ubuntu-cve-2020-11047
Vulnerability from osv_ubuntu
Published
2020-05-07 20:15
Modified
2026-04-22 07:39
Summary
Details

In FreeRDP after 1.1 and before 2.0.0, there is an out-of-bounds read in autodetect_recv_bandwidth_measure_results. A malicious server can extract up to 8 bytes of client memory with a manipulated message by providing a short input and reading the measurement result data. This has been patched in 2.0.0.

Severity
5.9 (Medium)
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:N/A:H
5.5 (Medium)
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:L
N/A (UNKNOWN)
low
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "freerdp2-shadow-x11",
            "binary_version": "2.1.1+dfsg1-0ubuntu0.18.04.1"
          },
          {
            "binary_name": "freerdp2-wayland",
            "binary_version": "2.1.1+dfsg1-0ubuntu0.18.04.1"
          },
          {
            "binary_name": "freerdp2-x11",
            "binary_version": "2.1.1+dfsg1-0ubuntu0.18.04.1"
          },
          {
            "binary_name": "libfreerdp-client2-2",
            "binary_version": "2.1.1+dfsg1-0ubuntu0.18.04.1"
          },
          {
            "binary_name": "libfreerdp-server2-2",
            "binary_version": "2.1.1+dfsg1-0ubuntu0.18.04.1"
          },
          {
            "binary_name": "libfreerdp-shadow-subsystem2-2",
            "binary_version": "2.1.1+dfsg1-0ubuntu0.18.04.1"
          },
          {
            "binary_name": "libfreerdp-shadow2-2",
            "binary_version": "2.1.1+dfsg1-0ubuntu0.18.04.1"
          },
          {
            "binary_name": "libfreerdp2-2",
            "binary_version": "2.1.1+dfsg1-0ubuntu0.18.04.1"
          },
          {
            "binary_name": "libuwac0-0",
            "binary_version": "2.1.1+dfsg1-0ubuntu0.18.04.1"
          },
          {
            "binary_name": "libwinpr-tools2-2",
            "binary_version": "2.1.1+dfsg1-0ubuntu0.18.04.1"
          },
          {
            "binary_name": "libwinpr2-2",
            "binary_version": "2.1.1+dfsg1-0ubuntu0.18.04.1"
          },
          {
            "binary_name": "winpr-utils",
            "binary_version": "2.1.1+dfsg1-0ubuntu0.18.04.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "freerdp2",
        "purl": "pkg:deb/ubuntu/freerdp2@2.1.1+dfsg1-0ubuntu0.18.04.1?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.1.1+dfsg1-0ubuntu0.18.04.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.0.0~git20170725.1.1648deb+dfsg1-1",
        "2.0.0~git20170725.1.1648deb+dfsg1-5",
        "2.0.0~git20170725.1.1648deb+dfsg1-5ubuntu1",
        "2.0.0~git20170725.1.1648deb+dfsg1-5ubuntu2",
        "2.0.0~git20170725.1.1648deb+dfsg1-6",
        "2.0.0~git20170725.1.1648deb+dfsg1-6build1",
        "2.0.0~git20170725.1.1648deb+dfsg1-7",
        "2.0.0~git20170725.1.1648deb+dfsg1-7ubuntu0.1"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "freerdp2-shadow-x11",
            "binary_version": "2.1.1+dfsg1-0ubuntu0.20.04.1"
          },
          {
            "binary_name": "freerdp2-wayland",
            "binary_version": "2.1.1+dfsg1-0ubuntu0.20.04.1"
          },
          {
            "binary_name": "freerdp2-x11",
            "binary_version": "2.1.1+dfsg1-0ubuntu0.20.04.1"
          },
          {
            "binary_name": "libfreerdp-client2-2",
            "binary_version": "2.1.1+dfsg1-0ubuntu0.20.04.1"
          },
          {
            "binary_name": "libfreerdp-server2-2",
            "binary_version": "2.1.1+dfsg1-0ubuntu0.20.04.1"
          },
          {
            "binary_name": "libfreerdp-shadow-subsystem2-2",
            "binary_version": "2.1.1+dfsg1-0ubuntu0.20.04.1"
          },
          {
            "binary_name": "libfreerdp-shadow2-2",
            "binary_version": "2.1.1+dfsg1-0ubuntu0.20.04.1"
          },
          {
            "binary_name": "libfreerdp2-2",
            "binary_version": "2.1.1+dfsg1-0ubuntu0.20.04.1"
          },
          {
            "binary_name": "libuwac0-0",
            "binary_version": "2.1.1+dfsg1-0ubuntu0.20.04.1"
          },
          {
            "binary_name": "libwinpr-tools2-2",
            "binary_version": "2.1.1+dfsg1-0ubuntu0.20.04.1"
          },
          {
            "binary_name": "libwinpr2-2",
            "binary_version": "2.1.1+dfsg1-0ubuntu0.20.04.1"
          },
          {
            "binary_name": "winpr-utils",
            "binary_version": "2.1.1+dfsg1-0ubuntu0.20.04.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "freerdp2",
        "purl": "pkg:deb/ubuntu/freerdp2@2.1.1+dfsg1-0ubuntu0.20.04.1?arch=source\u0026distro=focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.1.1+dfsg1-0ubuntu0.20.04.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.0.0~git20190204.1.2693389a+dfsg1-1",
        "2.0.0~git20190204.1.2693389a+dfsg1-2",
        "2.0.0~git20190204.1.2693389a+dfsg1-2build1",
        "2.0.0~git20190204.1.2693389a+dfsg1-2build2"
      ]
    }
  ],
  "aliases": [],
  "details": "In FreeRDP after 1.1 and before 2.0.0, there is an out-of-bounds read in autodetect_recv_bandwidth_measure_results. A malicious server can extract up to 8 bytes of client memory with a manipulated message by providing a short input and reading the measurement result data. This has been patched in 2.0.0.",
  "id": "UBUNTU-CVE-2020-11047",
  "modified": "2026-04-22T07:39:22Z",
  "published": "2020-05-07T20:15:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2020-11047"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-9fw6-m2q8-h5pw"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-4379-1"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2020-11047"
    }
  ],
  "related": [
    "USN-4379-1"
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:L",
      "type": "CVSS_V3"
    },
    {
      "score": "low",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2020-11047"
  ]
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

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.