CVE-2016-9952

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."

Category

8.1
CVSS
Severity: High
CVSS 3.1 •
CVSS 3.0 •
CVSS 2.0 •
EPSS 1.06% Top 25%
Vendor Advisory haxx.se Vendor Advisory haxx.se
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://curl.haxx.se/docs/adv_20161221B.html vendor advisory
https://curl.haxx.se/CVE-2016-9952.patch vendor advisory

Frequently Asked Questions

What is the severity of CVE-2016-9952?
CVE-2016-9952 has been scored as a high severity vulnerability.
How to fix CVE-2016-9952?
To fix CVE-2016-9952, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2016-9952 being actively exploited in the wild?
It is possible that CVE-2016-9952 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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