Privilege escalation in yum-utils

1) Path traversal

EUVDB-ID: #VU14218

Risk: Low

CVSSv3.1: 9 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:U/RC:C]

CVE-ID: CVE-2018-10897

CWE-ID: CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain elevated privileges on the target system.

The vulnerability exists in reposync, a part of yum-utils due to insufficient sanitization of paths in remote repository configuration files. A remote unauthenticated attacker can conduct directory traversal attack, copy files outside of the destination directory and gain elevated privileges to conduct further attacks.

Mitigation

Cybersecurity Help is currently unaware of any solutions addressing the vulnerability.

Vulnerable software versions

yum-utils: 0.2 - 1.1.31

External links

http://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-10897

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

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