#VU67632 Insufficient Entropy in ZyXEL Communications Corp. products - CVE-2022-34746
Vulnerability identifier: #VU67632
Vulnerability risk: Medium
CVSSv4.0: 4.6 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]
CVE-ID:
CWE-ID:
CWE-331
Exploitation vector: Network
Exploit availability: No
Vulnerable software:
GS1900-8
Hardware solutions /
Routers & switches, VoIP, GSM, etc
GS1900-8HP
Hardware solutions /
Routers & switches, VoIP, GSM, etc
GS1900-10HP
Hardware solutions /
Routers & switches, VoIP, GSM, etc
GS1900-16
Hardware solutions /
Routers & switches, VoIP, GSM, etc
GS1900-24
Hardware solutions /
Routers & switches, VoIP, GSM, etc
GS1900-24E
Hardware solutions /
Routers & switches, VoIP, GSM, etc
GS1900-24EP
Hardware solutions /
Routers & switches, VoIP, GSM, etc
GS1900-24HPv2
Hardware solutions /
Routers & switches, VoIP, GSM, etc
GS1900-48
Hardware solutions /
Routers & switches, VoIP, GSM, etc
GS1900-48HPv2
Hardware solutions /
Routers & switches, VoIP, GSM, etc
Vendor: ZyXEL Communications Corp.
Description
The vulnerability allows a remote attacker to gain access to sensitive information on the system.
The vulnerability exists due to improper use of randomness sources with low entropy for RSA key pair generation. A remote attacker can retrieve a private key.
Mitigation
Install updates from vendor's website.
Vulnerable software versions
GS1900-8: 2.60(AAHH.4)C0
GS1900-8HP: 2.60(AAHI.4)C0
GS1900-10HP: 2.60(AAZI.4)C0
GS1900-16: 2.60(AAHJ.4)C0
GS1900-24: 2.60(AAHL.4)C0
GS1900-24E: 2.60(AAHK.4)C0
GS1900-24EP: 2.60(ABTO.4)C0
GS1900-24HPv2: 2.60(ABTP.4)C0
GS1900-48: 2.60(AAHN.4)C0
GS1900-48HPv2: 2.60(ABTQ.4)C0
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
