Vulnerability-Lookup

CNVD-2020-68860

Vulnerability from cnvd - Published: 2020-12-04

Title

FreeBSD拒绝服务漏洞（CNVD-2020-68860）

Description

FreeBSD是Freebsd基金会的一套类Unix操作系统。pts是使用在其中的一个伪终端驱动程序。 FreeBSD存在拒绝服务漏洞，攻击者利用该漏洞可以通过FreeBSD的ICMPv6强制使用释放的内存区域，以触发拒绝服务并可能运行代码。

Severity

高

Patch Name

FreeBSD拒绝服务漏洞（CNVD-2020-68860）的补丁

Patch Description

FreeBSD是Freebsd基金会的一套类Unix操作系统。pts是使用在其中的一个伪终端驱动程序。 FreeBSD存在拒绝服务漏洞，攻击者利用该漏洞可以通过FreeBSD的ICMPv6强制使用释放的内存区域，以触发拒绝服务并可能运行代码。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

厂商已发布了漏洞修复程序，请及时关注更新： https://www.freebsd.org/security/advisories/FreeBSD-SA-20:32.rtsold.asc

Reference

https://vigilance.fr/vulnerability/FreeBSD-use-after-free-via-ICMPv6-34022

Impacted products

Name
FreeBSD FreeBSD

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2020-7469",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2020-7469"
    }
  },
  "description": "FreeBSD\u662fFreebsd\u57fa\u91d1\u4f1a\u7684\u4e00\u5957\u7c7bUnix\u64cd\u4f5c\u7cfb\u7edf\u3002pts\u662f\u4f7f\u7528\u5728\u5176\u4e2d\u7684\u4e00\u4e2a\u4f2a\u7ec8\u7aef\u9a71\u52a8\u7a0b\u5e8f\u3002\n\nFreeBSD\u5b58\u5728\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff0c\u653b\u51fb\u8005\u5229\u7528\u8be5\u6f0f\u6d1e\u53ef\u4ee5\u901a\u8fc7FreeBSD\u7684ICMPv6\u5f3a\u5236\u4f7f\u7528\u91ca\u653e\u7684\u5185\u5b58\u533a\u57df\uff0c\u4ee5\u89e6\u53d1\u62d2\u7edd\u670d\u52a1\u5e76\u53ef\u80fd\u8fd0\u884c\u4ee3\u7801\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://www.freebsd.org/security/advisories/FreeBSD-SA-20:32.rtsold.asc",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2020-68860",
  "openTime": "2020-12-04",
  "patchDescription": "FreeBSD\u662fFreebsd\u57fa\u91d1\u4f1a\u7684\u4e00\u5957\u7c7bUnix\u64cd\u4f5c\u7cfb\u7edf\u3002pts\u662f\u4f7f\u7528\u5728\u5176\u4e2d\u7684\u4e00\u4e2a\u4f2a\u7ec8\u7aef\u9a71\u52a8\u7a0b\u5e8f\u3002\r\n\r\nFreeBSD\u5b58\u5728\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff0c\u653b\u51fb\u8005\u5229\u7528\u8be5\u6f0f\u6d1e\u53ef\u4ee5\u901a\u8fc7FreeBSD\u7684ICMPv6\u5f3a\u5236\u4f7f\u7528\u91ca\u653e\u7684\u5185\u5b58\u533a\u57df\uff0c\u4ee5\u89e6\u53d1\u62d2\u7edd\u670d\u52a1\u5e76\u53ef\u80fd\u8fd0\u884c\u4ee3\u7801\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": "FreeBSD\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff08CNVD-2020-68860\uff09\u7684\u8865\u4e01",
  "products": {
    "product": "FreeBSD FreeBSD"
  },
  "referenceLink": "https://vigilance.fr/vulnerability/FreeBSD-use-after-free-via-ICMPv6-34022",
  "serverity": "\u9ad8",
  "submitTime": "2020-12-03",
  "title": "FreeBSD\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff08CNVD-2020-68860\uff09"
}

