csaf_redhat - rhsa-2019

rhsa-2019_0275

Vulnerability from csaf_redhat

Published

2019-02-05 08:26

Modified

2024-11-15 00:39

Summary

Red Hat Security Advisory: rh-haproxy18-haproxy security update

Notes

Topic

An update for rh-haproxy18-haproxy is now available for Red Hat Software Collections. 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

HAProxy is a TCP/HTTP reverse proxy which is particularly suited for high availability environments. Security Fix(es): * haproxy: Mishandling of priority flag in short HEADERS frame by HTTP/2 decoder allows for crash (CVE-2018-20615) 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.

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": [
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      "cve": "CVE-2018-20615",
      "cwe": {
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        "name": "Out-of-bounds Read"
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      "discovery_date": "2019-01-02T00:00:00+00:00",
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          "text": "1663060"
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      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in HAProxy, versions before 1.8.17 and 1.9.1. Mishandling occurs when a priority flag is set on too short HEADERS frame in the HTTP/2 decoder, allowing an out-of-bounds read and a subsequent crash to occur. A remote attacker can exploit this flaw to cause a denial of service. Those who do not use HTTP/2 are unaffected.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "haproxy: Mishandling of priority flag in short HEADERS frame by HTTP/2 decoder allows for crash",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "HTTP/2 support was added to haproxy in version 1.8, therefore OpenShift Container Platform (OCP) 3.7 and earlier are unaffected by this flaw, see [1]. OCP 3.11 added a configuration option to ose-haproxy-router that made enabling HTTP/2 support easy, [2]. Prior to that, in versions OCP 3.9 and 3.10, an administrator had to customize the haproxy router configuration to add HTTP/2 support, [3]. OCP 3.9, and 3.10 are rated as moderate because HTTP/2 support was not a standard configuration option, and therefore unlikely to be enabled.\n\nVersions of haproxy included in Red Hat Enterprise Linux 6 and 7, excluding rh-haproxy18-haproxy in Red Hat Software Collections, are unaffected as they package versions of haproxy before 1.7.\n\n[1] http://www.haproxy.org/news.html\n\n[2] https://github.com/openshift/origin/pull/19968\n\n[3] https://docs.openshift.com/container-platform/3.10/install_config/router/customized_haproxy_router.html",
          "title": "Statement"
        },
        {
          "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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          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2018-20615"
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          "category": "external",
          "summary": "RHBZ#1663060",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1663060"
        },
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          "category": "external",
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          "url": "https://www.cve.org/CVERecord?id=CVE-2018-20615"
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        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2018-20615",
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        }
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      "release_date": "2019-01-08T00:00:00+00:00",
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          "category": "vendor_fix",
          "date": "2019-02-05T08:26:05+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",
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          "details": "HTTP/2 support is disabled by default on OpenShift Container Platform 3.11. To mitigate this vulnerability keep it disabled. You can verify if HTTP/2 support is enabled by following the instructions in the upstream pull request, [1].\n\n[1] https://github.com/openshift/origin/pull/19968",
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            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.0"
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      ],
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        {
          "category": "impact",
          "details": "Important"
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      ],
      "title": "haproxy: Mishandling of priority flag in short HEADERS frame by HTTP/2 decoder allows for crash"
    }
  ]
}

cve-2018-20615

Vulnerability from cvelistv5

Published

2019-03-18 16:11

Modified

2024-08-05 12:05

Severity ?

Summary

An out-of-bounds read issue was discovered in the HTTP/2 protocol decoder in HAProxy 1.8.x and 1.9.x through 1.9.0 which can result in a crash. The processing of the PRIORITY flag in a HEADERS frame requires 5 extra bytes, and while these bytes are skipped, the total frame length was not re-checked to make sure they were present in the frame.

References

▼	URL	Tags
	http://www.securityfocus.com/bid/106645	vdb-entry, x_refsource_BID
	https://access.redhat.com/errata/RHSA-2019:0275	vendor-advisory, x_refsource_REDHAT
	http://lists.opensuse.org/opensuse-security-announce/2019-02/msg00018.html	mailing-list, x_refsource_MLIST
	https://usn.ubuntu.com/3858-1/	vendor-advisory, x_refsource_UBUNTU
	https://www.mail-archive.com/haproxy%40formilux.org/msg32304.html	mailing-list, x_refsource_MLIST
	https://access.redhat.com/errata/RHBA-2019:0327	vendor-advisory, x_refsource_REDHAT

Impacted products

▼	Vendor	Product
	n/a	n/a

Show details on NVD website

JSON

To clipboard

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              "name": "[haproxy@formilux.org] 20190108 [ANNOUNCE] haproxy-1.8.17",
              "refsource": "MLIST",
              "url": "https://www.mail-archive.com/haproxy@formilux.org/msg32304.html"
            },
            {
              "name": "RHBA-2019:0327",
              "refsource": "REDHAT",
              "url": "https://access.redhat.com/errata/RHBA-2019:0327"
            }
          ]
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2018-20615",
    "datePublished": "2019-03-18T16:11:36",
    "dateReserved": "2018-12-31T00:00:00",
    "dateUpdated": "2024-08-05T12:05:17.640Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
Confirmed: The vulnerability is confirmed from an analyst perspective.
Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
Patched: This vulnerability was successfully patched by the user reporting the sighting.
Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
Not confirmed: The user expresses doubt about the veracity of the vulnerability.
Not patched: This vulnerability was not successfully patched by the user reporting the sighting.

Action not permitted