Stack-based buffer overflow in ncurses (Alpine package)

Published: 2017-07-19

Risk	High
Patch available	YES
Number of vulnerabilities	1
CVE-ID	CVE-2017-10684
CWE-ID	CWE-121
Exploitation vector	Network
Public exploit	N/A
Vulnerable software Subscribe	ncurses (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) Stack-based buffer overflow

EUVDB-ID: #VU12110

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-2017-10684

CWE-ID: CWE-121 - Stack-based buffer overflow

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists in the fmt_entry function of ncurses due to stack-based buffer overflow when handling malicious input. A remote unauthenticated attacker can send a request that submits malicious input, trigger memory corruption and execute arbitrary code with elevated privileges.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Install update from vendor's website.

Vulnerable software versions

ncurses (Alpine package): 6.0-r6 - 6.0-r7

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.