QOS Logback-core up to 1.5.12 JaninoEventEvaluator expression language injection

Summaryinfo

A vulnerability, which was classified as critical, has been found in QOS Logback-core up to 1.5.12. This affects an unknown function of the component JaninoEventEvaluator. The manipulation leads to expression language injection. This vulnerability is traded as CVE-2024-12798. It is possible to initiate the attack remotely. There is no exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in QOS Logback-core up to 1.5.12. It has been rated as critical. This issue affects an unknown functionality of the component JaninoEventEvaluator. The manipulation with an unknown input leads to a expression language injection vulnerability. Using CWE to declare the problem leads to CWE-917. The product constructs all or part of an expression language (EL) statement in a framework such as a Java Server Page (JSP) using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended EL statement before it is executed. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

ACE vulnerability in JaninoEventEvaluator by QOS.CH logback-core upto and including version 1.5.12 in Java applications allows attacker to execute arbitrary code by compromising an existing logback configuration file or by injecting an environment variable before program execution. Malicious logback configuration files can allow the attacker to execute arbitrary code using the JaninoEventEvaluator extension. A successful attack requires the user to have write access to a configuration file. Alternatively, the attacker could inject a malicious environment variable pointing to a malicious configuration file. In both cases, the attack requires existing privilege.

The weakness was shared by 7asecurity. The advisory is shared at logback.qos.ch. The identification of this vulnerability is CVE-2024-12798 since 12/19/2024. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. It demands that the victim is doing some kind of user interaction. Neither technical details nor an exploit are publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 213971 (openSUSE 15 Security Update : logback (SUSE-SU-2025:0072-1)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 1.5.13 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (213971). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Vendor

• QOS

Name

• Logback-core

Version

• 1.5.0
• 1.5.1
• 1.5.2
• 1.5.3
• 1.5.4
• 1.5.5
• 1.5.6
• 1.5.7
• 1.5.8
• 1.5.9
• 1.5.10
• 1.5.11
• 1.5.12

CPE 2.3info

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CPE 2.2info

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If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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