Arbitrary code execution in curl (Alpine package)

Published: 2016-09-15

Risk	High
Patch available	YES
Number of vulnerabilities	1
CVE-ID	CVE-2016-7167
CWE-ID	CWE-191
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 high risk vulnerability.

1) Arbitrary code execution

EUVDB-ID: #VU655

Risk: High

CVSSv3.1: 8.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2016-7167

CWE-ID: CWE-191 - Integer underflow

Exploit availability: No

Description

The vulnerability exposes a remote user's possibility to cause arbitrary code execution on the target system.
The weakness exists due to integer overflow. Using of specially crafted length parameter value to certain libcurl functions allows attackers to obtain potentially sensitive information and execute arbitrary code.
Successful exploitation of the vulnerability may result in arbitrary code execution on the vulnerable system.

Mitigation

Install update from vendor's website.

Vulnerable software versions

curl (Alpine package): 7.49.1-r2

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.