Fedora 29 update for kernel, kernel-headers, kernel-tools

Published: 2018-09-26 | Updated: 2025-04-24

Risk	Medium
Patch available	YES
Number of vulnerabilities	1
CVE-ID	CVE-2018-14633
CWE-ID	CWE-121
Exploitation vector	Network
Public exploit	N/A
Vulnerable software	Fedora Operating systems & Components / Operating system kernel-tools Operating systems & Components / Operating system package or component kernel-headers Operating systems & Components / Operating system package or component kernel Operating systems & Components / Operating system package or component
Vendor	Fedoraproject

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Stack-based buffer overflow

EUVDB-ID: #VU14920

Risk: Medium

CVSSv4.0: 7.2 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2018-14633

CWE-ID: CWE-121 - Stack-based buffer overflow

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error when processing client digest packets in chap_server_compute_md5() function when processing authentication request from an ISCSI initiator. A remote attacker can send an overly long value (longer than 32 bytes), trigger stack-based buffer overflow and execute arbitrary code on the target system.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

Fedora: 29

kernel-tools: before 4.18.10-300.fc29

kernel-headers: before 4.18.10-300.fc29

kernel: before 4.18.10-300.fc29

CPE2.3

External links

https://bodhi.fedoraproject.org/updates/FEDORA-2018-5453baa4af

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.