Improper Authentication in curl (Alpine package)

Published: 2016-09-08

Risk	Medium
Patch available	YES
Number of vulnerabilities	1
CVE-ID	CVE-2016-7141
CWE-ID	CWE-287
Exploitation vector	Network
Public exploit	N/A
Vulnerable software Subscribe	curl (Alpine package) Operating systems & Components / Operating system package or component
Vendor	Alpine Linux Development Team

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Improper Authentication

EUVDB-ID: #VU32242

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2016-7141

CWE-ID: CWE-287 - Improper Authentication

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to manipulate data.

curl and libcurl before 7.50.2, when built with NSS and the libnsspem.so library is available at runtime, allow remote attackers to hijack the authentication of a TLS connection by leveraging reuse of a previously loaded client certificate from file for a connection for which no certificate has been set, a different vulnerability than CVE-2016-5420.

Mitigation

Install update from vendor's website.

Vulnerable software versions

curl (Alpine package): 7.49.1-r1

CPE2.3

cpe:2.3:o:alpine:curl_alpine_package:7.49.1-r1:*:*:*:*:alpine_linux:*:

External links

Q & A

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.