Risk | Medium |
Patch available | YES |
Number of vulnerabilities | 1 |
CVE-ID | CVE-2020-14367 |
CWE-ID | CWE-59 |
Exploitation vector | Network |
Public exploit | N/A |
Vulnerable software Subscribe |
chrony Other software / Other software solutions |
Vendor | mlichvar |
Security Bulletin
This security bulletin contains one medium risk vulnerability.
EUVDB-ID: #VU46134
Risk: Medium
CVSSv3.1: 5.5 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:U/RL:O/RC:C]
CVE-ID: CVE-2020-14367
CWE-ID:
CWE-59 - Improper Link Resolution Before File Access ('Link Following')
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to compromise the target system.
The vulnerability exists due to a symlink following issue when creating the PID file under the "/var/run/chrony" folder. A remote authenticated attacker can create a symlink with the default PID file name pointing to any destination file in the system, resulting in data loss and a denial of service (DoS).
MitigationInstall updates from vendor's website.
Vulnerable software versionschrony: 1.0 - 3.5
External linkshttp://bugzilla.redhat.com/show_bug.cgi?id=1870298
http://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/6WKABKNLCSC3MACCWU6OM2YGWVWFWFMU/
http://security.gentoo.org/glsa/202008-23
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.