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Remote Code Execution in SCIMono

High severity GitHub Reviewed Published Feb 9, 2021 in SAP/scimono • Updated Feb 1, 2023

Package

maven com.sap.scimono:scimono-server (Maven)

Affected versions

< 0.0.19

Patched versions

0.0.19

Description

Impact

It is possible for attacker to inject and execute java expression and compromising the availability and integrity of the system.

Patches

The issue was fixed on 0.0.19 version

References

@karaimin karaimin published to SAP/scimono Feb 9, 2021
Published by the National Vulnerability Database Feb 9, 2021
Reviewed Feb 10, 2021
Published to the GitHub Advisory Database Feb 10, 2021
Last updated Feb 1, 2023

Severity

High

EPSS score

Exploit Prediction Scoring System (EPSS)

This score estimates the probability of this vulnerability being exploited within the next 30 days. Data provided by FIRST.
(99th percentile)

Weaknesses

Improper Link Resolution Before File Access ('Link Following')

The product attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a link or shortcut that resolves to an unintended resource. Learn more on MITRE.

UNIX Hard Link

The product, when opening a file or directory, does not sufficiently account for when the name is associated with a hard link to a target that is outside of the intended control sphere. This could allow an attacker to cause the product to operate on unauthorized files. Learn more on MITRE.

Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')

The product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component. Learn more on MITRE.

Improper Neutralization of Special Elements used in a Command ('Command Injection')

The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component. Learn more on MITRE.

Unchecked Return Value to NULL Pointer Dereference

The product does not check for an error after calling a function that can return with a NULL pointer if the function fails, which leads to a resultant NULL pointer dereference. Learn more on MITRE.

Improper Neutralization of Special Elements used in an Expression Language Statement ('Expression Language Injection')

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. Learn more on MITRE.

CVE ID

CVE-2021-21479

GHSA ID

GHSA-29q4-gxjq-rx5c

Source code

No known source code
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