NULL pointer dereference in tmux - CVE-2018-19387
Published: November 21, 2018
Vulnerability identifier: #VU16007
CSH Severity: Low
CVSS v4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2018-19387
CWE-ID: CWE-476
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local attacker to cause DoS condition on the target system.
The vulnerability exists due to an error in the format_cb_pane_tabs function, as defined in the format.csource code file. A local attacker can access a targeted system, execute an application that submits malicious input, trigger a NULL pointer dereference condition and cause the application to crash.
Affected software
tmux
Fedora
tmux
Fedora
tmux
How to mitigate CVE-2018-19387
Install update from vendor's website.
tmux - addressed in versions 2.8-2.fc27, 2.8-2.fc28, 2.8-2.fc29