ubuntu-cve-2020-11038
Vulnerability from osv_ubuntu
Published
2020-05-29 19:15
Modified
2026-04-22 07:39
Summary
Details

In FreeRDP less than or equal to 2.0.0, an Integer Overflow to Buffer Overflow exists. When using /video redirection, a manipulated server can instruct the client to allocate a buffer with a smaller size than requested due to an integer overflow in size calculation. With later messages, the server can manipulate the client to write data out of bound to the previously allocated buffer. This has been patched in 2.1.0.

Severity
5.4 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L
6.9 (Medium)
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:N/I:H/A:L
N/A (UNKNOWN)
medium
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 less than or equal to 2.0.0, an Integer Overflow to Buffer Overflow exists. When using /video redirection, a manipulated server can instruct the client to allocate a buffer with a smaller size than requested due to an integer overflow in size calculation. With later messages, the server can manipulate the client to write data out of bound to the previously allocated buffer. This has been patched in 2.1.0.",
  "id": "UBUNTU-CVE-2020-11038",
  "modified": "2026-04-22T07:39:22Z",
  "published": "2020-05-29T19:15:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2020-11038"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-h25x-cqr6-fp6g"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2020-11038"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:N/I:H/A:L",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2020-11038"
  ]
}



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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.