ubuntu-cve-2020-11100
Vulnerability from osv_ubuntu
Published
2020-04-02 00:00
Modified
2025-09-08 16:46
Summary
Details

In hpack_dht_insert in hpack-tbl.c in the HPACK decoder in HAProxy 1.8 through 2.x before 2.1.4, a remote attacker can write arbitrary bytes around a certain location on the heap via a crafted HTTP/2 request, possibly causing remote code execution.

Severity
8.8 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
N/A (UNKNOWN)
medium
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "haproxy",
            "binary_version": "1.8.8-1ubuntu0.10"
          },
          {
            "binary_name": "vim-haproxy",
            "binary_version": "1.8.8-1ubuntu0.10"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "haproxy",
        "purl": "pkg:deb/ubuntu/haproxy@1.8.8-1ubuntu0.10?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.8.8-1ubuntu0.10"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.7.9-1ubuntu1",
        "1.7.9-1ubuntu2",
        "1.8.4-1",
        "1.8.7-1",
        "1.8.8-1",
        "1.8.8-1ubuntu0.1",
        "1.8.8-1ubuntu0.2",
        "1.8.8-1ubuntu0.3",
        "1.8.8-1ubuntu0.4",
        "1.8.8-1ubuntu0.6",
        "1.8.8-1ubuntu0.7",
        "1.8.8-1ubuntu0.8",
        "1.8.8-1ubuntu0.9"
      ]
    }
  ],
  "aliases": [],
  "details": "In hpack_dht_insert in hpack-tbl.c in the HPACK decoder in HAProxy 1.8 through 2.x before 2.1.4, a remote attacker can write arbitrary bytes around a certain location on the heap via a crafted HTTP/2 request, possibly causing remote code execution.",
  "id": "UBUNTU-CVE-2020-11100",
  "modified": "2025-09-08T16:46:04Z",
  "published": "2020-04-02T00:00:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2020-11100"
    },
    {
      "type": "REPORT",
      "url": "https://www.mail-archive.com/haproxy@formilux.org/msg36877.html"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-4321-1"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2020-11100"
    }
  ],
  "related": [
    "USN-4321-1"
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2020-11100"
  ]
}



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Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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  • 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.