Missing offset validation leading to Out-of-Bounds Read in FreeRDP

{
  "id": "df26a38831fcbd0a9dedb5449007d2a796cf859bdcf5d93304464f715fe9dea2",
  "url": "https://osv.dev/vulnerability/CVE-2023-39356",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Missing offset validation leading to Out-of-Bounds Read in FreeRDP",
    "summary": "FreeRDP is a free implementation of the Remote Desktop Protocol (RDP), released under the Apache license. In affected versions a missing offset validation may lead to an Out Of Bound Read in the function `gdi_multi_opaque_rect`. In particular there is no code to validate if the value `multi_opaque_rect->numRectangles` is less than 45. Looping through `multi_opaque_rect->`numRectangles without proper boundary checks can lead to Out-of-Bounds Read errors which will likely lead to a crash. This issue has been addressed in versions 2.11.0 and 3.0.0-beta3. Users are advised to upgrade. There are no known workarounds for this vulnerability.",
    "evidence": "osv:CVE-2023-39356",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2023-39356",
      "aliases": [
        "CVE-2023-39356",
        "GHSA-q5v5-qhj5-mh6m"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/freerdp/freerdp",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "1384b3c33b9bd7599633cc54bf20cf20ec6be83c"
                },
                {
                  "introduced": "f468a06d88c55b9ed484757326a9528cf27d33f4"
                },
                {
                  "last_affected": "d3e428c51fab65cb87901835d4d671d1d02d16d9"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:freerdp:freerdp:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "2.11.0"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:freerdp:freerdp:3.0.0:beta1:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "3.0.0-beta1"
                      },
                      {
                        "last_affected": "3.0.0-beta1"
                      }
                    ],
                    "source": "CPE_STRING"
                  },
                  {
                    "cpe": "cpe:2.3:a:freerdp:freerdp:3.0.0:beta2:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "3.0.0-beta2"
                      },
                      {
                        "last_affected": "3.0.0-beta2"
                      }
                    ],
                    "source": "CPE_STRING"
                  }
                ]
              }
            }
          ],
          "versions": [
            "3.0.0-beta1",
            "3.0.0-beta2",
            "2.10.0",
            "2.9.0",
            "2.8.1",
            "2.8.0",
            "2.7.0",
            "2.6.1",
            "2.6.0",
            "2.5.0",
            "2.4.1",
            "2.3.2",
            "2.3.1",
            "2.3.0",
            "2.2.0",
            "2.1.2",
            "2.1.1",
            "2.1.0",
            "2.0.0",
            "2.0.0-rc4",
            "2.0.0-rc3",
            "2.0.0-rc2",
            "2.0.0-rc1",
            "2.0.0-rc0",
            "2.0.0-beta1+android11",
            "2.0.0-beta1+android10",
            "1.2.0-beta1+android9",
            "1.2.0-beta1+android7",
            "1.1.0-beta+2013071101",
            "1.1.0-beta1+ios4",
            "1.1.0-beta1+android5",
            "1.1.0-beta1+android4",
            "1.1.0-beta1+ios3",
            "1.1.0-beta1+ios2",
            "1.1.0-beta1+android3",
            "1.1.0-beta1+android2",
            "1.1.0-beta1+ios1",
            "1.1.0-beta1",
            "1.0.1",
            "1.0.0",
            "1.0-beta5",
            "1.0-beta4",
            "1.0-beta2",
            "1.0-beta1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-39356.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:34.975493195Z",
      "provider": "osv",
      "references": [
        "https://github.com/FreeRDP/FreeRDP/blob/63a2f65618748c12f79ff7450d46c6e194f2db76/include/freerdp/primary.h#L186-L196",
        "https://github.com/FreeRDP/FreeRDP/blob/63a2f65618748c12f79ff7450d46c6e194f2db76/libfreerdp/core/orders.c#L1503-L1504",
        "https://github.com/FreeRDP/FreeRDP/blob/63a2f65618748c12f79ff7450d46c6e194f2db76/libfreerdp/gdi/gdi.c#L723C1-L758",
        "https://lists.debian.org/debian-lts-announce/2023/10/msg00008.html",
        "https://lists.debian.org/debian-lts-announce/2025/02/msg00016.html",
        "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/A6LLDAPEXRDJOM3PREDDD267SSNT77DP/",
        "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/IHMTGKCZXJPQOR5ZD2I4GPDNP2DKRXMF/",
        "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/OH2ATH2BKDNKCJAU4WPPXK4SHLE3UJUV/",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/39xxx/CVE-2023-39356.json",
        "https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-q5v5-qhj5-mh6m",
        "https://nvd.nist.gov/vuln/detail/CVE-2023-39356",
        "https://security.gentoo.org/glsa/202401-16"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-125"
        ],
        "cna_assigner": "GitHub_M",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/39xxx/CVE-2023-39356.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2023-39356",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 502235,
  "published_at": "2023-08-31T20:50:19.941+00:00"
}