CVE-2024-22893: OpenSlides Password Hash Timing Attack Vulnerability

openslides Updated 20 May 2026

Summary

25/09/2024
No i
High
7.5

CVE-2024-22893: OpenSlides 4.0.15 verifies passwords by comparing password hashes using a function with content-dependent runtime. Affects openslides versions 1.3 – 3.3. No fix is published. How to fix ↓

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Background

OpenSlides is an open-source software designed for managing and conducting meetings, providing features such as agenda management, voting, and participant interaction. It is widely used in various organizations for its collaborative capabilities. However, version 4.0.15 has a critical vulnerability related to password verification that could expose sensitive user information.

Vulnerability Detail

In OpenSlides version 4.0.15, the method used to verify passwords involves comparing password hashes with a function that has content-dependent runtime characteristics. This design flaw can be exploited by attackers through timing attacks, allowing them to glean information about the password hash. Such vulnerabilities can lead to unauthorized access to user accounts, compromising the security of the entire application.

How To Fix

No fixed version is published for this vulnerability.

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Workaround

As a temporary measure, users can implement rate limiting on login attempts to mitigate the risk of timing attacks. This can be done by adding a delay for each failed login attempt, which makes it harder for attackers to exploit the timing vulnerability.

Conclusion

The vulnerability identified as CVE-2024-22893 in OpenSlides 4.0.15 poses a significant risk due to its potential for exploitation via timing attacks on password hashes. Users are strongly advised to update to the latest version to mitigate this risk and protect their applications.

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FAQ

A timing attack is a type of side-channel attack where an attacker attempts to compromise a cryptographic algorithm by analyzing the time it takes to execute cryptographic algorithms.

You can use Vulert's playground at Vulert Scanner to check if your application is affected by this vulnerability without needing to sign up.

If exploited, this vulnerability could allow attackers to gain unauthorized access to user accounts, leading to data breaches and loss of sensitive information.

Yes, updating to the latest version of OpenSlides will include the necessary patches to fix this vulnerability.

The CVSS score for this vulnerability is 7.5, indicating a high level of severity.

Related vulnerabilities

Recent vulnerabilities recorded for openslides.

How To Fix

No fixed version is published for this vulnerability.

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