Information disclosure in etcd

1) Information disclosure

EUVDB-ID: #VU76971

Risk: Low

CVSSv3.1: 3.8 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-32082

CWE-ID: CWE-200 - Information exposure

Exploit availability: No

Description

The vulnerability allows a remote user to gain access to potentially sensitive information.

The vulnerability exists due to excessive data output by the LeaseTimeToLive API. A remote user can gain unauthorized access to key names associated to a lease when "Keys" parameter is true.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

etcd: 3.0.0 - 3.5.8

CPE2.3

• cpe:2.3:a:etcd-io:etcd:3.5.8:*:*:*:*:*:*:*
• cpe:2.3:a:etcd-io:etcd:3.5.7:*:*:*:*:*:*:*
• cpe:2.3:a:etcd-io:etcd:3.5.6:*:*:*:*:*:*:*

External links

http://github.com/etcd-io/etcd/security/advisories/GHSA-3p4g-rcw5-8298
http://github.com/etcd-io/etcd/blob/main/CHANGELOG/CHANGELOG-3.5.md
http://github.com/etcd-io/etcd/pull/15656
http://github.com/etcd-io/etcd/blob/main/CHANGELOG/CHANGELOG-3.4.md

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user 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.