CVE-2022-34746 Security Vulnerability & Exploit Details

CVE-2022-34746
Vulnerability Scoring

5.9

/10

Significant Risk

Security assessments indicate that CVE-2022-34746 presents a notable risk, potentially requiring prompt mitigation.

Attack Complexity Details

Attack Complexity: High
Exploits require significant effort and special conditions.
Attack Vector: Network
Vulnerability is exploitable over a network without physical access.
Privileges Required: None
No privileges are required for exploitation.
Scope: Unchanged
Exploit remains within the originally vulnerable component.
User Interaction: None
No user interaction is necessary for exploitation.

CVE-2022-34746 Details

Status: Modified

Last updated: 🕖 21 Nov 2024, 07:10 UTC
Originally published on: 🕑 20 Sep 2022, 02:15 UTC

Time between publication and last update: 793 days

CVSS Release: version 3

CVSS3 Source

security@zyxel.com.tw

CVSS3 Type

Secondary

CVSS3 Vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

CVE-2022-34746 Vulnerability Summary

CVE-2022-34746: 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.

Assessing the Risk of CVE-2022-34746

Access Complexity Graph

The exploitability of CVE-2022-34746 depends on two key factors: attack complexity (the level of effort required to execute an exploit) and privileges required (the access level an attacker needs).

Exploitability Analysis for CVE-2022-34746

CVE-2022-34746 presents a challenge to exploit due to its high attack complexity, but the absence of privilege requirements still makes it a viable target for skilled attackers. A thorough security review is advised.

Understanding AC and PR

A lower complexity and fewer privilege requirements make exploitation easier. Security teams should evaluate these aspects to determine the urgency of mitigation strategies, such as patch management and access control policies.

Attack Complexity (AC) measures the difficulty in executing an exploit. A high AC means that specific conditions must be met, making an attack more challenging, while a low AC means the vulnerability can be exploited with minimal effort.

Privileges Required (PR) determine the level of system access necessary for an attack. Vulnerabilities requiring no privileges are more accessible to attackers, whereas high privilege requirements limit exploitation to authorized users with elevated access.

CVSS Score Breakdown Chart

Above is the CVSS Sub-score Breakdown for CVE-2022-34746, illustrating how Base, Impact, and Exploitability factors combine to form the overall severity rating. A higher sub-score typically indicates a more severe or easier-to-exploit vulnerability.

CIA Impact Analysis

Below is the Impact Analysis for CVE-2022-34746, showing how Confidentiality, Integrity, and Availability might be affected if the vulnerability is exploited. Higher values usually signal greater potential damage.

Confidentiality: High
Exploiting CVE-2022-34746 can result in unauthorized access to sensitive data, severely compromising data privacy.
Integrity: None
CVE-2022-34746 poses no threat to data integrity.
Availability: None
CVE-2022-34746 does not impact system availability.

Exploit Prediction Scoring System (EPSS)

The EPSS score estimates the probability that this vulnerability will be exploited in the near future.

EPSS Score: 0.11% (probability of exploit)

EPSS Percentile: 45.82% (lower percentile = lower relative risk)
This vulnerability is less risky than approximately 54.18% of others.

CVE-2022-34746 References

External References

CWE Common Weakness Enumeration

CWE-331

CAPEC Common Attack Pattern Enumeration and Classification

Session Credential Falsification through Prediction CAPEC-59 This attack targets predictable session ID in order to gain privileges. The attacker can predict the session ID used during a transaction to perform spoofing and session hijacking.

