Home/CVE/libcurl did not check the server certificate of TLS connections done to a host specified as an IP address, when built to
CVE

CVE-2024-2466

libcurl did not check the server certificate of TLS connections done to a host specified as an IP address, when built to

libcurl did not check the server certificate of TLS connections done to a host specified as an IP address, when built to use mbedTLS. libcurl would wrongly avoid using the set hostname function when the specified hostname was given as an IP address, therefore completely skipping the certificate check. This affects all uses of TLS protocols (HTTPS, FTPS, IMAPS, POPS3, SMTPS, etc).

MEDIUM · CVSS 6.5 EPSS 0.00149
Schedule remediation
  • Public exploit or PoC is available
Sigma rules15 YARA rules0
⬡

Weakness Classification

CWE-297Improper Validation of Certificate with Host Mismatch
▤

Affected Products & Versions

9
haxx curl>= 8.5.0 and < 8.7.0
apple macos< 12.7.6
apple macos>= 13.0 and < 13.6.8
apple macos>= 14.0 and < 14.6
netapp h700s firmwareall versions
netapp bootstrap osall versions
netapp h300s firmwareall versions
netapp h410s firmwareall versions
⚠

Public Exploits & PoCs

2
pochackerone.com · 2416725hackerone.com
pocwww.vicarius.io · tls-certificate-check-bypass-curl-with-mbedtls-cve-2024-2...www.vicarius.io
◈

Sigma Hunt Rules

15
Exact rules name this CVE ID. Product rules name an affected product in their title. Related rules cover techniques used by actors who exploited this CVE. Showing the most relevant matches; the complete related set is on the full drill-down.
producthighSuspicious Download and Execute Pattern via Curl/Wget
producthighSuspicious File Download From File Sharing Domain Via Curl.EXE
producthighSuspicious File Download From IP Via Curl.EXE
producthighCurl Download And Execute Combination
producthighSuspicious Curl.EXE Download
productmediumSuspicious Curl File Upload - Linux
▣

Scoring & Timeline

6.5
MEDIUM · CVSS v3.1 · 2499f714-1537-4658-8207-48ae4bb9eae9
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD27 Mar 2024 · 08:15 AM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
SSVC triage · cisa-vulnrichment
Exploitation
poc
Automatable
no
Technical impact
partial
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
⚑

Vendor Advisories

14
suse-csafSUSE-SU-2025:20029-1
siemens-csafSSA-331112
siemens-csafSSA-417159
msrcCVE-2024-2466
apple-security120911
🔗

References & Sources

10
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://seclists.org/fulldisclosure/2024/Jul/18Mailing ListThird Party Advisory
http://seclists.org/fulldisclosure/2024/Jul/19Mailing ListThird Party Advisory
http://seclists.org/fulldisclosure/2024/Jul/20Mailing ListThird Party Advisory
http://www.openwall.com/lists/oss-security/2024/03/27/4Mailing ListThird Party Advisory
https://curl.se/docs/CVE-2024-2466.htmlVendor Advisory
https://curl.se/docs/CVE-2024-2466.jsonVendor Advisory
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