ghsa

### Impact The power level parsing within gomatrixserverlib was failing to parse the `"events_default"` key of the `m.room.power_levels` event, defaulting the event default power level to zero in all cases. In rooms where the `"events_default"` power level had been changed, this could result in events either being incorrectly authorised or rejected by Dendrite servers. ### Patches gomatrixserverlib contains a fix as of commit `723fd49` and Dendrite 0.9.3 has been updated accordingly. ### Workarounds Matrix rooms where the `"events_default"` power level has not been changed from the default of zero are not vulnerable. ### For more information If you have any questions or comments about this advisory, e-mail us at [[email protected]](mailto:[email protected]).

Affected versions of this crate passes an uninitialized buffer to a user-provided `Read` implementation. Arbitrary `Read` implementations can read from the uninitialized buffer (memory exposure) and also can return incorrect number of bytes written to the buffer. Reading from uninitialized memory produces undefined values that can quickly invoke undefined behavior. Note: there is only UB in the case where a user provides a struct whose `Read` implementation inspects the buffer passed to `read_exact` before writing to it. This is an unidiomatic (albeit possible) `Read` implementation. See https://github.com/MaterializeInc/materialize/issues/8669 for details.

Microsoft is releasing this security advisory to provide information about a vulnerability in .NET 6.0, .NET 5.0 and .NET Core 3.1. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A vulnerability exists in .NET 6.0, .NET 5.0 and .NET core 3.1 where a malicious client can can cause a denial of service when HTML forms are parsed. ### Affected software * Any .NET 6.0 application running on .NET 6.0.4 or earlier. * Any .NET 5.0 application running .NET 5.0.16 or earlier. * Any .NET Core 3.1 application running on .NET Core 3.1.24 or earlier. #### Affected packages **.NET Core 3.1** | Package name | Affected version | Patched version | |---------------------------------------------------|---------------------|---------------| | Microsoft.AspNetCore.App.Runtime.win-x64 | >=3.0.0,3.1.24 | 3.1.25 | | Microsoft.AspNetCore.App.Runtime.linux-x64 | >=3.0.0,3....

Microsoft is releasing this security advisory to provide information about a vulnerability in .NET 6.0, .NET 5.0 and .NET Core 3.1. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A vulnerability exists in .NET 6.0, .NET 5.0 and .NET core 3.1 where a malicious client can manipulate cookies and cause a Denial of Service. ### Affected software * Any .NET 6.0 application running on .NET 6.0.4 or earlier. * Any .NET 5.0 application running .NET 5.0.16 or earlier. * Any .NET Core 3.1 application running on .NET Core 3.1.24 or earlier. #### Affected packages **.NET Core 3.1** | Package name | Affected versions | Patched versions | |---------------------------------------------------|-------------------|------------------| | Microsoft.Owin.Security.Cookies | <=4.21 | 4.22 | | Microsoft.Owin.Security | <=4.21 ...

### Introduction Cross-site scripting (XSS) is a type of vulnerability that allows to execute any kind of JavaScript code inside the Panel session of the same or other users. In the Panel, a harmful script can for example trigger requests to Kirby's API with the permissions of the victim. Such vulnerabilities are critical if you might have potential attackers in your group of authenticated Panel users. They can escalate their privileges if they get access to the Panel session of an admin user. Depending on your site, other JavaScript-powered attacks are possible. ### Impact The multiselect field allows to select tags from an autocompleted list. Unfortunately, the Panel in Kirby 3.5 used HTML rendering for the raw option value. This allowed **attackers with influence on the options source** (e.g. content of sibling pages or an API endpoint) to inject HTML code. If a page in the Panel that uses the manipulated multiselect options was visited by a victim and the victim opened the aut...

A flaw was found in Keycloak. This vulnerability allows anyone to register a new security device or key when there is not a device already registered for any user by using the WebAuthn password-less login flow.

ClassLoaderTheme and ClasspathThemeResourceProviderFactory allows reading any file available as a resource to the classloader. By sending requests for theme resources with a relative path from an external HTTP client, the client will receive the content of random files if available.

A flaw was found in wildfly-core in all versions. If a vault expression is in the form of a single attribute that contains multiple expressions, a user who was granted access to the management interface can potentially access a vault expression they should not be able to access and possibly retrieve the item which was stored in the vault. The highest threat from this vulnerability is data confidentiality and integrity.

A flaw was found in Keycloak. This flaw allows a privileged attacker to use the malicious payload as the group name while creating a new group from the admin console, leading to a stored Cross-site scripting (XSS) attack.

The Deluge Web-UI is vulnerable to cross-site scripting through a crafted torrent file. The the data from torrent files is not properly sanitised as it's interpreted directly as HTML. Someone who supplies the user with a malicious torrent file can execute arbitrary Javascript code in the context of the user's browser session.