Improper input validation in ncurses - CVE-2017-13731

Vulnerability identifier: #VU12198

CSH Severity: Low

CVSS v4: 6.9 [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]

CVE-ID: CVE-2017-13731

CWE-ID: CWE-20

Exploitation vector: Remote access

Exploit availability: No public exploit available

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

The weakness exists in the function postprocess_termcap() in parse_entry.c due to an illegal address access. A remote attacker can cause the service to crash.

ncurses
VMware Tanzu Application Service for VMs
Isolation Segment
Gentoo Linux
SUSE Linux
Ubuntu
Tanzu Greenplum for Kubernetes
ncurses (Alpine package)
libncurses5 (Ubuntu package)
ncurses-term (Ubuntu package)
libx32tinfo5 (Ubuntu package)
libx32ncursesw5 (Ubuntu package)
ncurses-base (Ubuntu package)
libncursesw5 (Ubuntu package)
lib64ncurses5 (Ubuntu package)
ncurses-bin (Ubuntu package)
lib32ncurses5 (Ubuntu package)
lib64tinfo5 (Ubuntu package)
libtinfo5 (Ubuntu package)
lib32tinfo5 (Ubuntu package)
lib32ncursesw5 (Ubuntu package)
libx32ncurses5 (Ubuntu package)
VMware Tanzu Operations Manager

Update to version 6.1.

Tanzu Greenplum for Kubernetes - update to 2.0.0
ncurses (Alpine package) - update to 6.0_p20170701-r0
VMware Tanzu Operations Manager - addressed in versions 2.9.39, 2.10.40
libncurses5 (Ubuntu package) - update to 6.0+201602131ubuntu1+esm1
ncurses-term (Ubuntu package) - update to 6.0+201602131ubuntu1+esm1
libx32tinfo5 (Ubuntu package) - update to 6.0+201602131ubuntu1+esm1
libx32ncursesw5 (Ubuntu package) - update to 6.0+201602131ubuntu1+esm1
ncurses-base (Ubuntu package) - update to 6.0+201602131ubuntu1+esm1
libncursesw5 (Ubuntu package) - update to 6.0+201602131ubuntu1+esm1
lib64ncurses5 (Ubuntu package) - update to 6.0+201602131ubuntu1+esm1
ncurses-bin (Ubuntu package) - update to 6.0+201602131ubuntu1+esm1
lib32ncurses5 (Ubuntu package) - update to 6.0+201602131ubuntu1+esm1
lib64tinfo5 (Ubuntu package) - update to 6.0+201602131ubuntu1+esm1
libtinfo5 (Ubuntu package) - update to 6.0+201602131ubuntu1+esm1
lib32tinfo5 (Ubuntu package) - update to 6.0+201602131ubuntu1+esm1
lib32ncursesw5 (Ubuntu package) - update to 6.0+201602131ubuntu1+esm1
libx32ncurses5 (Ubuntu package) - update to 6.0+201602131ubuntu1+esm1

• https://bugzilla.redhat.com/show_bug.cgi?id=1484285

• Gentoo update for ncurses
• SUSE Linux update for ncurses
• Improper input validation in ncurses (Alpine package)
• Ubuntu update for ncurses
• VMware Tanzu products update for ncurses