CVE-2021-42017 Vulnerability Analysis & Exploit Details

CVE-2021-42017
Vulnerability Scoring

5.9
/10
Significant Risk

Security assessments indicate that CVE-2021-42017 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-2021-42017 Details

Status: Modified

Last updated: 🕕 21 Nov 2024, 06:27 UTC
Originally published on: 🕛 08 Mar 2022, 12:15 UTC

Time between publication and last update: 988 days

CVSS Release: version 3

CVSS3 Source

productcert@siemens.com

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-2021-42017 Vulnerability Summary

CVE-2021-42017: A vulnerability has been identified in RUGGEDCOM i800, RUGGEDCOM i801, RUGGEDCOM i802, RUGGEDCOM i803, RUGGEDCOM M2100, RUGGEDCOM M2100F, RUGGEDCOM M2200, RUGGEDCOM M2200F, RUGGEDCOM M969, RUGGEDCOM M969F, RUGGEDCOM RMC30, RUGGEDCOM RMC8388 V4.X, RUGGEDCOM RMC8388 V5.X, RUGGEDCOM RP110, RUGGEDCOM RS1600, RUGGEDCOM RS1600F, RUGGEDCOM RS1600T, RUGGEDCOM RS400, RUGGEDCOM RS400F, RUGGEDCOM RS401, RUGGEDCOM RS416, RUGGEDCOM RS416F, RUGGEDCOM RS416P, RUGGEDCOM RS416PF, RUGGEDCOM RS416Pv2 V4.X, RUGGEDCOM RS416Pv2 V5.X, RUGGEDCOM RS416v2 V4.X, RUGGEDCOM RS416v2 V5.X, RUGGEDCOM RS8000, RUGGEDCOM RS8000A, RUGGEDCOM RS8000H, RUGGEDCOM RS8000T, RUGGEDCOM RS900, RUGGEDCOM RS900 (32M) V4.X, RUGGEDCOM RS900 (32M) V5.X, RUGGEDCOM RS900F, RUGGEDCOM RS900G, RUGGEDCOM RS900G (32M) V4.X, RUGGEDCOM RS900G (32M) V5.X, RUGGEDCOM RS900GF, RUGGEDCOM RS900GP, RUGGEDCOM RS900GPF, RUGGEDCOM RS900L, RUGGEDCOM RS900M-GETS-C01, RUGGEDCOM RS900M-GETS-XX, RUGGEDCOM RS900M-STND-C01, RUGGEDCOM RS900M-STND-XX, RUGGEDCOM RS900W, RUGGEDCOM RS910, RUGGEDCOM RS910L, RUGGEDCOM RS910W, RUGGEDCOM RS920L, RUGGEDCOM RS920W, RUGGEDCOM RS930L, RUGGEDCOM RS930W, RUGGEDCOM RS940G, RUGGEDCOM RS940GF, RUGGEDCOM RS969, RUGGEDCOM RSG2100, RUGGEDCOM RSG2100 (32M) V4.X, RUGGEDCOM RSG2100 (32M) V5.X, RUGGEDCOM RSG2100F, RUGGEDCOM RSG2100P, RUGGEDCOM RSG2100PF, RUGGEDCOM RSG2200, RUGGEDCOM RSG2200F, RUGGEDCOM RSG2288 V4.X, RUGGEDCOM RSG2288 V5.X, RUGGEDCOM RSG2300 V4.X, RUGGEDCOM RSG2300 V5.X, RUGGEDCOM RSG2300F, RUGGEDCOM RSG2300P V4.X, RUGGEDCOM RSG2300P V5.X, RUGGEDCOM RSG2300PF, RUGGEDCOM RSG2488 V4.X, RUGGEDCOM RSG2488 V5.X, RUGGEDCOM RSG2488F, RUGGEDCOM RSG907R, RUGGEDCOM RSG908C, RUGGEDCOM RSG909R, RUGGEDCOM RSG910C, RUGGEDCOM RSG920P V4.X, RUGGEDCOM RSG920P V5.X, RUGGEDCOM RSL910, RUGGEDCOM RST2228, RUGGEDCOM RST2228P, RUGGEDCOM RST916C, RUGGEDCOM RST916P. A new variant of the POODLE attack has left a third-party component vulnerable due to the implementation flaws of the CBC encryption mode in TLS 1.0 to 1.2. If an attacker were to exploit this, they could act as a man-in-the-middle and eavesdrop on encrypted communications.

