Missing authorization in Etcd
| Risk | High |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2021-28235 |
| CWE-ID | CWE-285 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software Subscribe |
etcd Server applications / Database software |
| Vendor | etcd-io |
Security Bulletin
This security bulletin contains one high risk vulnerability.
1) Improper Authorization
EUVDB-ID: #VU75512
Risk: High
CVSSv3.1: 8.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2021-28235
CWE-ID:
CWE-285 - Improper Authorization
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to compromise the system.
The vulnerability exists due to missing authorization to the "/debug" feature. A remote non-authenticated attacker can access the "/debug/requests" endpoint and gain unauthorized access to the application.
Install updates from vendor's website.
Vulnerable software versionsetcd: 3.4.0 - 3.5.7
External linkshttp://github.com/lucyxss/etcd-3.4.10-test/blob/master/temp4cj.png
http://github.com/lucyxss/etcd-3.4.10-test/blob/master/temp4cj_2.png
http://github.com/etcd-io/etcd/pull/15648
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.
