Data Exposure Vulnerability in Spring LDAP: Versions 2.4.0 to 3.2.7
Summary
CVE-2024-38829: A vulnerability in Spring LDAP allows data exposure for case sensitive comparisons.This issue affects Spring LDAP: from 2.4.0 through 2.4.3, from 3.0.0 through 3.0.9, from 3.1.0 through 3.1.7, from 3.2.0 through 3.2.7, A... Affects libspring-java versions 4.3.30-1 – 4.3.30-3. No fix is published. How to fix ↓
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Background
Spring LDAP is a part of the Spring Framework that provides a simplified way to interact with LDAP (Lightweight Directory Access Protocol) servers. It is widely used in Java applications for authentication and directory services. The package offers features such as connection pooling, LDAP template support, and transaction management. However, certain versions of Spring LDAP are vulnerable to a data exposure issue due to improper handling of case-sensitive comparisons, which can lead to unintended data being queried.
Vulnerability Detail
The vulnerability identified as CVE-2024-38829 arises from the usage of String.toLowerCase() and String.toUpperCase() methods in the Spring LDAP library. These methods can exhibit Locale-dependent behavior, potentially causing incorrect case-sensitive comparisons. As a result, this can lead to unintended data exposure, where sensitive information may be retrieved from the LDAP server that should not be accessible. This issue affects Spring LDAP versions from 2.4.0 through 2.4.3, 3.0.0 through 3.0.9, 3.1.0 through 3.1.7, and 3.2.0 through 3.2.7, as well as all versions prior to 2.4.0.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
As a temporary workaround, developers can implement custom comparison logic that does not rely on the Locale-dependent methods. For instance, using a case-sensitive comparison method that explicitly defines the Locale can help mitigate the risk until the package is updated. Example code snippet:
if (string1.equalsIgnoreCase(string2)) {
// Handle case-insensitive match
} else {
// Handle case-sensitive logic
}
Conclusion
CVE-2024-38829 poses a significant risk to applications using vulnerable versions of Spring LDAP due to potential data exposure. It is crucial for developers to update to the latest patched versions or implement workarounds to mitigate this risk. Regular monitoring for vulnerabilities using tools like Vulert can help maintain application security.
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FAQ
CVE-2024-38829 is a vulnerability in Spring LDAP that allows for data exposure due to improper handling of case-sensitive comparisons.
The vulnerability affects Spring LDAP versions from 2.4.0 to 2.4.3, 3.0.0 to 3.0.9, 3.1.0 to 3.1.7, 3.2.0 to 3.2.7, and all versions prior to 2.4.0.
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If an immediate update is not possible, consider implementing a workaround by using custom comparison logic that avoids Locale-dependent methods.
More information can be found on the Spring Security page related to CVE-2024-38820 at https://spring.io/security/cve-2024-38820.
References
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