Vulnerability identifier: #VU33011
Vulnerability risk: Medium
CVSSv3.1: 5.2 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N/E:U/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-255
Exploitation vector: Network
Exploit availability: No
Vulnerable software:
cURL
Client/Desktop applications /
Other client software
Vendor: curl.haxx.se
Description
The vulnerability allows a remote non-authenticated attacker to manipulate data.
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.
Mitigation
Install update from vendor's website.
Vulnerable software versions
cURL: 7.1 - 7.50.3
External links
http://www.oracle.com/technetwork/security-advisory/cpuoct2018-4428296.html
http://www.securityfocus.com/bid/94094
http://www.securitytracker.com/id/1037192
http://access.redhat.com/errata/RHSA-2018:2486
http://access.redhat.com/errata/RHSA-2018:3558
http://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-8616
http://curl.haxx.se/CVE-2016-8616.patch
http://curl.haxx.se/docs/adv_20161102B.html
http://security.gentoo.org/glsa/201701-47
http://www.tenable.com/security/tns-2016-21
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.