#VU12191 Improper input validation in ncurses - CVE-2017-11112

Vulnerability identifier: #VU12191

Vulnerability risk: Low

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2017-11112

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
ncurses
Universal components / Libraries / Libraries used by multiple products

Vendor: Free Software Foundation

Description
The vulnerability allows a remote attacker to cause DoS condition on the target system.

The weakness exists in the append_acs function of tinfo/parse_entry.c due to an attempted 0xffffffffffffffff access. A remote attacker can cause the service to crash if the terminfo library code is used to process untrusted terminfo data.

Mitigation
Update to version 6.1.

Vulnerable software versions

ncurses: 6.0

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External links
https://bugzilla.redhat.com/show_bug.cgi?id=1464686

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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.