Vulnerability-Lookup

CNVD-2023-75809

Vulnerability from cnvd - Published: 2023-10-11

Title

cURL SOCKS5堆溢出漏洞

Description

cURL是一个网络数据传输项目，通常说cURL是指cURL命令行工具，cURL的底层使用的是libcurl库。 cURL SOCKS5存在堆溢出漏洞，攻击者可利用该漏洞构造恶意主机名，造成代码执行。

Severity

高

Patch Name

cURL SOCKS5堆溢出漏洞的补丁

Patch Description

cURL是一个网络数据传输项目，通常说cURL是指cURL命令行工具，cURL的底层使用的是libcurl库。 cURL SOCKS5存在堆溢出漏洞，攻击者可利用该漏洞构造恶意主机名，造成代码执行。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://github.com/curl/curl/commit/fb4415d8aee6c1

Reference

https://curl.se/docs/CVE-2023-38545.html

Impacted products

Name
cURL libcurl >=7.69.0，<=8.3.0

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2023-38545"
    }
  },
  "description": "cURL\u662f\u4e00\u4e2a\u7f51\u7edc\u6570\u636e\u4f20\u8f93\u9879\u76ee\uff0c\u901a\u5e38\u8bf4cURL\u662f\u6307cURL\u547d\u4ee4\u884c\u5de5\u5177\uff0ccURL\u7684\u5e95\u5c42\u4f7f\u7528\u7684\u662flibcurl\u5e93\u3002\n\ncURL SOCKS5\u5b58\u5728\u5806\u6ea2\u51fa\u6f0f\u6d1e\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u6784\u9020\u6076\u610f\u4e3b\u673a\u540d\uff0c\u9020\u6210\u4ee3\u7801\u6267\u884c\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/curl/curl/commit/fb4415d8aee6c1",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2023-75809",
  "openTime": "2023-10-11",
  "patchDescription": "cURL\u662f\u4e00\u4e2a\u7f51\u7edc\u6570\u636e\u4f20\u8f93\u9879\u76ee\uff0c\u901a\u5e38\u8bf4cURL\u662f\u6307cURL\u547d\u4ee4\u884c\u5de5\u5177\uff0ccURL\u7684\u5e95\u5c42\u4f7f\u7528\u7684\u662flibcurl\u5e93\u3002\r\n\r\ncURL SOCKS5\u5b58\u5728\u5806\u6ea2\u51fa\u6f0f\u6d1e\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u6784\u9020\u6076\u610f\u4e3b\u673a\u540d\uff0c\u9020\u6210\u4ee3\u7801\u6267\u884c\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": "cURL SOCKS5\u5806\u6ea2\u51fa\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "cURL libcurl \u003e=7.69.0\uff0c\u003c=8.3.0"
  },
  "referenceLink": "https://curl.se/docs/CVE-2023-38545.html",
  "serverity": "\u9ad8",
  "submitTime": "2023-10-11",
  "title": "cURL SOCKS5\u5806\u6ea2\u51fa\u6f0f\u6d1e"
}

CVE-2023-38545 (GCVE-0-2023-38545)

Vulnerability from cvelistv5 – Published: 2023-10-18 03:52 – Updated: 2026-07-14 12:03

Summary

This flaw makes curl overflow a heap based buffer in the SOCKS5 proxy handshake. When curl is asked to pass along the host name to the SOCKS5 proxy to allow that to resolve the address instead of it getting done by curl itself, the maximum length that host name can be is 255 bytes. If the host name is detected to be longer, curl switches to local name resolving and instead passes on the resolved address only. Due to this bug, the local variable that means "let the host resolve the name" could get the wrong value during a slow SOCKS5 handshake, and contrary to the intention, copy the too long host name to the target buffer instead of copying just the resolved address there. The target buffer being a heap based buffer, and the host name coming from the URL that curl has been told to operate with.

Severity

8.8 (High)


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

SSVC

Exploitation: poc Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-10-17 21:11 UTC

CWE

CWE-787 - Out-of-bounds Write

Assigner

hackerone CNA under the mitre root

CNA scorecard D 59/100 over 192 records in the last 180 days details

References

21 references

URL	Tags
https://curl.se/docs/CVE-2023-38545.html
https://security.netapp.com/advisory/ntap-2023102…
https://lists.fedoraproject.org/archives/list/pac…
https://www.secpod.com/blog/high-severity-heap-bu…
https://support.apple.com/kb/HT214036
https://support.apple.com/kb/HT214063
https://support.apple.com/kb/HT214057
https://support.apple.com/kb/HT214058
http://seclists.org/fulldisclosure/2024/Jan/34
http://seclists.org/fulldisclosure/2024/Jan/37
http://seclists.org/fulldisclosure/2024/Jan/38
https://security.netapp.com/advisory/ntap-2024020…
https://forum.vmssoftware.com/viewtopic.php?f=8&t=8868
https://github.com/bcdannyboy/CVE-2023-38545	exploit
https://github.com/dbrugman/CVE-2023-38545-POC	exploit
https://github.com/UTsweetyfish/CVE-2023-38545	exploit
https://cert-portal.siemens.com/productcert/html/…
https://cert-portal.siemens.com/productcert/html/…
https://cert-portal.siemens.com/productcert/html/…
https://cert-portal.siemens.com/productcert/html/…
https://cert-portal.siemens.com/productcert/html/…

Impacted products

5 products

Vendor	Product	Version
curl	curl	Affected: 8.4.0 , < 8.4.0 (semver) Unaffected: 7.69.0 , < 7.69.0 (semver)
Siemens	RUGGEDCOM APE1808	Affected: 0 , < * (custom)
Siemens	SIMATIC S7-1500 CPU 1518-4 PN/DP MFP	Affected: V3.1.5 , < * (custom)
Siemens	SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP	Affected: V3.1.5 , < * (custom)
Siemens	SIPLUS S7-1500 CPU 1518-4 PN/DP MFP	Affected: V3.1.5 , < * (custom)

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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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.

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CNVD-2023-75809

CVE-2023-38545 (GCVE-0-2023-38545)

Tags

Sightings

Nomenclature

Related by attack behaviour