gain privileges because an AMD IOMMU page-table entry can be half-updated.",
          "title": "CVE description"
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        ]
      },
      "references": [
        {
          "category": "external",
          "summary": "CVE-2020-27670",
          "url": "https://www.suse.com/security/cve/CVE-2020-27670"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1177414 for CVE-2020-27670",
          "url": "https://bugzilla.suse.com/1177414"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1178658 for CVE-2020-27670",
          "url": "https://bugzilla.suse.com/1178658"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1183925 for CVE-2020-27670",
          "url": "https://bugzilla.suse.com/1183925"
        }
      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or \"zypper patch\".\n",
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      "scores": [
        {
          "cvss_v3": {
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H",
            "version": "3.1"
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        }
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        {
          "category": "impact",
          "date": "2020-12-04T15:59:58Z",
          "details": "important"
        }
      ],
      "title": "CVE-2020-27670"
    },
    {
      "cve": "CVE-2020-27671",
      "ids": [
        {
          "system_name": "SUSE CVE Page",
          "text": "https://www.suse.com/security/cve/CVE-2020-27671"
        }
      ],
      "notes": [
        {
          "category": "general",
          "text": "An issue was discovered in Xen through 4.14.x allowing x86 HVM and PVH guest OS users to cause a denial of service (data corruption), cause a data leak, or possibly gain privileges because coalescing of per-page IOMMU TLB flushes is mishandled.",
          "title": "CVE description"
        }
      ],
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          "category": "external",
          "summary": "CVE-2020-27671",
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        },
        {
          "category": "external",
          "summary": "SUSE Bug 1177413 for CVE-2020-27671",
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        },
        {
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          "summary": "SUSE Bug 1183925 for CVE-2020-27671",
          "url": "https://bugzilla.suse.com/1183925"
        }
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      "remediations": [
        {
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            "SUSE Linux Enterprise High Performance Computing 15-ESPOS:xen-libs-4.10.4_22-3.50.1.x86_64",
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        {
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            "baseScore": 7.8,
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            "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H",
            "version": "3.1"
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          "date": "2020-12-04T15:59:58Z",
          "details": "important"
        }
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    },
    {
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        {
          "system_name": "SUSE CVE Page",
          "text": "https://www.suse.com/security/cve/CVE-2020-27672"
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      ],
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        {
          "category": "general",
          "text": "An issue was discovered in Xen through 4.14.x allowing x86 guest OS users to cause a host OS denial of service, achieve data corruption, or possibly gain privileges by exploiting a race condition that leads to a use-after-free involving 2MiB and 1GiB superpages.",
          "title": "CVE description"
        }
      ],
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          "summary": "CVE-2020-27672",
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        },
        {
          "category": "external",
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        {
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    },
    {
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        {
          "category": "general",
          "text": "An issue was discovered in Xen through 4.14.x allowing x86 PV guest OS users to gain guest OS privileges by modifying kernel memory contents, because invalidation of TLB entries is mishandled during use of an INVLPG-like attack technique.",
          "title": "CVE description"
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        {
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      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 6.2,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
            "version": "3.1"
          },
          "products": [
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            "SUSE Linux Enterprise Server for SAP Applications 15:xen-tools-domU-4.10.4_22-3.50.1.x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "date": "2020-12-04T15:59:58Z",
          "details": "moderate"
        }
      ],
      "title": "CVE-2020-27674"
    },
    {
      "cve": "CVE-2020-28368",
      "ids": [
        {
          "system_name": "SUSE CVE Page",
          "text": "https://www.suse.com/security/cve/CVE-2020-28368"
        }
      ],
      "notes": [
        {
          "category": "general",
          "text": "Xen through 4.14.x allows guest OS administrators to obtain sensitive information (such as AES keys from outside the guest) via a side-channel attack on a power/energy monitoring interface, aka a \"Platypus\" attack. NOTE: there is only one logically independent fix: to change the access control for each such interface in Xen.",
          "title": "CVE description"
        }
      ],
      "product_status": {
        "recommended": [
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        ]
      },
      "references": [
        {
          "category": "external",
          "summary": "CVE-2020-28368",
          "url": "https://www.suse.com/security/cve/CVE-2020-28368"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1178591 for CVE-2020-28368",
          "url": "https://bugzilla.suse.com/1178591"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1178658 for CVE-2020-28368",
          "url": "https://bugzilla.suse.com/1178658"
        }
      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or \"zypper patch\".\n",
          "product_ids": [
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      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 5.6,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N",
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        }
      ],
      "threats": [
        {
          "category": "impact",
          "date": "2020-12-04T15:59:58Z",
          "details": "moderate"
        }
      ],
      "title": "CVE-2020-28368"
    }
  ]
}


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