#VU61662 Race condition in Paramiko


Published: 2022-03-28

Vulnerability identifier: #VU61662

Vulnerability risk: Low

CVSSv3.1:

CVE-ID: CVE-2022-24302

CWE-ID: CWE-362

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Paramiko
Client/Desktop applications / Encryption software

Vendor: Jeff Forcier

Description

The vulnerability allows a local user to gain access to sensitive information.

The vulnerability exists due to a race condition in the write_private_key_file() function between creation and chmod operations. A local user can exploit the race and gain unauthorized access to sensitive information.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Paramiko: 2.0 - 2.10.0


CPE

External links
http://www.paramiko.org/changelog.html
http://github.com/paramiko/paramiko/blob/363a28d94cada17f012c1604a3c99c71a2bda003/paramiko/pkey.py#L546
http://lists.debian.org/debian-lts-announce/2022/03/msg00032.html
http://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/U63MJ2VOLLQ35R7CYNREUHSXYLWNPVSB/
http://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/LUEUEGILZ7MQXRSUF5VMMO4SWJQVPTQL/
http://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TPMKRUS4HO3P7NR7P4Y6CLHB4MBEE3AI/


Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?


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