Permissions, Privileges, and Access Controls in PuTTY - CVE-2019-17068

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Main Vulnerability Database Vulnerabilities #VU21597

Permissions, Privileges, and Access Controls in PuTTY - CVE-2019-17068

Published: October 7, 2019


Vulnerability identifier: #VU21597
CSH Severity: Medium
CVSS v4: 1.8 [CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:A/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2019-17068
CWE-ID: CWE-264
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to bypass certain security restrictions.

The vulnerability exists due to an error with "bracketed paste mode" protection implementation. A remote attacker can affect current user's session with a malicious clipboard content and execute arbitrary commands on a remote system with privileges of the current user.


Affected software

PuTTY
putty (Alpine package)
SUSE Linux
Opensuse

How to mitigate CVE-2019-17068

Install updates from vendor's website.

PuTTY - update to 0.73
putty (Alpine package) - update to 0.73-r0

External References

Related Security Bulletins