CVE-2023-3373 Vulnerability Analysis & Exploit Details

CVE-2023-3373
Vulnerability Scoring

5.9
/10
Significant Risk

Security assessments indicate that CVE-2023-3373 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: Required
    User interaction is necessary for successful exploitation.

CVE-2023-3373 Details

Status: Modified

Last updated: 🕗 21 Nov 2024, 08:17 UTC
Originally published on: 🕛 04 Aug 2023, 00:15 UTC

Time between publication and last update: 475 days

CVSS Release: version 3

CVSS3 Source

Mitsubishielectric.Psirt@yd.MitsubishiElectric.co.jp

CVSS3 Type

Secondary

CVSS3 Vector

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

CVE-2023-3373 Vulnerability Summary

CVE-2023-3373: Predictable Exact Value from Previous Values vulnerability in Mitsubishi Electric Corporation GOT2000 Series GT21 model versions 01.49.000 and prior and GOT SIMPLE Series GS21 model versions 01.49.000 and prior allows a remote unauthenticated attacker to hijack data connections (session hijacking) or prevent legitimate users from establishing data connections (to cause DoS condition) by guessing the listening port of the data connection on FTP server and connecting to it.

Assessing the Risk of CVE-2023-3373

Access Complexity Graph

The exploitability of CVE-2023-3373 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-2023-3373

CVE-2023-3373 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-2023-3373, 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-2023-3373, showing how Confidentiality, Integrity, and Availability might be affected if the vulnerability is exploited. Higher values usually signal greater potential damage.

  • Confidentiality: None
    CVE-2023-3373 has no significant impact on data confidentiality.
  • Integrity: High
    CVE-2023-3373 could allow unauthorized modifications to data, potentially affecting system reliability and trust.
  • Availability: Low
    CVE-2023-3373 may slightly degrade system performance without fully affecting service availability.

Exploit Prediction Scoring System (EPSS)

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

EPSS Score: 0.303% (probability of exploit)

EPSS Percentile: 69.9% (lower percentile = lower relative risk)
This vulnerability is less risky than approximately 30.099999999999994% of others.

CVE-2023-3373 References

External References

CWE Common Weakness Enumeration

CWE-330

CAPEC Common Attack Pattern Enumeration and Classification

  • Brute Force CAPEC-112 In this attack, some asset (information, functionality, identity, etc.) is protected by a finite secret value. The attacker attempts to gain access to this asset by using trial-and-error to exhaustively explore all the possible secret values in the hope of finding the secret (or a value that is functionally equivalent) that will unlock the asset.
  • Signature Spoofing by Key Recreation CAPEC-485 An attacker obtains an authoritative or reputable signer's private signature key by exploiting a cryptographic weakness in the signature algorithm or pseudorandom number generation and then uses this key to forge signatures from the original signer to mislead a victim into performing actions that benefit the attacker.
  • 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:mitsubishielectric:gt21_firmware:-:*:*:*:*:*:*:*
    cpe:2.3:o:mitsubishielectric:gt21_firmware:-:*:*:*:*:*:*:*
  • cpe:2.3:o:mitsubishielectric:gt21_firmware:01.49.000:*:*:*:*:*:*:*
    cpe:2.3:o:mitsubishielectric:gt21_firmware:01.49.000:*:*:*:*:*:*:*
  • cpe:2.3:h:mitsubishielectric:gt21:-:*:*:*:*:*:*:*
    cpe:2.3:h:mitsubishielectric:gt21:-:*:*:*:*:*:*:*
  • cpe:2.3:o:mitsubishielectric:gs21_firmware:-:*:*:*:*:*:*:*
    cpe:2.3:o:mitsubishielectric:gs21_firmware:-:*:*:*:*:*:*:*
  • cpe:2.3:o:mitsubishielectric:gs21_firmware:01.49.000:*:*:*:*:*:*:*
    cpe:2.3:o:mitsubishielectric:gs21_firmware:01.49.000:*:*:*:*:*:*:*
  • cpe:2.3:h:mitsubishielectric:gs21:-:*:*:*:*:*:*:*
    cpe:2.3:h:mitsubishielectric:gs21:-:*:*:*:*:*:*:*

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