CVE-2016-3739
moderate-risk
Published 2016-05-20
The (1) mbed_connect_step1 function in lib/vtls/mbedtls.c and (2) polarssl_connect_step1 function in lib/vtls/polarssl.c in cURL and libcurl before 7.49.0, when using SSLv3 or making a TLS connection to a URL that uses a numerical IP address, allow remote attackers to spoof servers via an arbitrary valid certificate.
Do I need to act?
~
1.1% chance of exploitation in next 30 days
EPSS score — moderate exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
5
CVSS 5.3/10
Medium
NETWORK
/ HIGH complexity
Affected Products (20)
Affected Vendors
References (22)
Vendor Advisory
https://curl.haxx.se/CVE-2016-3739.patch
Vendor Advisory
https://curl.haxx.se/docs/adv_20160518.html
Vendor Advisory
https://curl.haxx.se/CVE-2016-3739.patch
Vendor Advisory
https://curl.haxx.se/docs/adv_20160518.html
and 2 more references
44
/ 100
moderate-risk
Severity
17/34 · Moderate
Exploitability
3/34 · Minimal
Exposure
24/34 · High