CVE-2020-7469 (GCVE-0-2020-7469)

Vulnerability from cvelistv5 – Published: 2021-06-04 11:55 – Updated: 2024-08-04 09:33

Summary

In FreeBSD 12.2-STABLE before r367402, 11.4-STABLE before r368202, 12.2-RELEASE before p1, 12.1-RELEASE before p11 and 11.4-RELEASE before p5 the handler for a routing option caches a pointer into the packet buffer holding the ICMPv6 message. However, when processing subsequent options the packet buffer may be freed, rendering the cached pointer invalid. The network stack may later dereference the pointer, potentially triggering a use-after-free.

Severity

No CVSS data available.

CWE

Use after free

Assigner

freebsd mitre root

References

2 references

URL	Tags
https://security.FreeBSD.org/advisories/FreeBSD-S…	x_refsource_MISC
https://security.netapp.com/advisory/ntap-2021072…	x_refsource_CONFIRM

Impacted products

1 product

Vendor	Product	Version
n/a	FreeBSD	Affected: FreeBSD 12.2-RELEASE before p1, 12.1-RELEASE before p11, 11.4-RELEASE before p5

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T09:33:19.700Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://security.FreeBSD.org/advisories/FreeBSD-SA-20:31.icmp6.asc"
          },
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://security.netapp.com/advisory/ntap-20210720-0001/"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "FreeBSD",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "FreeBSD 12.2-RELEASE before p1, 12.1-RELEASE before p11, 11.4-RELEASE before p5"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In FreeBSD 12.2-STABLE before r367402, 11.4-STABLE before r368202, 12.2-RELEASE before p1, 12.1-RELEASE before p11 and 11.4-RELEASE before p5 the handler for a routing option caches a pointer into the packet buffer holding the ICMPv6 message. However, when processing subsequent options the packet buffer may be freed, rendering the cached pointer invalid. The network stack may later dereference the pointer, potentially triggering a use-after-free."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "Use after free",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2021-07-20T10:06:38.000Z",
        "orgId": "63664ac6-956c-4cba-a5d0-f46076e16109",
        "shortName": "freebsd"
      },
      "references": [
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://security.FreeBSD.org/advisories/FreeBSD-SA-20:31.icmp6.asc"
        },
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://security.netapp.com/advisory/ntap-20210720-0001/"
        }
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "secteam@freebsd.org",
          "ID": "CVE-2020-7469",
          "STATE": "PUBLIC"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "FreeBSD",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "FreeBSD 12.2-RELEASE before p1, 12.1-RELEASE before p11, 11.4-RELEASE before p5"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "n/a"
              }
            ]
          }
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "value": "In FreeBSD 12.2-STABLE before r367402, 11.4-STABLE before r368202, 12.2-RELEASE before p1, 12.1-RELEASE before p11 and 11.4-RELEASE before p5 the handler for a routing option caches a pointer into the packet buffer holding the ICMPv6 message. However, when processing subsequent options the packet buffer may be freed, rendering the cached pointer invalid. The network stack may later dereference the pointer, potentially triggering a use-after-free."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "Use after free"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://security.FreeBSD.org/advisories/FreeBSD-SA-20:31.icmp6.asc",
              "refsource": "MISC",
              "url": "https://security.FreeBSD.org/advisories/FreeBSD-SA-20:31.icmp6.asc"
            },
            {
              "name": "https://security.netapp.com/advisory/ntap-20210720-0001/",
              "refsource": "CONFIRM",
              "url": "https://security.netapp.com/advisory/ntap-20210720-0001/"
            }
          ]
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "63664ac6-956c-4cba-a5d0-f46076e16109",
    "assignerShortName": "freebsd",
    "cveId": "CVE-2020-7469",
    "datePublished": "2021-06-04T11:55:55.000Z",
    "dateReserved": "2020-01-21T00:00:00.000Z",
    "dateUpdated": "2024-08-04T09:33:19.700Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

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.