Vulnerability-Lookup

CNVD-2021-26416

Vulnerability from cnvd - Published: 2021-04-09

Title

Valve Source权限提升漏洞

Description

Valve Source是美国Valve公司的一款3D游戏引擎。 Valve Source中存在安全漏洞。该漏洞源于未能正确的程序对高级本地过程的调用。本地攻击者可通过向/tmp/hl2_relaunch写入文件利用该漏洞获取权限。

Severity

高

Patch Name

Valve Source权限提升漏洞的补丁

Patch Description

Valve Source是美国Valve公司的一款3D游戏引擎。 Valve Source中存在安全漏洞。该漏洞源于未能正确的程序对高级本地过程的调用。本地攻击者可通过向/tmp/hl2_relaunch写入文件利用该漏洞获取权限。目前，供应商发布了安全公告及相关补丁信息，修复了此漏洞。

Formal description

厂商尚未提供漏洞修复方案，请关注厂商主页更新： https://www.valvesoftware.com/

Reference

https://nvd.nist.gov/vuln/detail/CVE-2020-12242

Impacted products

Name
Valve Source

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2020-12242"
    }
  },
  "description": "Valve Source\u662f\u7f8e\u56fdValve\u516c\u53f8\u7684\u4e00\u6b3e3D\u6e38\u620f\u5f15\u64ce\u3002\n\nValve Source\u4e2d\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\u3002\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u672a\u80fd\u6b63\u786e\u7684\u7a0b\u5e8f\u5bf9\u9ad8\u7ea7\u672c\u5730\u8fc7\u7a0b\u7684\u8c03\u7528\u3002\u672c\u5730\u653b\u51fb\u8005\u53ef\u901a\u8fc7\u5411/tmp/hl2_relaunch\u5199\u5165\u6587\u4ef6\u5229\u7528\u8be5\u6f0f\u6d1e\u83b7\u53d6\u6743\u9650\u3002",
  "formalWay": "\u5382\u5546\u5c1a\u672a\u63d0\u4f9b\u6f0f\u6d1e\u4fee\u590d\u65b9\u6848\uff0c\u8bf7\u5173\u6ce8\u5382\u5546\u4e3b\u9875\u66f4\u65b0\uff1a\r\nhttps://www.valvesoftware.com/",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2021-26416",
  "openTime": "2021-04-09",
  "patchDescription": "Valve Source\u662f\u7f8e\u56fdValve\u516c\u53f8\u7684\u4e00\u6b3e3D\u6e38\u620f\u5f15\u64ce\u3002\r\n\r\nValve Source\u4e2d\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\u3002\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u672a\u80fd\u6b63\u786e\u7684\u7a0b\u5e8f\u5bf9\u9ad8\u7ea7\u672c\u5730\u8fc7\u7a0b\u7684\u8c03\u7528\u3002\u672c\u5730\u653b\u51fb\u8005\u53ef\u901a\u8fc7\u5411/tmp/hl2_relaunch\u5199\u5165\u6587\u4ef6\u5229\u7528\u8be5\u6f0f\u6d1e\u83b7\u53d6\u6743\u9650\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": "Valve Source\u6743\u9650\u63d0\u5347\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "Valve Source"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2020-12242",
  "serverity": "\u9ad8",
  "submitTime": "2020-04-28",
  "title": "Valve Source\u6743\u9650\u63d0\u5347\u6f0f\u6d1e"
}

CVE-2020-12242 (GCVE-0-2020-12242)

Vulnerability from cvelistv5 – Published: 2020-04-27 14:56 – Updated: 2024-08-04 11:48

Summary

Valve Source allows local users to gain privileges by writing to the /tmp/hl2_relaunch file, which is later executed in the context of a different user account.

Severity

No CVSS data available.

CWE

Assigner

mitre mitre root

References

1 reference

URL	Tags
https://0xem.ma/cve/2020/04/28/Source-hl2-relaunc…	x_refsource_MISC

Show details on NVD website

JSON

To clipboard

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      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T11:48:58.304Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://0xem.ma/cve/2020/04/28/Source-hl2-relaunch-exec.html"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
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      "descriptions": [
        {
          "lang": "en",
          "value": "Valve Source allows local users to gain privileges by writing to the /tmp/hl2_relaunch file, which is later executed in the context of a different user account."
        }
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            {
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      ],
      "providerMetadata": {
        "dateUpdated": "2020-04-27T14:56:12.000Z",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
      "references": [
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://0xem.ma/cve/2020/04/28/Source-hl2-relaunch-exec.html"
        }
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "cve@mitre.org",
          "ID": "CVE-2020-12242",
          "STATE": "PUBLIC"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
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                      "product_name": "n/a",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "n/a"
                          }
                        ]
                      }
                    }
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                "vendor_name": "n/a"
              }
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        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
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            }
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                  "value": "n/a"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://0xem.ma/cve/2020/04/28/Source-hl2-relaunch-exec.html",
              "refsource": "MISC",
              "url": "https://0xem.ma/cve/2020/04/28/Source-hl2-relaunch-exec.html"
            }
          ]
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2020-12242",
    "datePublished": "2020-04-27T14:56:12.000Z",
    "dateReserved": "2020-04-24T00:00:00.000Z",
    "dateUpdated": "2024-08-04T11:48:58.304Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
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}

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.