cnvd - cnvd-2023-75809

cnvd-2023-75809

Vulnerability from cnvd

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

Modified

2025-08-27 20:32

Severity ?

8.8 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

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.

References

▼	URL	Tags
	https://curl.se/docs/CVE-2023-38545.html
	https://security.netapp.com/advisory/ntap-20231027-0009/
	https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/OGMXNRNSJ4ETDK6FRNU3J7SABXPWCHSQ/
	https://www.secpod.com/blog/high-severity-heap-buffer-overflow-vulnerability/
	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-20240201-0005/
	https://forum.vmssoftware.com/viewtopic.php?f=8&t=8868

Impacted products

	Vendor	Product	Version
	curl	curl	Version: 8.4.0 ≤

Show details on NVD website

JSON

To clipboard

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            "url": "https://support.apple.com/kb/HT214036"
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            "url": "https://support.apple.com/kb/HT214063"
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            "url": "https://support.apple.com/kb/HT214057"
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            "url": "https://support.apple.com/kb/HT214058"
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        "metrics": [
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              "availabilityImpact": "HIGH",
              "baseScore": 8.8,
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    "state": "PUBLISHED"
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  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
Confirmed: The vulnerability is confirmed from an analyst perspective.
Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
Patched: This vulnerability was successfully patched by the user reporting the sighting.
Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
Not confirmed: The user expresses doubt about the veracity of the vulnerability.
Not patched: This vulnerability was not successfully patched by the user reporting the sighting.

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