#dos

A vulnerability was found in DriverGenius 9.70.0.346. It has been rated as problematic. Affected by this issue is the function 0x9c40a0c8/0x9c40a0dc/0x9c40a0e0/0x9c40a0d8/0x9c4060d4/0x9c402004/0x9c402088/0x9c40208c/0x9c4060d0/0x9c4060cc/0x9c4060c4/0x9c402084 in the library mydrivers64.sys of the component IOCTL Handler. The manipulation leads to denial of service. It is possible to launch the attack on the local host. The exploit has been disclosed to the public and may be used. VDB-224234 is the identifier assigned to this vulnerability.

matrix-js-sdk is a Matrix messaging protocol Client-Server SDK for JavaScript. In versions prior to 24.0.0 events sent with special strings in key places can temporarily disrupt or impede the matrix-js-sdk from functioning properly, potentially impacting the consumer's ability to process data safely. Note that the matrix-js-sdk can appear to be operating normally but be excluding or corrupting runtime data presented to the consumer. This vulnerability is distinct from GHSA-rfv9-x7hh-xc32 which covers a similar issue. The issue has been patched in matrix-js-sdk 24.0.0 and users are advised to upgrade. There are no known workarounds for this vulnerability.

comrak is a CommonMark + GFM compatible Markdown parser and renderer written in rust. A range of quadratic parsing issues are present in Comrak. These can be used to craft denial-of-service attacks on services that use Comrak to parse Markdown. This issue has been addressed in version 0.17.0. Users are advised to upgrade. There are no known workarounds for this vulnerability. This issue is also tracked as `GHSL-2023-047`

Ubuntu Security Notice 5978-1 - It was discovered that the network queuing discipline implementation in the Linux kernel contained a use-after-free vulnerability. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. It was discovered that the KVM VMX implementation in the Linux kernel did not properly handle indirect branch prediction isolation between L1 and L2 VMs. An attacker in a guest VM could use this to expose sensitive information from the host OS or other guest VMs.

Red Hat Security Advisory 2023-1486-01 - Grafana is an open source, feature rich metrics dashboard and graph editor for Graphite, InfluxDB & OpenTSDB. Django is a high-level Python Web framework that encourages rapid development and a clean, pragmatic design. It focuses on automating as much as possible and adhering to the DRY principle. Ruby is an extensible, interpreted, object-oriented, scripting language. It has features to process text files and to perform system management tasks. Issues addressed include HTTP request smuggling, code execution, and denial of service vulnerabilities.

Ubuntu Security Notice 5977-1 - It was discovered that the network queuing discipline implementation in the Linux kernel contained a use-after-free vulnerability. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. It was discovered that the KVM VMX implementation in the Linux kernel did not properly handle indirect branch prediction isolation between L1 and L2 VMs. An attacker in a guest VM could use this to expose sensitive information from the host OS or other guest VMs.

Tunnel Interface Driver suffers from a denial of service vulnerability.

Ubuntu Security Notice 5976-1 - It was discovered that the Upper Level Protocol subsystem in the Linux kernel did not properly handle sockets entering the LISTEN state in certain protocols, leading to a use-after-free vulnerability. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. It was discovered that the KVM VMX implementation in the Linux kernel did not properly handle indirect branch prediction isolation between L1 and L2 VMs. An attacker in a guest VM could use this to expose sensitive information from the host OS or other guest VMs.

### Impact A range of quadratic parsing issues from `cmark`/`cmark-gfm` are also present in Comrak. These can be used to craft denial-of-service attacks on services that use Comrak to parse Markdown. ### Patches 0.17.0 contains fixes to known quadratic parsing issues. ### Workarounds n/a ### References * https://github.com/commonmark/cmark/issues/255 * https://github.com/commonmark/cmark/issues/389 * https://github.com/commonmark/cmark/issues/373 * https://github.com/commonmark/cmark/issues/299 * https://github.com/commonmark/cmark/issues/388 * https://github.com/commonmark/cmark/issues/284 * https://github.com/commonmark/cmark/issues/218 * https://github.com/commonmark/cmark/pull/232 * https://github.com/github/cmark-gfm/blob/c32ef78bae851cb83b7ad52d0fbff880acdcd44a/test/pathological_tests.py#L63-L65 * https://github.com/github/cmark-gfm/blob/c32ef78bae851cb83b7ad52d0fbff880acdcd44a/test/pathological_tests.py#L87-L89

Categories: News Tags: NCA Tags: national crime agency Tags: DDoS Tags: distributed denial of service Tags: booter Tags: underground The British National Crime Agency has been setting up fake DDoS services to teach people a lesson in what not to do online. (Read more...) The post Fake DDoS services set up to trap cybercriminals appeared first on Malwarebytes Labs.