Assessing the Risk of CVE-2021-42017

Access Complexity Graph

The exploitability of CVE-2021-42017 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-2021-42017

CVE-2021-42017 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-2021-42017, 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-2021-42017, 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-2021-42017 can result in unauthorized access to sensitive data, severely compromising data privacy.
  • Integrity: None
    CVE-2021-42017 poses no threat to data integrity.
  • Availability: None
    CVE-2021-42017 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: 0.044% (probability of exploit)

EPSS Percentile: 15.33% (lower percentile = lower relative risk)
This vulnerability is less risky than approximately 84.67% of others.

CVE-2021-42017 References

External References

CWE Common Weakness Enumeration

CWE-295

CAPEC Common Attack Pattern Enumeration and Classification

  • Creating a Rogue Certification Authority Certificate CAPEC-459 An adversary exploits a weakness resulting from using a hashing algorithm with weak collision resistance to generate certificate signing requests (CSR) that contain collision blocks in their "to be signed" parts. The adversary submits one CSR to be signed by a trusted certificate authority then uses the signed blob to make a second certificate appear signed by said certificate authority. Due to the hash collision, both certificates, though different, hash to the same value and so the signed blob works just as well in the second certificate. The net effect is that the adversary's second X.509 certificate, which the Certification Authority has never seen, is now signed and validated by that Certification Authority.
  • Signature Spoofing by Improper Validation CAPEC-475 An adversary exploits a cryptographic weakness in the signature verification algorithm implementation to generate a valid signature without knowing the key.

