CVE-2023-26442 Vulnerability Analysis & Exploit Details

CVE-2023-26442
Vulnerability Scoring

3.2
/10
Moderate Risk

Exploiting CVE-2023-26442 requires specific conditions, leading to a moderate security impact.

Attack Complexity Details

  • Attack Complexity: High
    Exploits require significant effort and special conditions.
  • Attack Vector: Local
    Vulnerability requires local system access.
  • Privileges Required: None
    No privileges are required for exploitation.
  • Scope: Changed
    Successful exploitation can impact components beyond the vulnerable component.
  • User Interaction: None
    No user interaction is necessary for exploitation.

CVE-2023-26442 Details

Status: Modified

Last updated: 🕢 21 Nov 2024, 07:51 UTC
Originally published on: 🕐 02 Aug 2023, 13:15 UTC

Time between publication and last update: 476 days

CVSS Release: version 3

CVSS3 Source

security@open-xchange.com

CVSS3 Type

Secondary

CVSS3 Vector

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

CVE-2023-26442 Vulnerability Summary

CVE-2023-26442: In case Cacheservice was configured to use a sproxyd object-storage backend, it would follow HTTP redirects issued by that backend. An attacker with access to a local or restricted network with the capability to intercept and replay HTTP requests to sproxyd (or who is in control of the sproxyd service) could perform a server-side request-forgery attack and make Cacheservice connect to unexpected resources. We have disabled the ability to follow HTTP redirects when connecting to sproxyd resources. No publicly available exploits are known.

Assessing the Risk of CVE-2023-26442

Access Complexity Graph

The exploitability of CVE-2023-26442 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-2023-26442

CVE-2023-26442 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-2023-26442, 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-2023-26442, showing how Confidentiality, Integrity, and Availability might be affected if the vulnerability is exploited. Higher values usually signal greater potential damage.

  • Confidentiality: Low
    CVE-2023-26442 could lead to minor leaks of non-critical information without major privacy breaches.
  • Integrity: None
    CVE-2023-26442 poses no threat to data integrity.
  • Availability: None
    CVE-2023-26442 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: 46.0% (lower percentile = lower relative risk)
This vulnerability is less risky than approximately 54.0% of others.

CVE-2023-26442 References

External References

CWE Common Weakness Enumeration

CWE-918

CAPEC Common Attack Pattern Enumeration and Classification

  • Server Side Request Forgery CAPEC-664 An adversary exploits improper input validation by submitting maliciously crafted input to a target application running on a server, with the goal of forcing the server to make a request either to itself, to web services running in the server’s internal network, or to external third parties. If successful, the adversary’s request will be made with the server’s privilege level, bypassing its authentication controls. This ultimately allows the adversary to access sensitive data, execute commands on the server’s network, and make external requests with the stolen identity of the server. Server Side Request Forgery attacks differ from Cross Site Request Forgery attacks in that they target the server itself, whereas CSRF attacks exploit an insecure user authentication mechanism to perform unauthorized actions on the user's behalf.

Vulnerable Configurations

  • cpe:2.3:a:open-xchange:open-xchange_appsuite_office:7.8.3:revision11:*:*:*:*:*:*
    cpe:2.3:a:open-xchange:open-xchange_appsuite_office:7.8.3:revision11:*:*:*:*:*:*
  • cpe:2.3:a:open-xchange:open-xchange_appsuite_office:7.8.3:revision12:*:*:*:*:*:*
    cpe:2.3:a:open-xchange:open-xchange_appsuite_office:7.8.3:revision12:*:*:*:*:*:*

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