Instituto Nacional de ciberseguridad. Sección Incibe
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CVE-2022-34746

Severity CVSS v4.0:
Pending analysis
Type:
CWE-331 Insufficient Entropy
Publication date:
20/09/2022
Last modified:
22/09/2022

Description

An insufficient entropy vulnerability caused by the improper use of randomness sources with low entropy for RSA key pair generation was found in Zyxel GS1900 series firmware versions prior to V2.70. This vulnerability could allow an unauthenticated attacker to retrieve a private key by factoring the RSA modulus N in the certificate of the web administration interface.

Impact

Vector 3.x
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N CVSS v3.1 Severity and Metrics:

Base Score: 5.90 MEDIUM
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Attack Vector (AV): Network
Attack Complexity (AC): High
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): None
Availability (A): None

Base Score 3.x
5.90
Severity 3.x
MEDIUM

Vulnerable products and versions

CPE From Up to
cpe:2.3:o:zyxel:gs1900-8_firmware:*:*:*:*:*:*:*:* 2.70\(aahh.3\)c0 (excluding)
cpe:2.3:h:zyxel:gs1900-8:-:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:gs1900-8hp_firmware:*:*:*:*:*:*:*:* 2.70\(aahi.3\)c0 (excluding)
cpe:2.3:h:zyxel:gs1900-8hp:-:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:gs1900-10hp_firmware:*:*:*:*:*:*:*:* 2.70\(aazi.3\)c0 (excluding)
cpe:2.3:h:zyxel:gs1900-10hp:-:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:gs1900-16_firmware:*:*:*:*:*:*:*:* 2.70\(aahj.3\)c0 (excluding)
cpe:2.3:h:zyxel:gs1900-16:-:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:gs1900-24_firmware:*:*:*:*:*:*:*:* 2.70\(aahl.3\)c0 (excluding)
cpe:2.3:h:zyxel:gs1900-24:-:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:gs1900-24e_firmware:*:*:*:*:*:*:*:* 2.70\(aahk.3\)c0 (excluding)
cpe:2.3:h:zyxel:gs1900-24e:-:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:gs1900-24ep_firmware:*:*:*:*:*:*:*:* 2.70\(abto.3\)c0 (excluding)
cpe:2.3:h:zyxel:gs1900-24ep:-:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:gs1900-24hpv2_firmware:*:*:*:*:*:*:*:* 2.70\(abtp.3\)c0 (excluding)

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools