Vulnerability-Lookup

CNVD-2021-32622

Vulnerability from cnvd - Published: 2021-05-06

Title

Unbound整数溢出漏洞（CNVD-2021-32622）

Description

Unbound是一个支持验证、递归、缓存功能的DNS解析器。 Unbound 1.9.5之前版本中的区域分配器存在整数溢出漏洞。攻击者可通过ALIGN_UP宏利用该漏洞导致整数溢出。

Severity

高

Patch Name

Unbound整数溢出漏洞（CNVD-2021-32622）的补丁

Patch Description

Unbound是一个支持验证、递归、缓存功能的DNS解析器。 Unbound 1.9.5之前版本中的区域分配器存在整数溢出漏洞。攻击者可通过ALIGN_UP宏利用该漏洞导致整数溢出。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://lists.nlnetlabs.nl/pipermail/unbound-users/2019-December/

Reference

https://nvd.nist.gov/vuln/detail/CVE-2019-25033

Impacted products

Name
NLnet Labs Unbound <1.9.5

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2019-25033",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2019-25033"
    }
  },
  "description": "Unbound\u662f\u4e00\u4e2a\u652f\u6301\u9a8c\u8bc1\u3001\u9012\u5f52\u3001\u7f13\u5b58\u529f\u80fd\u7684DNS\u89e3\u6790\u5668\u3002\n\nUnbound 1.9.5\u4e4b\u524d\u7248\u672c\u4e2d\u7684\u533a\u57df\u5206\u914d\u5668\u5b58\u5728\u6574\u6570\u6ea2\u51fa\u6f0f\u6d1e\u3002\u653b\u51fb\u8005\u53ef\u901a\u8fc7ALIGN_UP\u5b8f\u5229\u7528\u8be5\u6f0f\u6d1e\u5bfc\u81f4\u6574\u6570\u6ea2\u51fa\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://lists.nlnetlabs.nl/pipermail/unbound-users/2019-December/",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2021-32622",
  "openTime": "2021-05-06",
  "patchDescription": "Unbound\u662f\u4e00\u4e2a\u652f\u6301\u9a8c\u8bc1\u3001\u9012\u5f52\u3001\u7f13\u5b58\u529f\u80fd\u7684DNS\u89e3\u6790\u5668\u3002\r\n\r\nUnbound 1.9.5\u4e4b\u524d\u7248\u672c\u4e2d\u7684\u533a\u57df\u5206\u914d\u5668\u5b58\u5728\u6574\u6570\u6ea2\u51fa\u6f0f\u6d1e\u3002\u653b\u51fb\u8005\u53ef\u901a\u8fc7ALIGN_UP\u5b8f\u5229\u7528\u8be5\u6f0f\u6d1e\u5bfc\u81f4\u6574\u6570\u6ea2\u51fa\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": "Unbound\u6574\u6570\u6ea2\u51fa\u6f0f\u6d1e\uff08CNVD-2021-32622\uff09\u7684\u8865\u4e01",
  "products": {
    "product": "NLnet Labs Unbound \u003c1.9.5"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2019-25033",
  "serverity": "\u9ad8",
  "submitTime": "2021-04-28",
  "title": "Unbound\u6574\u6570\u6ea2\u51fa\u6f0f\u6d1e\uff08CNVD-2021-32622\uff09"
}

CVE-2019-25033 (GCVE-0-2019-25033)

Vulnerability from cvelistv5 – Published: 2021-04-27 05:17 – Updated: 2024-08-05 03:00 Disputed

Summary

Unbound before 1.9.5 allows an integer overflow in the regional allocator via the ALIGN_UP macro. NOTE: The vendor disputes that this is a vulnerability. Although the code may be vulnerable, a running Unbound installation cannot be remotely or locally exploited

Severity

No CVSS data available.

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-06-26 20:24 UTC

CWE

Assigner

mitre mitre root Scorecard

References

3 references

URL	Tags
https://ostif.org/our-audit-of-unbound-dns-by-x41…	x_refsource_MISC
https://lists.debian.org/debian-lts-announce/2021…	mailing-listx_refsource_MLIST
https://security.netapp.com/advisory/ntap-2021050…	x_refsource_CONFIRM

Show details on NVD website

JSON

To clipboard

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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.

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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Action not permitted

CNVD-2021-32622

CVE-2019-25033 (GCVE-0-2019-25033)

Tags

Sightings

Nomenclature

Related by attack behaviour