CVE-2016-9952

HIGH

curl 7.30.0-7.51.0 - Improper Certificate Validation via Wildcard SAN in schannel TLS Backend

Title source: llm
STIX 2.1

Description

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, makes it easier for remote attackers to conduct man-in-the-middle attacks via a crafted wildcard SAN in a server certificate, as demonstrated by "*.com."

References (2)

Core 2
Core References
Vendor Advisory x_refsource_confirm
https://curl.haxx.se/docs/adv_20161221B.html
Vendor Advisory x_refsource_confirm
https://curl.haxx.se/CVE-2016-9952.patch

Scores

CVSS v3 8.1
EPSS 0.0058
EPSS Percentile 69.1%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact total

Details

CWE
CWE-295
Status published
Products (1)
haxx/curl 7.30.0 - 7.51.0
Published Mar 12, 2018
Tracked Since Feb 18, 2026