Multiple vulnerabilities in CoreOS etcd

Published: 2018-02-25

Risk	Low
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2018-1098 CVE-2018-1099
CWE-ID	CWE-352 CWE-20
Exploitation vector	Network
Public exploit	N/A
Vulnerable software Subscribe	etcd Server applications / Database software
Vendor	CoreOS

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Cross-site request forgery

EUVDB-ID: #VU11632

Risk: Low

CVSSv3.1: 7.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-1098

CWE-ID: CWE-352 - Cross-Site Request Forgery (CSRF)

Exploit availability: No

Description

The vulnerability allows a remote unauthenticated attacker to conduct cross-site request forgery attack and gain elevated privileges on the target system.

The weakness exists due to improper validation of HTTP POST requests. A remote attacker can trick the victim into visiting a specially crafted website and gain privileges of the target user.

Mitigation

Update to version 3.3.2 or later.

Vulnerable software versions

etcd: 2.3.8 - 3.3.1

External links

http://github.com/coreos/etcd/issues/9353

Q & A

Can this vulnerability be exploited remotely?

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

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

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

2) Improper input validation

EUVDB-ID: #VU11633