CVE-2016-8616

LOW

curl < 7.51.0 - Authentication Bypass via Case-Insensitive Credential Reuse

Title source: llm
STIX 2.1

Description

A flaw was found in curl before version 7.51.0 When re-using a connection, curl was doing case insensitive comparisons of user name and password with the existing connections. This means that if an unused connection with proper credentials exists for a protocol that has connection-scoped credentials, an attacker can cause that connection to be reused if s/he knows the case-insensitive version of the correct password.

References (10)

Core 10
Core References
Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/94094
Third Party Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2018:3558
Patch, Vendor Advisory x_refsource_confirm
https://curl.haxx.se/docs/adv_20161102B.html
Issue Tracking, Patch, Vendor Advisory x_refsource_confirm
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-8616
Patch, Vendor Advisory x_refsource_confirm
https://curl.haxx.se/CVE-2016-8616.patch
Third Party Advisory x_refsource_confirm
https://www.tenable.com/security/tns-2016-21
Third Party Advisory, VDB Entry vdb-entry x_refsource_sectrack
http://www.securitytracker.com/id/1037192
Third Party Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2018:2486
Third Party Advisory vendor-advisory x_refsource_gentoo
https://security.gentoo.org/glsa/201701-47

Scores

CVSS v3 3.7
EPSS 0.0419
EPSS Percentile 88.9%
Attack Vector NETWORK
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N

Details

CWE
CWE-592 CWE-255
Status published
Products (1)
haxx/curl < 7.51.0
Published Aug 01, 2018
Tracked Since Feb 18, 2026