Fedora 33 update for createrepo_c, dnf-plugins-core, dnf-plugins-extras, librepo, livecd-tools

1) Path traversal

EUVDB-ID: #VU47485

Risk: Medium

CVSSv4.0: 4.8 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2020-14352

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 perform directory traversal attacks.

The vulnerability exists due to input validation error when processing directory traversal sequences in remote repository metadata. A remote attacker with control over the repository can trick the victim into downloading software and copy files outside of the destination directory on the targeted system. Successful exploitation of the vulnerability may result in system compromise.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

Fedora: 33

livecd-tools: before 27.1-8.fc33

librepo: before 1.12.1-1.fc33

dnf-plugins-extras: before 4.0.12-1.fc33

dnf-plugins-core: before 4.0.18-1.fc33

createrepo_c: before 0.16.1-1.fc33

CPE2.3

• cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
• cpe:2.3:a:fedoraproject:livecd-tools:*:*:*:*:*:fedora:*:*
• cpe:2.3:a:fedoraproject:librepo:*:*:*:*:*:fedora:*:*
• cpe:2.3:a:fedoraproject:dnf-plugins-extras:*:*:*:*:*:fedora:*:*
• cpe:2.3:a:fedoraproject:dnf-plugins-core:*:*:*:*:*:fedora:*:*
• cpe:2.3:a:fedoraproject:createrepo_c:*:*:*:*:*:fedora:*:*

External links

https://bodhi.fedoraproject.org/updates/FEDORA-2020-b40fc174b5

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.