#dos

Ubuntu Security Notice 6909-1 - It was discovered that Bind incorrectly handled a flood of DNS messages over TCP. A remote attacker could possibly use this issue to cause Bind to become unstable, resulting in a denial of service. Toshifumi Sakaguchi discovered that Bind incorrectly handled having a very large number of RRs existing at the same time. A remote attacker could possibly use this issue to cause Bind to consume resources, leading to a denial of service.

## Summary Versions of `tf2-item-format` since at least `4.2.6` are vulnerable to a Regular Expression Denial of Service (ReDoS) attack when parsing crafted user input. ## Tested Versions - `5.9.13` - `5.8.10` - `5.7.0` - `5.6.17` - `4.3.5` - `4.2.6` ### v5 Upgrade package to `^5.9.14` ### v4 No patch exists. Please consult the [v4 to v5 migration guide](https://github.com/danocmx/node-tf2-item-format?tab=readme-ov-file#migrating-from-v4-to-v5) to upgrade to v5. If upgrading to v5 is not possible, fork the module repository and implement the fix detailed below. ## Impact This vulnerability can be exploited by an attacker to perform DoS attacks on any service that uses any `tf2-item-format` to parse user input.

Ubuntu Security Notice 6905-1 - It was discovered that Rack incorrectly handled certain regular expressions. A remote attacker could possibly use this issue to cause Rack to consume resources, leading to a denial of service. It was discovered that Rack incorrectly handled Multipart MIME parsing. A remote attacker could possibly use this issue to cause Rack to consume resources, leading to a denial of service. This issue only affected Ubuntu 20.04 LTS and Ubuntu 22.04 LTS.

Ubuntu Security Notice 6898-4 - Ziming Zhang discovered that the DRM driver for VMware Virtual GPU did not properly handle certain error conditions, leading to a NULL pointer dereference. A local attacker could possibly trigger this vulnerability to cause a denial of service. Gui-Dong Han discovered that the software RAID driver in the Linux kernel contained a race condition, leading to an integer overflow vulnerability. A privileged attacker could possibly use this to cause a denial of service.

Ubuntu Security Notice 6893-3 - It was discovered that a race condition existed in the Bluetooth subsystem in the Linux kernel when modifying certain settings values through debugfs. A privileged local attacker could use this to cause a denial of service. Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system.

Ubuntu Security Notice 6896-5 - It was discovered that the ATA over Ethernet driver in the Linux kernel contained a race condition, leading to a use-after-free vulnerability. An attacker could use this to cause a denial of service or possibly execute arbitrary code. It was discovered that the Atheros 802.11ac wireless driver did not properly validate certain data structures, leading to a NULL pointer dereference. An attacker could possibly use this to cause a denial of service.

View CSAF 1. EXECUTIVE SUMMARY CVSS v3 7.5 ATTENTION: Exploitable remotely/low attack complexity Vendor: Hitachi Energy Equipment: AFS650, AFS660, AFS665, AFS670, AFS675, AFS677, AFR677 Vulnerabilities: Type Confusion, Use After Free, Double Free, Observable Discrepancy 2. RISK EVALUATION Successful exploitation of these vulnerabilities could allow an attacker to create a denial-of-service condition. 3. TECHNICAL DETAILS 3.1 AFFECTED PRODUCTS The following versions of Hitachi Energy AFS/AFR are affected: AFS650: Version 9.1.08 and prior AFS660-C: Version 7.1.05 and prior AFS665-B: Version 7.1.05 and prior AFS670-V2: Version 7.1.05 and prior AFS670: Version 9.1.08 and prior AFS675: Version 9.1.08 and prior AFS677: Version 9.1.08 and prior AFR677: Version 9.1.08 and prior 3.2 Vulnerability Overview 3.2.1 ACCESS OF RESOURCE USING INCOMPATIBLE TYPE ('TYPE CONFUSION') CWE-843 There is a type confusion vulnerability relating to X.400 address processing inside an X.509 GeneralName. X.400 addr...

### Impact An Out-of-bounds Write vulnerability has been found in the ImageSharp gif decoder, allowing attackers to cause a crash using a specially crafted gif. This can potentially lead to denial of service. ### Patches The problem has been patched. All users are advised to upgrade to v3.1.5 or v2.1.9. ### Workarounds None. ### References https://github.com/SixLabors/ImageSharp/pull/2754 https://github.com/SixLabors/ImageSharp/pull/2756

### Impact Users using the `ValidatingResolver` for DNSSEC validation can run into CPU exhaustion with specially crafted DNSSEC-signed zones. ### Patches Users should upgrade to dnsjava v3.6.0 ### Workarounds Although not recommended, only using a non-validating resolver, will remove the vulnerability. ### References https://www.athene-center.de/en/keytrap

### Summary This report details a security vulnerability in Argo CD, where an unauthenticated attacker can send a specially crafted large JSON payload to the /api/webhook endpoint, causing excessive memory allocation that leads to service disruption by triggering an Out Of Memory (OOM) kill. The issue poses a high risk to the availability of Argo CD deployments. ### Details The webhook server always listens to requests. By default, the endpoint doesn't require authentication. It's possible to send a large, malicious request with headers (in this case "X-GitHub-Event: push") that will make ArgoCD start allocating memory to parse the incoming request. Since the request can be constructed client-side without allocating large amounts of memory, it can be arbitrarily large. Eventually, the argocd-server component will get OOMKilled as it consumes all its available memory. The fix would be to enforce a limit on the size of the request being parsed. ### PoC Port-forward to the argocd-serve...