Denial of service in tmux



Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2018-19387
CWE-ID CWE-476
Exploitation vector Local
Public exploit N/A
Vulnerable software
 tmux
Client/Desktop applications / Other client software

Vendor tmux

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) NULL pointer dereference

EUVDB-ID: #VU16007

Risk: Low

CVSSv4.0: 1.1 [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/E:U/U:Clear]

CVE-ID: CVE-2018-19387

CWE-ID: CWE-476 - NULL Pointer Dereference

Exploit availability: No

Description

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.

Mitigation

Install update from vendor's website.

Vulnerable software versions

tmux: 2.7.0 - 2.8.0

CPE2.3 External links

https://github.com/tmux/tmux/issues/1547


Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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