Vulnerability-Lookup

CNVD-2018-00308

Vulnerability from cnvd - Published: 2018-01-05

Title

Heimdal拒绝服务漏洞

Description

Heimdal是一个Kerberos 5的实现。 Heimdal 7.1.0版本中存在安全漏洞。远程攻击者可通过发送特制的UDP数据包利用该漏洞造成拒绝服务（崩溃、空指针逆向引用和段错误）。

Severity

中

Patch Name

Heimdal拒绝服务漏洞的补丁

Patch Description

Heimdal是一个Kerberos 5的实现。 Heimdal 7.1.0版本中存在安全漏洞。远程攻击者可通过发送特制的UDP数据包利用该漏洞造成拒绝服务（崩溃、空指针逆向引用和段错误）。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

厂商已发布漏洞修复程序，请及时关注更新： https://github.com/heimdal/heimdal/commit/1a6a6e462dc2ac6111f9e02c6852ddec4849b887

Reference

https://nvd.nist.gov/vuln/detail/CVE-2017-17439 https://www.debian.org/security/2017/dsa-4055

Impacted products

Name
Heimdal Heimdal 7.1.0

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2017-17439"
    }
  },
  "description": "Heimdal\u662f\u4e00\u4e2aKerberos 5\u7684\u5b9e\u73b0\u3002\r\n\r\nHeimdal 7.1.0\u7248\u672c\u4e2d\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\u3002\u8fdc\u7a0b\u653b\u51fb\u8005\u53ef\u901a\u8fc7\u53d1\u9001\u7279\u5236\u7684UDP\u6570\u636e\u5305\u5229\u7528\u8be5\u6f0f\u6d1e\u9020\u6210\u62d2\u7edd\u670d\u52a1\uff08\u5d29\u6e83\u3001\u7a7a\u6307\u9488\u9006\u5411\u5f15\u7528\u548c\u6bb5\u9519\u8bef\uff09\u3002",
  "discovererName": "unknow",
  "formalWay": "\u5382\u5546\u5df2\u53d1\u5e03\u6f0f\u6d1e\u4fee\u590d\u7a0b\u5e8f\uff0c\u8bf7\u53ca\u65f6\u5173\u6ce8\u66f4\u65b0\uff1a\r\nhttps://github.com/heimdal/heimdal/commit/1a6a6e462dc2ac6111f9e02c6852ddec4849b887",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2018-00308",
  "openTime": "2018-01-05",
  "patchDescription": "Heimdal\u662f\u4e00\u4e2aKerberos 5\u7684\u5b9e\u73b0\u3002\r\n\r\nHeimdal 7.1.0\u7248\u672c\u4e2d\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\u3002\u8fdc\u7a0b\u653b\u51fb\u8005\u53ef\u901a\u8fc7\u53d1\u9001\u7279\u5236\u7684UDP\u6570\u636e\u5305\u5229\u7528\u8be5\u6f0f\u6d1e\u9020\u6210\u62d2\u7edd\u670d\u52a1\uff08\u5d29\u6e83\u3001\u7a7a\u6307\u9488\u9006\u5411\u5f15\u7528\u548c\u6bb5\u9519\u8bef\uff09\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": "Heimdal\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "Heimdal Heimdal 7.1.0"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2017-17439\r\nhttps://www.debian.org/security/2017/dsa-4055",
  "serverity": "\u4e2d",
  "submitTime": "2017-12-07",
  "title": "Heimdal\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e"
}

CVE-2017-17439 (GCVE-0-2017-17439)

Vulnerability from cvelistv5 – Published: 2017-12-06 15:00 – Updated: 2024-08-05 20:51

Summary

In Heimdal through 7.4, remote unauthenticated attackers are able to crash the KDC by sending a crafted UDP packet containing empty data fields for client name or realm. The parser would unconditionally dereference NULL pointers in that case, leading to a segmentation fault. This is related to the _kdc_as_rep function in kdc/kerberos5.c and the der_length_visible_string function in lib/asn1/der_length.c.

Severity

No CVSS data available.

CWE

Assigner

mitre mitre root

References

7 references

URL	Tags
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug…	x_refsource_CONFIRM
https://github.com/heimdal/heimdal/commit/1a6a6e4…	x_refsource_CONFIRM
http://www.h5l.org/pipermail/heimdal-announce/201…	x_refsource_CONFIRM
http://www.h5l.org/pipermail/heimdal-discuss/2017…	x_refsource_MISC
https://github.com/heimdal/heimdal/issues/353	x_refsource_CONFIRM
http://h5l.org/advisories.html?show=2017-12-08	x_refsource_CONFIRM
https://www.debian.org/security/2017/dsa-4055	vendor-advisoryx_refsource_DEBIAN

Date Public

2017-12-06 00:00

Show details on NVD website

JSON

To clipboard

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              "name": "http://www.h5l.org/pipermail/heimdal-announce/2017-December/000008.html",
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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.

Action not permitted

CNVD-2018-00308

CVE-2017-17439 (GCVE-0-2017-17439)

Tags

Sightings

Nomenclature

Related by attack behaviour