CVE-2023-34658 Vulnerability Analysis & Exploit Details

CVE-2023-34658
Vulnerability Scoring

5.3
/10
Significant Risk

Security assessments indicate that CVE-2023-34658 presents a notable risk, potentially requiring prompt mitigation.

Attack Complexity Details

  • Attack Complexity: Low
    Exploits can be performed without significant complexity or 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-2023-34658 Details

Status: Modified

Last updated: 🕒 27 Nov 2024, 15:15 UTC
Originally published on: 🕔 29 Jun 2023, 17:15 UTC

Time between publication and last update: 516 days

CVSS Release: version 3

CVSS3 Source

nvd@nist.gov

CVSS3 Type

Primary

CVSS3 Vector

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

CVE-2023-34658 Vulnerability Summary

CVE-2023-34658: Telegram v9.6.3 on iOS allows attackers to hide critical information on the User Interface via calling the function SFSafariViewController.

Assessing the Risk of CVE-2023-34658

Access Complexity Graph

The exploitability of CVE-2023-34658 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-2023-34658

With low attack complexity and no required privileges, CVE-2023-34658 is an easy target for cybercriminals. Organizations should prioritize immediate mitigation measures to prevent unauthorized access and data breaches.

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-2023-34658, 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-2023-34658, showing how Confidentiality, Integrity, and Availability might be affected if the vulnerability is exploited. Higher values usually signal greater potential damage.

  • Confidentiality: None
    CVE-2023-34658 has no significant impact on data confidentiality.
  • Integrity: Low
    Exploiting CVE-2023-34658 may cause minor changes to data without severely impacting its accuracy.
  • Availability: None
    CVE-2023-34658 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: 0.056% (probability of exploit)

EPSS Percentile: 26.69% (lower percentile = lower relative risk)
This vulnerability is less risky than approximately 73.31% of others.

CVE-2023-34658 References

External References

CWE Common Weakness Enumeration

CWE-1021

CAPEC Common Attack Pattern Enumeration and Classification

  • Clickjacking CAPEC-103 An adversary tricks a victim into unknowingly initiating some action in one system while interacting with the UI from a seemingly completely different, usually an adversary controlled or intended, system.
  • Flash File Overlay CAPEC-181 An attacker creates a transparent overlay using flash in order to intercept user actions for the purpose of performing a clickjacking attack. In this technique, the Flash file provides a transparent overlay over HTML content. Because the Flash application is on top of the content, user actions, such as clicks, are caught by the Flash application rather than the underlying HTML. The action is then interpreted by the overlay to perform the actions the attacker wishes.
  • iFrame Overlay CAPEC-222 In an iFrame overlay attack the victim is tricked into unknowingly initiating some action in one system while interacting with the UI from seemingly completely different system.
  • Task Impersonation CAPEC-504 An adversary, through a previously installed malicious application, impersonates an expected or routine task in an attempt to steal sensitive information or leverage a user's privileges.
  • Tapjacking CAPEC-506 An adversary, through a previously installed malicious application, displays an interface that misleads the user and convinces them to tap on an attacker desired location on the screen. This is often accomplished by overlaying one screen on top of another while giving the appearance of a single interface. There are two main techniques used to accomplish this. The first is to leverage transparent properties that allow taps on the screen to pass through the visible application to an application running in the background. The second is to strategically place a small object (e.g., a button or text field) on top of the visible screen and make it appear to be a part of the underlying application. In both cases, the user is convinced to tap on the screen but does not realize the application that they are interacting with.
  • Cross Frame Scripting (XFS) CAPEC-587 This attack pattern combines malicious Javascript and a legitimate webpage loaded into a concealed iframe. The malicious Javascript is then able to interact with a legitimate webpage in a manner that is unknown to the user. This attack usually leverages some element of social engineering in that an attacker must convinces a user to visit a web page that the attacker controls.
  • Credential Prompt Impersonation CAPEC-654 An adversary, through a previously installed malicious application, impersonates a credential prompt in an attempt to steal a user's credentials.

Vulnerable Configurations

  • cpe:2.3:a:telegram:telegram:9.6.3:*:*:*:*:iphone_os:*:*
    cpe:2.3:a:telegram:telegram:9.6.3:*:*:*:*:iphone_os:*:*

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