Vulnerability-Lookup

CNVD-2021-103653

Vulnerability from cnvd - Published: 2021-12-31

Title

FreeRDP缓冲区溢出漏洞（CNVD-2021-103653）

Description

FreeRDP是Freerdp团队的一款开源的远程桌面协议（RDP）的实现。 FreeRDP在2.4.1之前版本存在缓冲区错误漏洞，该漏洞源于网络系统或产品在内存上执行操作时，未正确验证数据边界，导致向关联的其他内存位置上执行了错误的读写操作。攻击者可利用该漏洞通过恶意服务器可能会在连接的客户端中触发越界写入导致远程代码执行。

Severity

中

Patch Name

FreeRDP缓冲区溢出漏洞（CNVD-2021-103653）的补丁

Patch Description

Formal description

厂商已发布了漏洞修复程序，请及时关注更新： https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-7c9r-6r2q-93qg

Reference

https://nvd.nist.gov/vuln/detail/CVE-2021-41160

Impacted products

Name
FreeRDP FreeRDP <2.4.1

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2021-41160",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2021-41160"
    }
  },
  "description": "FreeRDP\u662fFreerdp\u56e2\u961f\u7684\u4e00\u6b3e\u5f00\u6e90\u7684\u8fdc\u7a0b\u684c\u9762\u534f\u8bae\uff08RDP\uff09\u7684\u5b9e\u73b0\u3002\n\nFreeRDP\u57282.4.1\u4e4b\u524d\u7248\u672c\u5b58\u5728\u7f13\u51b2\u533a\u9519\u8bef\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u7f51\u7edc\u7cfb\u7edf\u6216\u4ea7\u54c1\u5728\u5185\u5b58\u4e0a\u6267\u884c\u64cd\u4f5c\u65f6\uff0c\u672a\u6b63\u786e\u9a8c\u8bc1\u6570\u636e\u8fb9\u754c\uff0c\u5bfc\u81f4\u5411\u5173\u8054\u7684\u5176\u4ed6\u5185\u5b58\u4f4d\u7f6e\u4e0a\u6267\u884c\u4e86\u9519\u8bef\u7684\u8bfb\u5199\u64cd\u4f5c\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u901a\u8fc7\u6076\u610f\u670d\u52a1\u5668\u53ef\u80fd\u4f1a\u5728\u8fde\u63a5\u7684\u5ba2\u6237\u7aef\u4e2d\u89e6\u53d1\u8d8a\u754c\u5199\u5165\u5bfc\u81f4\u8fdc\u7a0b\u4ee3\u7801\u6267\u884c\u3002",
  "formalWay": "\u5382\u5546\u5df2\u53d1\u5e03\u4e86\u6f0f\u6d1e\u4fee\u590d\u7a0b\u5e8f\uff0c\u8bf7\u53ca\u65f6\u5173\u6ce8\u66f4\u65b0\uff1a\r\nhttps://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-7c9r-6r2q-93qg",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2021-103653",
  "openTime": "2021-12-31",
  "patchDescription": "FreeRDP\u662fFreerdp\u56e2\u961f\u7684\u4e00\u6b3e\u5f00\u6e90\u7684\u8fdc\u7a0b\u684c\u9762\u534f\u8bae\uff08RDP\uff09\u7684\u5b9e\u73b0\u3002\r\n\r\nFreeRDP\u57282.4.1\u4e4b\u524d\u7248\u672c\u5b58\u5728\u7f13\u51b2\u533a\u9519\u8bef\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u7f51\u7edc\u7cfb\u7edf\u6216\u4ea7\u54c1\u5728\u5185\u5b58\u4e0a\u6267\u884c\u64cd\u4f5c\u65f6\uff0c\u672a\u6b63\u786e\u9a8c\u8bc1\u6570\u636e\u8fb9\u754c\uff0c\u5bfc\u81f4\u5411\u5173\u8054\u7684\u5176\u4ed6\u5185\u5b58\u4f4d\u7f6e\u4e0a\u6267\u884c\u4e86\u9519\u8bef\u7684\u8bfb\u5199\u64cd\u4f5c\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u901a\u8fc7\u6076\u610f\u670d\u52a1\u5668\u53ef\u80fd\u4f1a\u5728\u8fde\u63a5\u7684\u5ba2\u6237\u7aef\u4e2d\u89e6\u53d1\u8d8a\u754c\u5199\u5165\u5bfc\u81f4\u8fdc\u7a0b\u4ee3\u7801\u6267\u884c\u3002\u76ee\u524d\uff0c\u4f9b\u5e94\u5546\u53d1\u5e03\u4e86\u5b89\u5168\u516c\u544a\u53ca\u76f8\u5173\u8865\u4e01\u4fe1\u606f\uff0c\u4fee\u590d\u4e86\u6b64\u6f0f\u6d1e\u3002",
  "patchName": "FreeRDP\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\uff08CNVD-2021-103653\uff09\u7684\u8865\u4e01",
  "products": {
    "product": "FreeRDP FreeRDP \u003c2.4.1"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2021-41160",
  "serverity": "\u4e2d",
  "submitTime": "2021-10-24",
  "title": "FreeRDP\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\uff08CNVD-2021-103653\uff09"
}

