Home/CVE/The verify_certificate function in lib/vtls/schannel.c in libcurl 7.30.0 through 7.51.0, when built for Windows CE using
CVE

CVE-2016-9953

The verify_certificate function in lib/vtls/schannel.c in libcurl 7.30.0 through 7.51.0, when built for Windows CE using

The verify_certificate function in lib/vtls/schannel.c in libcurl 7.30.0 through 7.51.0, when built for Windows CE using the schannel TLS backend, allows remote attackers to obtain sensitive information, cause a denial of service (crash), or possibly have unspecified other impact via a wildcard certificate name, which triggers an out-of-bounds read.

CRITICAL · CVSS 9.8 EPSS 0.00557
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules7 YARA rules0
⬡

Weakness Classification

CWE-125Out-of-bounds Read
▤

Affected Products & Versions

1
haxx curl>= 7.30.0 and <= 7.51.0
◈

Sigma Hunt Rules

7
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

9.8
CRITICAL · CVSS v3.0 · cve@mitre.org
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 NVD12 Mar 2018 · 09:29 PM
CVSS VectorCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
⚑

Vendor Advisories

1
cisa-csafcisa-csaf-csaf_files-OT-white-2019-icsa-19-155-01
🔗

References & Sources

2
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://curl.haxx.se/CVE-2016-9952.patchVendor Advisory
https://curl.haxx.se/docs/adv_20161221C.htmlVendor Advisory
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