Archivos mensuales: octubre 2024

Microsoft Edge (Chromium-based) Remote Code Execution Vulnerability

Microsoft Edge (Chromium-based) Remote Code Execution Vulnerability

Microsoft Edge (Chromium-based) Remote Code Execution Vulnerability

Microsoft Edge (Chromium-based) Remote Code Execution Vulnerability

Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in VillaTheme Email Template Customizer for WooCommerce allows Stored XSS.This issue affects Email Template Customizer for WooCommerce: from n/a through 1.2.5.

Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in VillaTheme CURCY allows Reflected XSS.This issue affects CURCY: from n/a through 2.2.3.

### Impact

When this library is used to deserialize messagepack data from an untrusted source, there is a risk of a denial of service attack by an attacker that sends data contrived to produce hash collisions, leading to large CPU consumption disproportionate to the size of the data being deserialized.

This is similar to [a prior advisory](https://github.com/MessagePack-CSharp/MessagePack-CSharp/security/advisories/GHSA-7q36-4xx7-xcxf), which provided an inadequate fix for the hash collision part of the vulnerability.

### Patches

The following steps are required to mitigate this risk.

1. Upgrade to a version of the library where a fix is available.
1. Review the steps in [this previous advisory](https://github.com/MessagePack-CSharp/MessagePack-CSharp/security/advisories/GHSA-7q36-4xx7-xcxf) to ensure you have your application configured for untrusted data.

### Workarounds

If upgrading MessagePack to a patched version is not an option for you, you may apply a manual workaround as follows:

1. Declare a class that derives from `MessagePackSecurity`.
2. Override the `GetHashCollisionResistantEqualityComparer` method to provide a collision-resistant hash function of your own and avoid calling `base.GetHashCollisionResistantEqualityComparer()`.
3. Configure a `MessagePackSerializerOptions` with an instance of your derived type by calling `WithSecurity` on an existing options object.
4. Use your custom options object for all deserialization operations. This may be by setting the `MessagePackSerializer.DefaultOptions` static property, if you call methods that rely on this default property, and/or by passing in the options object explicitly to any `Deserialize` method.

### References

– Learn more about best security practices when reading untrusted data with [MessagePack 1.x](https://github.com/MessagePack-CSharp/MessagePack-CSharp/tree/v1.x#security) or [MessagePack 2.x](https://github.com/MessagePack-CSharp/MessagePack-CSharp#security).
– The .NET team's [discussion on hash collision vulnerabilities of their `HashCode` struct](https://github.com/GrabYourPitchforks/runtime/blob/threat_models/docs/design/security/System.HashCode.md).

### For more information

If you have any questions or comments about this advisory:

* [Start a public discussion](https://github.com/MessagePack-CSharp/MessagePack-CSharp/discussions)
* [Email us privately](mailto:andrewarnott@live.com)

Cross Site Scripting vulnerability in JavaScript Library jquery-ui v.1.13.1 allows a remote attacker to obtain sensitive information and execute arbitrary code via a crafted payload to the window.addEventListener component.

An issue in MYSQL MariaDB v.11.1 allows a remote attacker to execute arbitrary code via the lib_mysqludf_sys.so function.

Insecure permissions in the sys_exec function of Oracle MYSQL MariaDB v10.5 allows authenticated attackers to execute arbitrary commands with elevated privileges.