High severity · published Mar 12, 2018
CVE-2016-9952
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…
8.1
CVSS
1.3%
EPSS
No
On KEV
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."
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
High
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.3% · higher than 70% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CU
Curl · Haxx
7.30.0 through 7.51.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2016-9952
CVE.org
https://www.cve.org/CVERecord?id=CVE-2016-9952
Vendor Advisory
https://curl.haxx.se/CVE-2016-9952.patch
Vendor Advisory
https://curl.haxx.se/docs/adv_20161221B.html
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