Vulnerability-Lookup

CNVD-2019-42439

Vulnerability from cnvd - Published: 2019-11-27

Title

OpenWrt ustream-ssl库信息泄露漏洞（CNVD-2019-42439）

Description

OpenWrt是一套针对嵌入式设备的Linux操作系统。ustream-ssl是其中的一个加密库。 OpenWrt 18.06.4版本和15.05.1版本中的ustream-ssl库存在信息泄露漏洞，攻击者可通过默认密码或者硬编码密码、硬编码证书等利用该漏洞攻击受影响组件。

Severity

中

Patch Name

OpenWrt ustream-ssl库信息泄露漏洞（CNVD-2019-42439）的补丁

Patch Description

OpenWrt是一套针对嵌入式设备的Linux操作系统。ustream-ssl是其中的一个加密库。 OpenWrt 18.06.4版本和15.05.1版本中的ustream-ssl库存在信息泄露漏洞，攻击者可通过默认密码或者硬编码密码、硬编码证书等利用该漏洞攻击受影响组件。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://openwrt.org/

Reference

https://www.talosintelligence.com/vulnerability_reports/TALOS-2019-0893

Impacted products

Name
['OpenWrt OpenWrt 18.06.4', 'OpenWrt OpenWrt 15.05.1']

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2019-5101"
    }
  },
  "description": "OpenWrt\u662f\u4e00\u5957\u9488\u5bf9\u5d4c\u5165\u5f0f\u8bbe\u5907\u7684Linux\u64cd\u4f5c\u7cfb\u7edf\u3002ustream-ssl\u662f\u5176\u4e2d\u7684\u4e00\u4e2a\u52a0\u5bc6\u5e93\u3002\n\nOpenWrt 18.06.4\u7248\u672c\u548c15.05.1\u7248\u672c\u4e2d\u7684ustream-ssl\u5e93\u5b58\u5728\u4fe1\u606f\u6cc4\u9732\u6f0f\u6d1e\uff0c\u653b\u51fb\u8005\u53ef\u901a\u8fc7\u9ed8\u8ba4\u5bc6\u7801\u6216\u8005\u786c\u7f16\u7801\u5bc6\u7801\u3001\u786c\u7f16\u7801\u8bc1\u4e66\u7b49\u5229\u7528\u8be5\u6f0f\u6d1e\u653b\u51fb\u53d7\u5f71\u54cd\u7ec4\u4ef6\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://openwrt.org/",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2019-42439",
  "openTime": "2019-11-27",
  "patchDescription": "OpenWrt\u662f\u4e00\u5957\u9488\u5bf9\u5d4c\u5165\u5f0f\u8bbe\u5907\u7684Linux\u64cd\u4f5c\u7cfb\u7edf\u3002ustream-ssl\u662f\u5176\u4e2d\u7684\u4e00\u4e2a\u52a0\u5bc6\u5e93\u3002\r\n\r\nOpenWrt 18.06.4\u7248\u672c\u548c15.05.1\u7248\u672c\u4e2d\u7684ustream-ssl\u5e93\u5b58\u5728\u4fe1\u606f\u6cc4\u9732\u6f0f\u6d1e\uff0c\u653b\u51fb\u8005\u53ef\u901a\u8fc7\u9ed8\u8ba4\u5bc6\u7801\u6216\u8005\u786c\u7f16\u7801\u5bc6\u7801\u3001\u786c\u7f16\u7801\u8bc1\u4e66\u7b49\u5229\u7528\u8be5\u6f0f\u6d1e\u653b\u51fb\u53d7\u5f71\u54cd\u7ec4\u4ef6\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": "OpenWrt ustream-ssl\u5e93\u4fe1\u606f\u6cc4\u9732\u6f0f\u6d1e\uff08CNVD-2019-42439\uff09\u7684\u8865\u4e01",
  "products": {
    "product": [
      "OpenWrt OpenWrt 18.06.4",
      "OpenWrt OpenWrt 15.05.1"
    ]
  },
  "referenceLink": "https://www.talosintelligence.com/vulnerability_reports/TALOS-2019-0893",
  "serverity": "\u4e2d",
  "submitTime": "2019-11-19",
  "title": "OpenWrt ustream-ssl\u5e93\u4fe1\u606f\u6cc4\u9732\u6f0f\u6d1e\uff08CNVD-2019-42439\uff09"
}