Vulnerable Configurations

  • cpe:2.3:o:siemens:ruggedcom_ros:*:*:*:*:*:*:*:*
    cpe:2.3:o:siemens:ruggedcom_ros:*:*:*:*:*:*:*:*
  • cpe:2.3:h:siemens:ruggedcom_i800:-:*:*:*:*:*:*:*
    cpe:2.3:h:siemens:ruggedcom_i800:-:*:*:*:*:*:*:*
  • cpe:2.3:h:siemens:ruggedcom_i801:-:*:*:*:*:*:*:*
    cpe:2.3:h:siemens:ruggedcom_i801:-:*:*:*:*:*:*:*
  • cpe:2.3:h:siemens:ruggedcom_i802:-:*:*:*:*:*:*:*
    cpe:2.3:h:siemens:ruggedcom_i802:-:*:*:*:*:*:*:*
  • cpe:2.3:h:siemens:ruggedcom_i803:-:*:*:*:*:*:*:*
    cpe:2.3:h:siemens:ruggedcom_i803:-:*:*:*:*:*:*:*
  • cpe:2.3:h:siemens:ruggedcom_m2100:-:*:*:*:*:*:*:*
    cpe:2.3:h:siemens:ruggedcom_m2100:-:*:*:*:*:*:*:*
  • cpe:2.3:h:siemens:ruggedcom_m2200:-:*:*:*:*:*:*:*
    cpe:2.3:h:siemens:ruggedcom_m2200:-:*:*:*:*:*:*:*
  • cpe:2.3:h:siemens:ruggedcom_m969:-:*:*:*:*:*:*:*
    cpe:2.3:h:siemens:ruggedcom_m969:-:*:*:*:*:*:*:*
  • cpe:2.3:h:siemens:ruggedcom_rmc:-:*:*:*:*:*:*:*
    cpe:2.3:h:siemens:ruggedcom_rmc:-:*:*:*:*:*:*:*
  • cpe:2.3:h:siemens:ruggedcom_rmc20:-:*:*:*:*:*:*:*
    cpe:2.3:h:siemens:ruggedcom_rmc20:-:*:*:*:*:*:*:*
  • cpe:2.3:h:siemens:ruggedcom_rmc30:-:*:*:*:*:*:*:*
    cpe:2.3:h:siemens:ruggedcom_rmc30:-:*:*:*:*:*:*:*
  • cpe:2.3:h:siemens:ruggedcom_rmc40:-:*:*:*:*:*:*:*
    cpe:2.3:h:siemens:ruggedcom_rmc40:-:*:*:*:*:*:*:*
  • cpe:2.3:h:siemens:ruggedcom_rmc41:-:*:*:*:*:*:*:*
    cpe:2.3:h:siemens:ruggedcom_rmc41:-:*:*:*:*:*:*:*
  • cpe:2.3:h:siemens:ruggedcom_rp110:-:*:*:*:*:*:*:*
    cpe:2.3:h:siemens:ruggedcom_rp110:-:*:*:*:*:*:*:*
  • cpe:2.3:h:siemens:ruggedcom_rs400:-:*:*:*:*:*:*:*
    cpe:2.3:h:siemens:ruggedcom_rs400:-:*:*:*:*:*:*:*
  • cpe:2.3:h:siemens:ruggedcom_rs401:-:*:*:*:*:*:*:*
    cpe:2.3:h:siemens:ruggedcom_rs401:-:*:*:*:*:*:*:*
  • cpe:2.3:h:siemens:ruggedcom_rs416:-:*:*:*:*:*:*:*
    cpe:2.3:h:siemens:ruggedcom_rs416:-:*:*:*:*:*:*:*
  • cpe:2.3:h:siemens:ruggedcom_rs8000:-:*:*:*:*:*:*:*
    cpe:2.3:h:siemens:ruggedcom_rs8000:-:*:*:*:*:*:*:*
  • cpe:2.3:h:siemens:ruggedcom_rs8000a:-:*:*:*:*:*:*:*
    cpe:2.3:h:siemens:ruggedcom_rs8000a:-:*:*:*:*:*:*:*
  • cpe:2.3:h:siemens:ruggedcom_rs8000h:-:*:*:*:*:*:*:*
    cpe:2.3:h:siemens:ruggedcom_rs8000h:-:*:*:*:*:*:*:*
  • cpe:2.3:h:siemens:ruggedcom_rs8000t:-:*:*:*:*:*:*:*
    cpe:2.3:h:siemens:ruggedcom_rs8000t:-:*:*:*:*:*:*:*
  • cpe:2.3:h:siemens:ruggedcom_rs900gp:-:*:*:*:*:*:*:*
    cpe:2.3:h:siemens:ruggedcom_rs900gp:-:*:*:*:*:*:*:*
  • cpe:2.3:h:siemens:ruggedcom_rs900l:-:*:*:*:*:*:*:*
    cpe:2.3:h:siemens:ruggedcom_rs900l:-:*:*:*:*:*:*:*
  • cpe:2.3:h:siemens:ruggedcom_rs900w:-:*:*:*:*:*:*:*
    cpe:2.3:h:siemens:ruggedcom_rs900w:-:*:*:*:*:*:*:*
  • cpe:2.3:h:siemens:ruggedcom_rs910:-:*:*:*:*:*:*:*
    cpe:2.3:h:siemens:ruggedcom_rs910:-:*:*:*:*:*:*:*
  • cpe:2.3:h:siemens:ruggedcom_rs910l:-:*:*:*:*:*:*:*
    cpe:2.3:h:siemens:ruggedcom_rs910l:-:*:*:*:*:*:*:*
  • cpe:2.3:h:siemens:ruggedcom_rs910w:-:*:*:*:*:*:*:*
    cpe:2.3:h:siemens:ruggedcom_rs910w:-:*:*:*:*:*:*:*
  • cpe:2.3:h:siemens:ruggedcom_rs920l:-:*:*:*:*:*:*:*
    cpe:2.3:h:siemens:ruggedcom_rs920l:-:*:*:*:*:*:*:*
  • cpe:2.3:h:siemens:ruggedcom_rs920w:-:*:*:*:*:*:*:*
    cpe:2.3:h:siemens:ruggedcom_rs920w:-:*:*:*:*:*:*:*
  • cpe:2.3:h:siemens:ruggedcom_rs930l:-:*:*:*:*:*:*:*
