Vulnerability-Lookup

CNVD-2019-41425

Vulnerability from cnvd - Published: 2019-11-20

Title

wolfSSL缓冲区溢出漏洞（CNVD-2019-41425）

Description

wolfSSL（前称CyaSSL）是美国wolfSSL公司的一个针对嵌入式系统开发人员使用的小的、可移植的嵌入式SSL编程库。 wolfSSL 4.1.0版本至4.2.0c版本中的GetName in wolfcrypt/src/asn.c文件的GetName的DecodedCert结构存在缓冲区溢出漏洞，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导致缓冲区溢出或堆溢出等。

Severity

中

Patch Name

wolfSSL缓冲区溢出漏洞（CNVD-2019-41425）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/wolfSSL/wolfssl/issues/2555

Reference

https://nvd.nist.gov/vuln/detail/CVE-2019-18840

Impacted products

Name
wolfSSL wolfSSL >=4.1.0，<=4.2.0c

Show details on source website

JSON

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{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2019-18840"
    }
  },
  "description": "wolfSSL\uff08\u524d\u79f0CyaSSL\uff09\u662f\u7f8e\u56fdwolfSSL\u516c\u53f8\u7684\u4e00\u4e2a\u9488\u5bf9\u5d4c\u5165\u5f0f\u7cfb\u7edf\u5f00\u53d1\u4eba\u5458\u4f7f\u7528\u7684\u5c0f\u7684\u3001\u53ef\u79fb\u690d\u7684\u5d4c\u5165\u5f0fSSL\u7f16\u7a0b\u5e93\u3002\n\nwolfSSL 4.1.0\u7248\u672c\u81f34.2.0c\u7248\u672c\u4e2d\u7684GetName in wolfcrypt/src/asn.c\u6587\u4ef6\u7684GetName\u7684DecodedCert\u7ed3\u6784\u5b58\u5728\u7f13\u51b2\u533a\u6ea2\u51fa\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\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u5bfc\u81f4\u7f13\u51b2\u533a\u6ea2\u51fa\u6216\u5806\u6ea2\u51fa\u7b49\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/wolfSSL/wolfssl/issues/2555",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2019-41425",
  "openTime": "2019-11-20",
  "patchDescription": "wolfSSL\uff08\u524d\u79f0CyaSSL\uff09\u662f\u7f8e\u56fdwolfSSL\u516c\u53f8\u7684\u4e00\u4e2a\u9488\u5bf9\u5d4c\u5165\u5f0f\u7cfb\u7edf\u5f00\u53d1\u4eba\u5458\u4f7f\u7528\u7684\u5c0f\u7684\u3001\u53ef\u79fb\u690d\u7684\u5d4c\u5165\u5f0fSSL\u7f16\u7a0b\u5e93\u3002\r\n\r\nwolfSSL 4.1.0\u7248\u672c\u81f34.2.0c\u7248\u672c\u4e2d\u7684GetName in wolfcrypt/src/asn.c\u6587\u4ef6\u7684GetName\u7684DecodedCert\u7ed3\u6784\u5b58\u5728\u7f13\u51b2\u533a\u6ea2\u51fa\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\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u5bfc\u81f4\u7f13\u51b2\u533a\u6ea2\u51fa\u6216\u5806\u6ea2\u51fa\u7b49\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": "wolfSSL\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\uff08CNVD-2019-41425\uff09\u7684\u8865\u4e01",
  "products": {
    "product": "wolfSSL wolfSSL \u003e=4.1.0\uff0c\u003c=4.2.0c"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2019-18840",
  "serverity": "\u4e2d",
  "submitTime": "2019-11-11",
  "title": "wolfSSL\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\uff08CNVD-2019-41425\uff09"
}

CVE-2019-18840 (GCVE-0-2019-18840)

Vulnerability from cvelistv5 – Published: 2019-11-09 12:58 – Updated: 2024-08-05 02:02

Summary

In wolfSSL 4.1.0 through 4.2.0c, there are missing sanity checks of memory accesses in parsing ASN.1 certificate data while handshaking. Specifically, there is a one-byte heap-based buffer overflow inside the DecodedCert structure in GetName in wolfcrypt/src/asn.c because the domain name location index is mishandled. Because a pointer is overwritten, there is an invalid free.

Severity

7.5 (High)


                        
                          CVSS:3.0/AC:L/AV:N/A:H/C:N/I:N/PR:N/S:U/UI:N

CWE

Assigner

mitre mitre root

References

1 reference

URL	Tags
https://github.com/wolfSSL/wolfssl/issues/2555	x_refsource_MISC

Show details on NVD website

JSON

To clipboard

{
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      {
        "providerMetadata": {
          "dateUpdated": "2024-08-05T02:02:39.610Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
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          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/wolfSSL/wolfssl/issues/2555"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
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          "product": "n/a",
          "vendor": "n/a",
          "versions": [
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      ],
      "descriptions": [
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          "lang": "en",
          "value": "In wolfSSL 4.1.0 through 4.2.0c, there are missing sanity checks of memory accesses in parsing ASN.1 certificate data while handshaking. Specifically, there is a one-byte heap-based buffer overflow inside the DecodedCert structure in GetName in wolfcrypt/src/asn.c because the domain name location index is mishandled. Because a pointer is overwritten, there is an invalid free."
        }
      ],
      "metrics": [
        {
          "cvssV3_0": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.0/AC:L/AV:N/A:H/C:N/I:N/PR:N/S:U/UI:N",
            "version": "3.0"
          }
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      "providerMetadata": {
        "dateUpdated": "2019-11-09T12:58:52.000Z",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
      "references": [
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/wolfSSL/wolfssl/issues/2555"
        }
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "cve@mitre.org",
          "ID": "CVE-2019-18840",
          "STATE": "PUBLIC"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "n/a",
                      "version": {
                        "version_data": [
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                            "version_value": "n/a"
                          }
                        ]
                      }
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                },
                "vendor_name": "n/a"
              }
            ]
          }
        },
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        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
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              "lang": "eng",
              "value": "In wolfSSL 4.1.0 through 4.2.0c, there are missing sanity checks of memory accesses in parsing ASN.1 certificate data while handshaking. Specifically, there is a one-byte heap-based buffer overflow inside the DecodedCert structure in GetName in wolfcrypt/src/asn.c because the domain name location index is mishandled. Because a pointer is overwritten, there is an invalid free."
            }
          ]
        },
        "impact": {
          "cvss": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
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            "confidentialityImpact": "NONE",
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            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.0/AC:L/AV:N/A:H/C:N/I:N/PR:N/S:U/UI:N",
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        "references": {
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            {
              "name": "https://github.com/wolfSSL/wolfssl/issues/2555",
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              "url": "https://github.com/wolfSSL/wolfssl/issues/2555"
            }
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        }
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    "state": "PUBLISHED"
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  "dataVersion": "5.1"
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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.

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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.

Action not permitted

CNVD-2019-41425

CVE-2019-18840 (GCVE-0-2019-18840)

Tags

Sightings

Nomenclature

Related by attack behaviour