CVE-2021-41160 (GCVE-0-2021-41160)

Vulnerability from cvelistv5 – Published: 2021-10-21 00:00 – Updated: 2025-11-03 20:33

Title

Improper region checks in FreeRDP allow out of bound write to memory

Summary

FreeRDP is a free implementation of the Remote Desktop Protocol (RDP), released under the Apache license. In affected versions a malicious server might trigger out of bound writes in a connected client. Connections using GDI or SurfaceCommands to send graphics updates to the client might send `0` width/height or out of bound rectangles to trigger out of bound writes. With `0` width or heigth the memory allocation will be `0` but the missing bounds checks allow writing to the pointer at this (not allocated) region. This issue has been patched in FreeRDP 2.4.1.

Severity

5.3 (Medium)


                        
                          CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:N/I:H/A:N

CWE

CWE-787 - Out-of-bounds Write

Assigner

GitHub_M mitre root

References

7 references

URL	Tags
https://github.com/FreeRDP/FreeRDP/security/advis…
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisory
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisory
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisory
https://security.gentoo.org/glsa/202210-24	vendor-advisory
https://lists.debian.org/debian-lts-announce/2023…	mailing-list
https://lists.debian.org/debian-lts-announce/2025…

Impacted products

1 product

Vendor	Product	Version
FreeRDP	FreeRDP	Affected: < 2.4.1

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2025-11-03T20:33:53.998Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-7c9r-6r2q-93qg"
          },
          {
            "name": "FEDORA-2021-2c25f03d0b",
            "tags": [
              "vendor-advisory",
              "x_transferred"
            ],
            "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DWJXQOWKNR7O5HM2HFJOM4GBUFPTE3RG/"
          },
          {
            "name": "FEDORA-2021-5d227916bc",
            "tags": [
              "vendor-advisory",
              "x_transferred"
            ],
            "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZXCR73EDVPLI6TRWRAWJCJ7OBYDKBB74/"
          },
          {
            "name": "FEDORA-2021-ac23d9e47f",
            "tags": [
              "vendor-advisory",
              "x_transferred"
            ],
            "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WIZUPVRGCWUDAPDOQVUGUIYUO7UWKMXX/"
          },
          {
            "name": "GLSA-202210-24",
            "tags": [
              "vendor-advisory",
              "x_transferred"
            ],
            "url": "https://security.gentoo.org/glsa/202210-24"
          },
          {
            "name": "[debian-lts-announce] 20231117 [SECURITY] [DLA 3654-1] freerdp2 security update",
            "tags": [
              "mailing-list",
              "x_transferred"
            ],
            "url": "https://lists.debian.org/debian-lts-announce/2023/11/msg00010.html"
          },
          {
            "url": "https://lists.debian.org/debian-lts-announce/2025/02/msg00016.html"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "FreeRDP",
          "vendor": "FreeRDP",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 2.4.1"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "FreeRDP is a free implementation of the Remote Desktop Protocol (RDP), released under the Apache license. In affected versions a malicious server might trigger out of bound writes in a connected client. Connections using GDI or SurfaceCommands to send graphics updates to the client might send `0` width/height or out of bound rectangles to trigger out of bound writes. With `0` width or heigth the memory allocation will be `0` but the missing bounds checks allow writing to the pointer at this (not allocated) region. This issue has been patched in FreeRDP 2.4.1."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "LOCAL",
            "availabilityImpact": "NONE",
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "HIGH",
            "privilegesRequired": "HIGH",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:N/I:H/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-787",
              "description": "CWE-787: Out-of-bounds Write",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2023-11-17T19:06:22.518Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "url": "https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-7c9r-6r2q-93qg"
        },
        {
          "name": "FEDORA-2021-2c25f03d0b",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DWJXQOWKNR7O5HM2HFJOM4GBUFPTE3RG/"
        },
        {
          "name": "FEDORA-2021-5d227916bc",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZXCR73EDVPLI6TRWRAWJCJ7OBYDKBB74/"
        },
        {
          "name": "FEDORA-2021-ac23d9e47f",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WIZUPVRGCWUDAPDOQVUGUIYUO7UWKMXX/"
        },
        {
          "name": "GLSA-202210-24",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://security.gentoo.org/glsa/202210-24"
        },
        {
          "name": "[debian-lts-announce] 20231117 [SECURITY] [DLA 3654-1] freerdp2 security update",
          "tags": [
            "mailing-list"
          ],
          "url": "https://lists.debian.org/debian-lts-announce/2023/11/msg00010.html"
        }
      ],
      "source": {
        "advisory": "GHSA-7c9r-6r2q-93qg",
        "discovery": "UNKNOWN"
      },
      "title": "Improper region checks in FreeRDP allow out of bound write to memory"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2021-41160",
    "datePublished": "2021-10-21T00:00:00.000Z",
    "dateReserved": "2021-09-15T00:00:00.000Z",
    "dateUpdated": "2025-11-03T20:33:53.998Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.