    cpe:2.3:h:siemens:ruggedcom_rs930l:-:*:*:*:*:*:*:*
  • cpe:2.3:h:siemens:ruggedcom_rs930w:-:*:*:*:*:*:*:*
    cpe:2.3:h:siemens:ruggedcom_rs930w:-:*:*:*:*:*:*:*
  • cpe:2.3:h:siemens:ruggedcom_rs940g:-:*:*:*:*:*:*:*
    cpe:2.3:h:siemens:ruggedcom_rs940g:-:*:*:*:*:*:*:*
  • cpe:2.3:h:siemens:ruggedcom_rs969:-:*:*:*:*:*:*:*
    cpe:2.3:h:siemens:ruggedcom_rs969:-:*:*:*:*:*:*:*
  • cpe:2.3:h:siemens:ruggedcom_rsg2100p:-:*:*:*:*:*:*:*
    cpe:2.3:h:siemens:ruggedcom_rsg2100p:-:*:*:*:*:*:*:*
  • cpe:2.3:h:siemens:ruggedcom_rsg2200:-:*:*:*:*:*:*:*
    cpe:2.3:h:siemens:ruggedcom_rsg2200:-:*:*:*:*:*:*:*
  • cpe:2.3:o:siemens:ruggedcom_ros:4.3.4:*:*:*:*:*:*:*
    cpe:2.3:o:siemens:ruggedcom_ros:4.3.4:*:*:*:*:*:*:*
  • cpe:2.3:o:siemens:ruggedcom_ros:4.3.7:*:*:*:*:*:*:*
    cpe:2.3:o:siemens:ruggedcom_ros:4.3.7:*:*:*:*:*:*:*
  • cpe:2.3:o:siemens:ruggedcom_ros:4.3.8:*:*:*:*:*:*:*
    cpe:2.3:o:siemens:ruggedcom_ros:4.3.8:*:*:*:*:*:*:*
  • cpe:2.3:o:siemens:ruggedcom_ros:5.0.1:*:*:*:*:*:*:*
    cpe:2.3:o:siemens:ruggedcom_ros:5.0.1:*:*:*:*:*:*:*
  • cpe:2.3:h:siemens:ruggedcom_rmc8388:-:*:*:*:*:*:*:*
    cpe:2.3:h:siemens:ruggedcom_rmc8388:-:*:*:*:*:*:*:*
  • cpe:2.3:h:siemens:ruggedcom_rs416v2:-:*:*:*:*:*:*:*
    cpe:2.3:h:siemens:ruggedcom_rs416v2:-:*:*:*:*:*:*:*
  • cpe:2.3:h:siemens:ruggedcom_rs900:-:*:*:*:*:*:*:*
    cpe:2.3:h:siemens:ruggedcom_rs900:-:*:*:*:*:*:*:*
  • cpe:2.3:h:siemens:ruggedcom_rs900g:-:*:*:*:*:*:*:*
    cpe:2.3:h:siemens:ruggedcom_rs900g:-:*:*:*:*:*:*:*
  • cpe:2.3:h:siemens:ruggedcom_rsg2100:-:*:*:*:*:*:*:*
    cpe:2.3:h:siemens:ruggedcom_rsg2100:-:*:*:*:*:*:*:*
  • cpe:2.3:h:siemens:ruggedcom_rsg2288:-:*:*:*:*:*:*:*
    cpe:2.3:h:siemens:ruggedcom_rsg2288:-:*:*:*:*:*:*:*
  • cpe:2.3:h:siemens:ruggedcom_rsg2300:-:*:*:*:*:*:*:*
    cpe:2.3:h:siemens:ruggedcom_rsg2300:-:*:*:*:*:*:*:*
  • cpe:2.3:h:siemens:ruggedcom_rsg2300p:-:*:*:*:*:*:*:*
    cpe:2.3:h:siemens:ruggedcom_rsg2300p:-:*:*:*:*:*:*:*
  • cpe:2.3:h:siemens:ruggedcom_rsg2488:-:*:*:*:*:*:*:*
    cpe:2.3:h:siemens:ruggedcom_rsg2488:-:*:*:*:*:*:*:*
  • cpe:2.3:h:siemens:ruggedcom_rsg907r:-:*:*:*:*:*:*:*
    cpe:2.3:h:siemens:ruggedcom_rsg907r:-:*:*:*:*:*:*:*
  • cpe:2.3:h:siemens:ruggedcom_rsg908c:-:*:*:*:*:*:*:*
    cpe:2.3:h:siemens:ruggedcom_rsg908c:-:*:*:*:*:*:*:*
  • cpe:2.3:h:siemens:ruggedcom_rsg909r:-:*:*:*:*:*:*:*
    cpe:2.3:h:siemens:ruggedcom_rsg909r:-:*:*:*:*:*:*:*
  • cpe:2.3:h:siemens:ruggedcom_rsg910c:-:*:*:*:*:*:*:*
    cpe:2.3:h:siemens:ruggedcom_rsg910c:-:*:*:*:*:*:*:*
  • cpe:2.3:h:siemens:ruggedcom_rsg920p:-:*:*:*:*:*:*:*
    cpe:2.3:h:siemens:ruggedcom_rsg920p:-:*:*:*:*:*:*:*
  • cpe:2.3:h:siemens:ruggedcom_rsl910:-:*:*:*:*:*:*:*
    cpe:2.3:h:siemens:ruggedcom_rsl910:-:*:*:*:*:*:*:*
  • cpe:2.3:h:siemens:ruggedcom_rst2228:-:*:*:*:*:*:*:*
    cpe:2.3:h:siemens:ruggedcom_rst2228:-:*:*:*:*:*:*:*
  • cpe:2.3:h:siemens:ruggedcom_rst2228p:-:*:*:*:*:*:*:*
    cpe:2.3:h:siemens:ruggedcom_rst2228p:-:*:*:*:*:*:*:*
  • cpe:2.3:h:siemens:ruggedcom_rst916c:-:*:*:*:*:*:*:*
    cpe:2.3:h:siemens:ruggedcom_rst916c:-:*:*:*:*:*:*:*
  • cpe:2.3:h:siemens:ruggedcom_rst916p:-:*:*:*:*:*:*:*
    cpe:2.3:h:siemens:ruggedcom_rst916p:-:*:*:*:*:*:*:*

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