#vulnerability

### Impact In Synapse versions before 1.120.1, enabling the `dynamic_thumbnails` option or processing a specially crafted request could trigger the decoding and thumbnail generation of uncommon image formats, potentially invoking external tools like Ghostscript for processing. This significantly expands the attack surface in a historically vulnerable area, presenting a risk that far outweighs the benefit, particularly since these formats are rarely used on the open web or within the Matrix ecosystem. For a list of image formats, as well as decoding libraries and helper programs used, see [the Pillow documentation](https://pillow.readthedocs.io/en/stable/handbook/image-file-formats.html). ### Patches Synapse 1.120.1 addresses the issue by restricting thumbnail generation to images in the following widely used formats: PNG, JPEG, GIF, and WebP. ### Workarounds - Ensure any image codecs and helper programs, such as Ghostscript, are patched against security vulnerabilities. - Uninst...

### Impact Synapse versions before 1.120.1 fail to properly validate invites received over federation. This vulnerability allows a malicious server to send a specially crafted invite that disrupts the invited user's `/sync` functionality. ### Patches Synapse 1.120.1 rejects such invalid invites received over federation and restores the ability to sync for affected users. ### Workarounds Server administrators can disable federation from untrusted servers. ### For more information If you have any questions or comments about this advisory, please email us at [security at element.io](mailto:security@element.io).

### Impact In Synapse before 1.120.1, `multipart/form-data` requests can in certain configurations transiently increase memory consumption beyond expected levels while processing the request, which can be used to amplify denial of service attacks. ### Patches Synapse 1.120.1 resolves the issue by denying requests with unsupported `multipart/form-data` content type. ### Workarounds Limiting request sizes or blocking the `multipart/form-data` content type before the requests reach Synapse, for example in a reverse proxy, alleviates the issue. Another approach that mitigates the attack is to use a low `max_upload_size` in Synapse. ### References - https://github.com/twisted/twisted/issues/4688#issuecomment-1167705518 - https://github.com/twisted/twisted/issues/4688#issuecomment-2385711609 ### For more information If you have any questions or comments about this advisory, please email us at [security at element.io](mailto:security@element.io).

About Elevation of Privilege – needrestart (CVE-2024-48990) vulnerability. On November 19, Qualys released a security bulletin about five privilege escalation vulnerabilities in the needrestart utility (CVE-2024-48990, CVE-2024-48991, CVE-2024-48992, CVE-2024-10224, and CVE-2024-11003) used in Ubuntu Server, starting with version 21.04. The needrestart utility runs automatically after APT operations (installing, updating, or removing packages). It checks if […]

A massive data leak linked to the MOVEit vulnerability has exposed millions of employee records from major companies. Learn about the impact of this leak, the role of the "data vigilante" Nam3L3ss.

About Path Traversal – Zyxel firewall (CVE-2024-11667) vulnerability. A directory traversal vulnerability in the web management interface of Zyxel firewall could allow an attacker to download or upload files via a crafted URL. The vulnerability affects Zyxel ZLD firmware versions from 5.00 to 5.38, used in the ATP, USG FLEX, USG FLEX 50(W), and USG20(W)-VPN […]

Until C-level executives fully understand potential threats and implement effective mitigation strategies, healthcare organizations will remain vulnerable and at risk of disruption.

This Metasploit module exploits a missing authentication vulnerability affecting FortiManager and FortiManager Cloud devices to achieve unauthenticated RCE with root privileges. The vulnerable FortiManager versions are 7.6.0, 7.4.0 through 7.4.4, 7.2.0 through 7.2.7, 7.0.0 through 7.0.12, 6.4.0 through 6.4.14, and 6.2.0 through 6.2.12. The vulnerable FortiManager Cloud versions are 7.4.1 through 7.4.4, 7.2.1 through 7.2.7, 7.0.1 through 7.0.12, and 6.4 (all versions).

Debian Linux Security Advisory 5823-1 - The following vulnerabilities have been discovered in the WebKitGTK web engine. Clement Lecigne and Benoit Sevens discovered that processing maliciously crafted web content may lead to arbitrary code execution. Apple is aware of a report that this issue may have been actively exploited on Intel-based Mac systems. Clement Lecigne and Benoit Sevens discovered that processing maliciously crafted web content may lead to a cross site scripting attack. Apple is aware of a report that this issue may have been actively exploited on Intel-based Mac systems.

Paxton Net2 suffers from an insecure backend database issue that can lead to leaking sensitive information.