Vulnerability-Lookup

CNVD-2022-86337

Vulnerability from cnvd - Published: 2022-12-07

Title

FRRouting存在权限提升漏洞

Description

FRRouting是FRRouting Project开源的一种在类Unix平台上运行的网络路由软件套件。 FRRouting存在安全漏洞，攻击者可利用漏洞通过配置创建绕过其限制方式进行权限提升。

Severity

高

Formal description

厂商尚未提供漏洞修复方案，请关注厂商主页更新： https://frrouting.org

Reference

https://vigilance.fr/vulnerability/FRRouting-privilege-escalation-via-Config-Creation-39943

Impacted products

Name
FRRouting FRRouting

Show details on source website

JSON

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{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2022-42917",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2022-42917"
    }
  },
  "description": "FRRouting\u662fFRRouting Project\u5f00\u6e90\u7684\u4e00\u79cd\u5728\u7c7bUnix\u5e73\u53f0\u4e0a\u8fd0\u884c\u7684\u7f51\u7edc\u8def\u7531\u8f6f\u4ef6\u5957\u4ef6\u3002\n\nFRRouting\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u6f0f\u6d1e\u901a\u8fc7\u914d\u7f6e\u521b\u5efa\u7ed5\u8fc7\u5176\u9650\u5236\u65b9\u5f0f\u8fdb\u884c\u6743\u9650\u63d0\u5347\u3002",
  "formalWay": "\u5382\u5546\u5c1a\u672a\u63d0\u4f9b\u6f0f\u6d1e\u4fee\u590d\u65b9\u6848\uff0c\u8bf7\u5173\u6ce8\u5382\u5546\u4e3b\u9875\u66f4\u65b0\uff1a\r\nhttps://frrouting.org",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2022-86337",
  "openTime": "2022-12-07",
  "products": {
    "product": "FRRouting FRRouting"
  },
  "referenceLink": "https://vigilance.fr/vulnerability/FRRouting-privilege-escalation-via-Config-Creation-39943",
  "serverity": "\u9ad8",
  "submitTime": "2022-11-23",
  "title": "FRRouting\u5b58\u5728\u6743\u9650\u63d0\u5347\u6f0f\u6d1e"
}

CVE-2022-42917 (GCVE-0-2022-42917)

Vulnerability from cvelistv5 – Published: 2026-09-13 00:00 – Updated: 2026-09-14 18:15

Summary

In FRRouting FRR before 8.5, the service user (usually frr) can escalate its privileges to root by monitoring the configuration directory (/etc/frr) and replacing config files upon creation with, for example, symlinks to change the ownership of arbitrary files. This is a TOCTOU Race Condition caused by a combination of touch and chown.

Severity

6.7 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-14 15:03 UTC

CWE

CWE-367 - Time-of-check Time-of-use (TOCTOU) Race Condition

Assigner

mitre mitre root

References

4 references

URL	Tags
https://bugzilla.suse.com/show_bug.cgi?id=1204124
https://frrouting.org/security/cve-2022-42917/
https://github.com/FRRouting/frr/commit/972cdc560…
https://github.com/FRRouting/frr/compare/frr-8.4.…

Impacted products

1 product

Vendor	Product	Version
FRRouting	FRRouting	Affected: 0 , < 4.5 (custom) cpe:2.3:a:frrouting:frrouting::::::::

Show details on NVD website

JSON

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                "id": "CVE-2022-42917",
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                "timestamp": "2026-09-14T15:03:58.372990Z",
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Sightings

Author	Source	Type	Date	Other

Nomenclature

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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.
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CNVD-2022-86337

CVE-2022-42917 (GCVE-0-2022-42917)

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