Risk | Medium |
Patch available | YES |
Number of vulnerabilities | 6 |
CVE-ID | CVE-2020-15115 CVE-2020-15106 CVE-2020-15113 CVE-2020-15112 CVE-2020-15114 CVE-2020-15136 |
CWE-ID | CWE-521 CWE-399 CWE-281 CWE-400 CWE-287 |
Exploitation vector | Network |
Public exploit | N/A |
Vulnerable software |
etcd Server applications / Database software |
Vendor | CoreOS |
Security Bulletin
This security bulletin contains information about 6 vulnerabilities.
Updated: 11.08.2020
Added vulnerability #6.
EUVDB-ID: #VU41617
Risk: Medium
CVSSv4.0: 1.7 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]
CVE-ID: CVE-2020-15115
CWE-ID:
CWE-521 - Weak Password Requirements
Exploit availability: No
DescriptionThe vulnerability allows an attacker to perform brute-force attack and guess the password.
The vulnerability exists due to weak password requirements in etcd. An attacker can perform a brute-force attack and guess users' passwords.
MitigationInstall updates from vendor's website.
Vulnerable software versionsetcd: 3.3.0 - 3.4.9
CPE2.3http://github.com/etcd-io/etcd/security/advisories/GHSA-4993-m7g5-r9hh
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.
EUVDB-ID: #VU41650
Risk: Medium
CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]
CVE-ID: CVE-2020-15106
CWE-ID:
CWE-399 - Resource Management Errors
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to improper management of internal resources with the application, as a large slice causes panic in decodeRecord method. A remote attacker can forge an extremely large frame size that can unintentionally panic at the expense of any RAFT participant trying to decode the WAL.
MitigationInstall updates from vendor's website.
Vulnerable software versionsetcd: 3.3.0 - 3.4.9
CPE2.3http://github.com/etcd-io/etcd/security/advisories/GHSA-p4g4-wgrh-qrg2
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.
EUVDB-ID: #VU41647
Risk: Low
CVSSv4.0: 0.4 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]
CVE-ID: CVE-2020-15113
CWE-ID:
CWE-281 - Improper preservation of permissions
Exploit availability: No
DescriptionThe vulnerability allows a local user to gain access to sensitive information.
The vulnerability exists due to software improperly sets permissions to certain directory paths in case they were previously created (etcd data directory and the directory path when provided to automatically generate self-signed certificates for TLS connections with clients). A local user can gain unauthorized access to sensitive information on the system.
Install updates from vendor's website.
Vulnerable software versionsetcd: 3.3.0 - 3.4.9
CPE2.3http://github.com/etcd-io/etcd/security/advisories/GHSA-chh6-ppwq-jh92
Q & A
Can this vulnerability be exploited remotely?
No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.
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.
The attacker would have to login to the system and perform certain actions in order to exploit this vulnerability.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
EUVDB-ID: #VU41624
Risk: Medium
CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]
CVE-ID: CVE-2020-15112
CWE-ID:
CWE-399 - Resource Management Errors
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to improper management of internal resources with the application, as it is possible to have an entry index greater then the number of entries in the ReadAll method in wal/wal.go. This could cause issues when WAL entries are being read during consensus as an arbitrary etcd consensus participant could go down from a runtime panic when reading the entry.
MitigationInstall updates from vendor's website.
Vulnerable software versionsetcd: 3.3.0 - 3.4.9
CPE2.3http://github.com/etcd-io/etcd/security/advisories/GHSA-m332-53r6-2w93
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.
EUVDB-ID: #VU41615
Risk: Medium
CVSSv4.0: 5.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H/E:U/U:Green]
CVE-ID: CVE-2020-15114
CWE-ID:
CWE-400 - Resource exhaustion
Exploit availability: No
DescriptionThe vulnerability allows a remote user to perform a denial of service (DoS) attack.
The vulnerability exists due to application does not properly control consumption of internal resources. A remote authenticated user can include the gateway address as an endpoint, trigger resource exhaustion and perform a denial of service (DoS) attack.
MitigationInstall updates from vendor's website.
Vulnerable software versionsetcd: 3.3.0 - 3.4.9
CPE2.3http://github.com/etcd-io/etcd/security/advisories/GHSA-2xhq-gv6c-p224
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.
EUVDB-ID: #VU42731
Risk: Medium
CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]
CVE-ID: CVE-2020-15136
CWE-ID:
CWE-287 - Improper Authentication
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to bypass authentication process.
The vulnerability exists due to gateway TLS authentication is only applied to endpoints detected in DNS SRV records. When starting a gateway, TLS authentication will only be attempted on endpoints identified in DNS SRV records for a given domain, which occurs in the discoverEndpoints function. No authentication is performed against endpoints provided in the --endpoints flag.
MitigationInstall updates from vendor's website.
Vulnerable software versionsetcd: 3.3.0 - 3.4.9
CPE2.3http://github.com/etcd-io/etcd/blob/master/Documentation/op-guide/gateway.md
http://github.com/etcd-io/etcd/security/advisories/GHSA-wr2v-9rpq-c35q
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.