Vulnerable Configurations

cpe:2.3:o:zyxel:gs1900-8_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:gs1900-8_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:gs1900-8_firmware:2.40:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:gs1900-8_firmware:2.40:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:gs1900-8_firmware:2.50\(aaho.0\)c0:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:gs1900-8_firmware:2.50\(aaho.0\)c0:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:gs1900-8_firmware:2.70:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:gs1900-8_firmware:2.70:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:gs1900-8_firmware:2.70\(aahh.0\)-20211208:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:gs1900-8_firmware:2.70\(aahh.0\)-20211208:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:gs1900-8_firmware:2.70\(aahh.3\):*:*:*:*:*:*:*
cpe:2.3:o:zyxel:gs1900-8_firmware:2.70\(aahh.3\):*:*:*:*:*:*:*
cpe:2.3:h:zyxel:gs1900-8:-:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:gs1900-8:-:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:gs1900-8hp_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:gs1900-8hp_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:gs1900-8hp_firmware:2.40:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:gs1900-8hp_firmware:2.40:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:gs1900-8hp_firmware:2.50\(aahi.0\)c0:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:gs1900-8hp_firmware:2.50\(aahi.0\)c0:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:gs1900-8hp_firmware:2.70:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:gs1900-8hp_firmware:2.70:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:gs1900-8hp_firmware:2.70\(aahi.0\)-20211208:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:gs1900-8hp_firmware:2.70\(aahi.0\)-20211208:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:gs1900-8hp_firmware:2.70\(aahi.3\):*:*:*:*:*:*:*
cpe:2.3:o:zyxel:gs1900-8hp_firmware:2.70\(aahi.3\):*:*:*:*:*:*:*
cpe:2.3:h:zyxel:gs1900-8hp:-:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:gs1900-8hp:-:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:gs1900-10hp_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:gs1900-10hp_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:gs1900-10hp_firmware:2.40:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:gs1900-10hp_firmware:2.40:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:gs1900-10hp_firmware:2.50\(aazi.0\)c0:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:gs1900-10hp_firmware:2.50\(aazi.0\)c0:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:gs1900-10hp_firmware:2.70:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:gs1900-10hp_firmware:2.70:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:gs1900-10hp_firmware:2.70\(aazi.0\)-20211208:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:gs1900-10hp_firmware:2.70\(aazi.0\)-20211208:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:gs1900-10hp_firmware:2.70\(aazi.3\):*:*:*:*:*:*:*
cpe:2.3:o:zyxel:gs1900-10hp_firmware:2.70\(aazi.3\):*:*:*:*:*:*:*
cpe:2.3:h:zyxel:gs1900-10hp:-:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:gs1900-10hp:-:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:gs1900-16_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:gs1900-16_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:gs1900-16_firmware:2.40:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:gs1900-16_firmware:2.40:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:gs1900-16_firmware:2.50\(aahj.0\)c0:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:gs1900-16_firmware:2.50\(aahj.0\)c0:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:gs1900-16_firmware:2.70:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:gs1900-16_firmware:2.70:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:gs1900-16_firmware:2.70\(aahj.0\)-20211208:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:gs1900-16_firmware:2.70\(aahj.0\)-20211208:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:gs1900-16_firmware:2.70\(aahj.3\):*:*:*:*:*:*:*
cpe:2.3:o:zyxel:gs1900-16_firmware:2.70\(aahj.3\):*:*:*:*:*:*:*
cpe:2.3:h:zyxel:gs1900-16:-:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:gs1900-16:-:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:gs1900-24_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:gs1900-24_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:gs1900-24_firmware:2.40:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:gs1900-24_firmware:2.40:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:gs1900-24_firmware:2.50\(aahl.0\)c0:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:gs1900-24_firmware:2.50\(aahl.0\)c0:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:gs1900-24_firmware:2.70:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:gs1900-24_firmware:2.70:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:gs1900-24_firmware:2.70\(aahl.0\)-20211208:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:gs1900-24_firmware:2.70\(aahl.0\)-20211208:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:gs1900-24_firmware:2.70\(aahl.3\):*:*:*:*:*:*:*
cpe:2.3:o:zyxel:gs1900-24_firmware:2.70\(aahl.3\):*:*:*:*:*:*:*
cpe:2.3:h:zyxel:gs1900-24:-:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:gs1900-24:-:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:gs1900-24e_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:gs1900-24e_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:gs1900-24e_firmware:2.40:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:gs1900-24e_firmware:2.40:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:gs1900-24e_firmware:2.50\(aahk.0\)c0:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:gs1900-24e_firmware:2.50\(aahk.0\)c0:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:gs1900-24e_firmware:2.70:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:gs1900-24e_firmware:2.70:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:gs1900-24e_firmware:2.70\(aahk.0\)-20211208:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:gs1900-24e_firmware:2.70\(aahk.0\)-20211208:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:gs1900-24e_firmware:2.70\(aahk.3\):*:*:*:*:*:*:*
cpe:2.3:o:zyxel:gs1900-24e_firmware:2.70\(aahk.3\):*:*:*:*:*:*:*
cpe:2.3:h:zyxel:gs1900-24e:-:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:gs1900-24e:-:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:gs1900-24ep_firmware:2.70:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:gs1900-24ep_firmware:2.70:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:gs1900-24ep_firmware:2.70\(abto.0\)-20211208:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:gs1900-24ep_firmware:2.70\(abto.0\)-20211208:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:gs1900-24ep_firmware:2.70\(abto.3\):*:*:*:*:*:*:*
cpe:2.3:o:zyxel:gs1900-24ep_firmware:2.70\(abto.3\):*:*:*:*:*:*:*
cpe:2.3:h:zyxel:gs1900-24ep:-:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:gs1900-24ep:-:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:gs1900-24hpv2_firmware:2.70:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:gs1900-24hpv2_firmware:2.70:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:gs1900-24hpv2_firmware:2.70\(aatp.0\)-20211208:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:gs1900-24hpv2_firmware:2.70\(aatp.0\)-20211208:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:gs1900-24hpv2_firmware:2.70\(abtp.3\):*:*:*:*:*:*:*
cpe:2.3:o:zyxel:gs1900-24hpv2_firmware:2.70\(abtp.3\):*:*:*:*:*:*:*
cpe:2.3:h:zyxel:gs1900-24hpv2:-:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:gs1900-24hpv2:-:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:gs1900-48_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:gs1900-48_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:gs1900-48_firmware:2.40:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:gs1900-48_firmware:2.40:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:gs1900-48_firmware:2.50\(aahn.0\)c0:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:gs1900-48_firmware:2.50\(aahn.0\)c0:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:gs1900-48_firmware:2.70:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:gs1900-48_firmware:2.70:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:gs1900-48_firmware:2.70\(aahn.0\)-20211208:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:gs1900-48_firmware:2.70\(aahn.0\)-20211208:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:gs1900-48_firmware:2.70\(aahn.3\):*:*:*:*:*:*:*
cpe:2.3:o:zyxel:gs1900-48_firmware:2.70\(aahn.3\):*:*:*:*:*:*:*
cpe:2.3:h:zyxel:gs1900-48:-:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:gs1900-48:-:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:gs1900-48hpv2_firmware:2.70:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:gs1900-48hpv2_firmware:2.70:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:gs1900-48hpv2_firmware:2.70\(abtq.0\)-20211208:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:gs1900-48hpv2_firmware:2.70\(abtq.0\)-20211208:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:gs1900-48hpv2_firmware:2.70\(abtq.3\):*:*:*:*:*:*:*
cpe:2.3:o:zyxel:gs1900-48hpv2_firmware:2.70\(abtq.3\):*:*:*:*:*:*:*
cpe:2.3:h:zyxel:gs1900-48hpv2:-:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:gs1900-48hpv2:-:*:*:*:*:*:*:*

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CVE-2022-34746 Vulnerability Scoring