CVE-2019-5101 (GCVE-0-2019-5101)

Vulnerability from cvelistv5 – Published: 2019-11-18 17:59 – Updated: 2024-08-04 19:47

Summary

An exploitable information leak vulnerability exists in the ustream-ssl library of OpenWrt, versions 18.06.4 and 15.05.1. When connecting to a remote server, the server's SSL certificate is checked but no action is taken when the certificate is invalid. An attacker could exploit this behavior by performing a man-in-the-middle attack, providing any certificate, leading to the theft of all the data sent by the client during the first request.An exploitable information leak vulnerability exists in the ustream-ssl library of OpenWrt, versions 18.06.4 and 15.05.1. When connecting to a remote server, the server's SSL certificate is checked but no action is taken when the certificate is invalid. An attacker could exploit this behavior by performing a man-in-the-middle attack, providing any certificate, leading to the theft of all the data sent by the client during the first request. After an SSL connection is initialized via _ustream_ssl_init, and after any data (e.g. the client's HTTP request) is written to the stream using ustream_printf, the code eventually enters the function _ustream_ssl_poll, which is used to dispatch the read/write events

Severity

4 (Medium)


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

CWE

CWE-295 - Improper Certificate Validation

Assigner

talos mitre root

References

1 reference

URL	Tags
https://talosintelligence.com/vulnerability_repor…

Impacted products

1 product

Vendor	Product	Version
OpenWRT	OpenWRT	Affected: OpenWrt 15.05.1, via wget (busybox) Affected: OpenWrt 18.06.4, via wget (uclient-fetch)

Credits

Discovered by Claudio Bozzato of Cisco Talos.

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T19:47:55.716Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "name": "https://talosintelligence.com/vulnerability_reports/TALOS-2019-0893",
            "tags": [
              "x_transferred"
            ],
            "url": "https://talosintelligence.com/vulnerability_reports/TALOS-2019-0893"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "OpenWRT",
          "vendor": "OpenWRT",
          "versions": [
            {
              "status": "affected",
              "version": "OpenWrt 15.05.1, via wget (busybox)"
            },
            {
              "status": "affected",
              "version": "OpenWrt 18.06.4, via wget (uclient-fetch)"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "value": "Discovered by Claudio Bozzato of Cisco Talos."
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "An exploitable information leak vulnerability exists in the ustream-ssl library of OpenWrt, versions 18.06.4 and 15.05.1. When connecting to a remote server, the server\u0027s SSL certificate is checked but no action is taken when the certificate is invalid. An attacker could exploit this behavior by performing a man-in-the-middle attack, providing any certificate, leading to the theft of all the data sent by the client during the first request.An exploitable information leak vulnerability exists in the ustream-ssl library of OpenWrt, versions 18.06.4 and 15.05.1. When connecting to a remote server, the server\u0027s SSL certificate is checked but no action is taken when the certificate is invalid. An attacker could exploit this behavior by performing a man-in-the-middle attack, providing any certificate, leading to the theft of all the data sent by the client during the first request. After an SSL connection is initialized via _ustream_ssl_init, and after any data (e.g. the client\u0027s HTTP request) is written to the stream using ustream_printf, the code eventually enters the function _ustream_ssl_poll, which is used to dispatch the read/write events"
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 4,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:N/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-295",
              "description": "CWE-295: Improper Certificate Validation",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2023-07-12T17:51:22.359Z",
        "orgId": "b86d76f8-0f8a-4a96-a78d-d8abfc7fc29b",
        "shortName": "talos"
      },
      "references": [
        {
          "name": "https://talosintelligence.com/vulnerability_reports/TALOS-2019-0893",
          "url": "https://talosintelligence.com/vulnerability_reports/TALOS-2019-0893"
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "b86d76f8-0f8a-4a96-a78d-d8abfc7fc29b",
    "assignerShortName": "talos",
    "cveId": "CVE-2019-5101",
    "datePublished": "2019-11-18T17:59:12.000Z",
    "dateReserved": "2019-01-04T00:00:00.000Z",
    "dateUpdated": "2024-08-04T19:47:55.716Z",
    "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.