Vulnerability-Lookup

CNVD-2020-13529

Vulnerability from cnvd - Published: 2020-02-26

Title

LibTomCrypt内存破坏漏洞

Description

LibTomCrypt是一个相当全面的模块化便携式加密工具包。 LibTomCrypt 1.18.2及更早版本存在内存破坏漏洞，该漏洞源于der_decode_utf8_string.c中的der_decode_utf8_string函数未能正确检测某些无效的UTF-8序列，攻击者可通过特制DER编码数据利用该漏洞导致拒绝服务或从其他内存位置读取信息。

Severity

中

Patch Name

LibTomCrypt内存破坏漏洞的补丁

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/libtom/libtomcrypt/pull/508

Reference

https://nvd.nist.gov/vuln/detail/CVE-2019-17362 https://github.com/libtom/libtomcrypt/issues/507 https://vuldb.com/?id.142995

Impacted products

Name
libtom LibTomCrypt <=1.18.2

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2019-17362",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2019-17362"
    }
  },
  "description": "LibTomCrypt\u662f\u4e00\u4e2a\u76f8\u5f53\u5168\u9762\u7684\u6a21\u5757\u5316\u4fbf\u643a\u5f0f\u52a0\u5bc6\u5de5\u5177\u5305\u3002\n\nLibTomCrypt 1.18.2\u53ca\u66f4\u65e9\u7248\u672c\u5b58\u5728\u5185\u5b58\u7834\u574f\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8eder_decode_utf8_string.c\u4e2d\u7684der_decode_utf8_string\u51fd\u6570\u672a\u80fd\u6b63\u786e\u68c0\u6d4b\u67d0\u4e9b\u65e0\u6548\u7684UTF-8\u5e8f\u5217\uff0c\u653b\u51fb\u8005\u53ef\u901a\u8fc7\u7279\u5236DER\u7f16\u7801\u6570\u636e\u5229\u7528\u8be5\u6f0f\u6d1e\u5bfc\u81f4\u62d2\u7edd\u670d\u52a1\u6216\u4ece\u5176\u4ed6\u5185\u5b58\u4f4d\u7f6e\u8bfb\u53d6\u4fe1\u606f\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/libtom/libtomcrypt/pull/508",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2020-13529",
  "openTime": "2020-02-26",
  "patchDescription": "LibTomCrypt\u662f\u4e00\u4e2a\u76f8\u5f53\u5168\u9762\u7684\u6a21\u5757\u5316\u4fbf\u643a\u5f0f\u52a0\u5bc6\u5de5\u5177\u5305\u3002\r\n\r\nLibTomCrypt 1.18.2\u53ca\u66f4\u65e9\u7248\u672c\u5b58\u5728\u5185\u5b58\u7834\u574f\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8eder_decode_utf8_string.c\u4e2d\u7684der_decode_utf8_string\u51fd\u6570\u672a\u80fd\u6b63\u786e\u68c0\u6d4b\u67d0\u4e9b\u65e0\u6548\u7684UTF-8\u5e8f\u5217\uff0c\u653b\u51fb\u8005\u53ef\u901a\u8fc7\u7279\u5236DER\u7f16\u7801\u6570\u636e\u5229\u7528\u8be5\u6f0f\u6d1e\u5bfc\u81f4\u62d2\u7edd\u670d\u52a1\u6216\u4ece\u5176\u4ed6\u5185\u5b58\u4f4d\u7f6e\u8bfb\u53d6\u4fe1\u606f\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": "LibTomCrypt\u5185\u5b58\u7834\u574f\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "libtom LibTomCrypt \u003c=1.18.2"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2019-17362\r\nhttps://github.com/libtom/libtomcrypt/issues/507\r\nhttps://vuldb.com/?id.142995",
  "serverity": "\u4e2d",
  "submitTime": "2019-10-09",
  "title": "LibTomCrypt\u5185\u5b58\u7834\u574f\u6f0f\u6d1e"
}

CVE-2019-17362 (GCVE-0-2019-17362)

Vulnerability from cvelistv5 – Published: 2019-10-09 00:00 – Updated: 2024-11-15 15:03

Summary

In LibTomCrypt through 1.18.2, the der_decode_utf8_string function (in der_decode_utf8_string.c) does not properly detect certain invalid UTF-8 sequences. This allows context-dependent attackers to cause a denial of service (out-of-bounds read and crash) or read information from other memory locations via carefully crafted DER-encoded data.

Severity

No CVSS data available.

SSVC

Exploitation: poc Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2023-12-19 20:07 UTC

CWE

Assigner

mitre mitre root

References

10 references

URL	Tags
https://vuldb.com/?id.142995
https://github.com/libtom/libtomcrypt/issues/507
https://github.com/libtom/libtomcrypt/pull/508
https://lists.debian.org/debian-lts-announce/2019…	mailing-list
http://lists.opensuse.org/opensuse-security-annou…	vendor-advisory
http://lists.opensuse.org/opensuse-security-annou…	vendor-advisory
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…
https://lists.fedoraproject.org/archives/list/pac…

Show details on NVD website

JSON

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{
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          },
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            "url": "https://vuldb.com/?id.142995"
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          },
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            "tags": [
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            "url": "https://lists.debian.org/debian-lts-announce/2019/10/msg00010.html"
          },
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            "name": "openSUSE-SU-2019:2454",
            "tags": [
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            "url": "http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00020.html"
          },
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            "name": "openSUSE-SU-2019:2514",
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              "x_transferred"
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          },
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            "tags": [
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            ],
            "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/47YP5SXQ4RY6KMTK2HI5ZZR244XKRMCZ/"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
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            "other": {
              "content": {
                "id": "CVE-2019-17362",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2023-12-19T20:07:21.503083Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
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        "providerMetadata": {
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        }
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          "url": "https://vuldb.com/?id.142995"
        },
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          "url": "https://github.com/libtom/libtomcrypt/pull/508"
        },
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    "state": "PUBLISHED"
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  "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.

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