CVE-2016-3739
MEDIUMcurl < 7.49.0 - Server Spoofing via Arbitrary Valid Certificate
Title source: llmDescription
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.
References (11)
Core 11
Core References
Third Party Advisory vendor-advisory
https://security.gentoo.org/glsa/201701-47
Mailing List mailing-list
http://www.openwall.com/lists/oss-security/2024/03/27/4
Vendor Advisory
https://curl.haxx.se/CVE-2016-3739.patch
Vendor Advisory
https://curl.haxx.se/docs/adv_20160518.html
Third Party Advisory, VDB Entry vdb-entry
http://www.securitytracker.com/id/1035907
Vendor Advisory vendor-advisory
http://www.slackware.com/security/viewer.php?l=slackware-security&y=2016&m=slackware-security.495349
Third Party Advisory, VDB Entry vdb-entry
http://www.securityfocus.com/bid/90726
Vendor Advisory
https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05320149
Vendor Advisory
https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05390722
Various Sources
https://curl.haxx.se/changes.html#7_49_0
Scores
CVSS v3
5.3
EPSS
0.0107
EPSS Percentile
78.0%
Attack Vector
NETWORK
CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N
Details
CWE
CWE-20
Status
published
Products (37)
haxx/curl
7.21.0
haxx/curl
7.21.1
haxx/curl
7.21.2
haxx/curl
7.21.3
haxx/curl
7.21.4
haxx/curl
7.21.5
haxx/curl
7.21.6
haxx/curl
7.21.7
haxx/curl
7.22.0
haxx/curl
7.23.0
... and 27 more
Published
May 20, 2016
Tracked Since
Feb 18, 2026