#dos

A denial of service vulnerability has been discovered in the resolv gem bundled with Ruby. ## Details The vulnerability is caused by an insufficient check on the length of a decompressed domain name within a DNS packet. An attacker can craft a malicious DNS packet containing a highly compressed domain name. When the resolv library parses such a packet, the name decompression process consumes a large amount of CPU resources, as the library does not limit the resulting length of the name. This resource consumption can cause the application thread to become unresponsive, resulting in a Denial of Service condition. ## Affected Version The vulnerability affects the resolv gem bundled with the following Ruby series: * Ruby 3.2 series: resolv version 0.2.2 and earlier * Ruby 3.3 series: resolv version 0.3.0 * Ruby 3.4 series: resolv version 0.6.1 and earlier ## Credits Thanks to Manu for discovering this issue. ## History Originally published at 2025-07-08 07:00:00 (UTC)

View CSAF 1. EXECUTIVE SUMMARY CVSS v4 8.2 ATTENTION: Exploitable remotely/low attack complexity Vendor: ABB Equipment: RMC-100 Vulnerabilities: Use of Hard-coded Cryptographic Key, Stack-based Buffer Overflow 2. RISK EVALUATION Successful exploitation of these vulnerabilities could allow an attacker to gain unauthenticated access to the MQTT configuration data, cause a denial-of-service condition on the MQTT configuration web server (REST interface), or decrypt encrypted MQTT broker credentials. 3. TECHNICAL DETAILS 3.1 AFFECTED PRODUCTS ABB reports the following versions of RMC-100 with the REST interface are affected. The vulnerabilities are only present when the REST interface is enabled. This interface is disabled by default: RMC-100: 2105457-043 through 2105457-045 RMC-100 LITE: 2106229-015 through 2106229-016 3.2 VULNERABILITY OVERVIEW 3.2.1 USE OF HARD-CODED CRYPTOGRAPHIC KEY CWE-321 When the REST interface is enabled by the user, and an attacker gains access to the source code...

py-libp2p before 0.2.3 allows a peer to cause a denial of service (resource consumption) via a large RSA key.

A Regular Expression Denial of Service (ReDoS) vulnerability was discovered in the Hugging Face Transformers library, specifically within the DonutProcessor class's `token2json()` method. This vulnerability affects versions 4.51.3 and earlier, and is fixed in version 4.52.1. The issue arises from the regex pattern `<s_(.*?)>` which can be exploited to cause excessive CPU consumption through crafted input strings due to catastrophic backtracking. This vulnerability can lead to service disruption, resource exhaustion, and potential API service vulnerabilities, impacting document processing tasks using the Donut model.

Connect2id Nimbus JOSE + JWT before 10.0.2 allows a remote attacker to cause a denial of service via a deeply nested JSON object supplied in a JWT claim set, because of uncontrolled recursion. NOTE: this is independent of the Gson 2.11.0 issue because the Connect2id product could have checked the JSON object nesting depth, regardless of what limits (if any) were imposed by Gson.

Uncontrolled Resource Consumption vulnerability in Apache Tomcat if an HTTP/2 client did not acknowledge the initial settings frame that reduces the maximum permitted concurrent streams. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.8, from 10.1.0-M1 through 10.1.42, from 9.0.0.M1 through 9.0.106. Users are recommended to upgrade to version 11.0.9, 10.1.43 or 9.0.107, which fix the issue.

### Impact The HTTP Gateway processes headers, but with no timeout set. With a Slowloris attack, an attacker could cause Denial of Service (DoS). Exploitation does not require authentication nor authorization, so anyone can exploit it. It should nonetheless not be exploitable as it is highly recommended to bury Chall-Manager deep within the infrastructure due to its large capabilities, so no users could reach the system. ### Patches Patch has been implemented by [commit `1385bd8`](https://github.com/ctfer-io/chall-manager/commit/1385bd869142651146cd0b123085f91cec698636) and shipped in [`v0.1.4`](https://github.com/ctfer-io/chall-manager/releases/tag/v0.1.4). ### Workarounds No workaround exist. ### References N/A

As of January 10, 2023, CISA will no longer be updating ICS security advisories for Siemens product vulnerabilities beyond the initial advisory. For the most up-to-date information on vulnerabilities in this advisory, please see Siemens' ProductCERT Security Advisories (CERT Services | Services | Siemens Global). View CSAF 1. EXECUTIVE SUMMARY CVSS v4 5.3 ATTENTION: Exploitable remotely/low attack complexity Vendor: Siemens Equipment: Project-Server and TIA Portal Vulnerability: Unrestricted Upload of File with Dangerous Type 2. RISK EVALUATION Successful exploitation of this vulnerability could allow an attacker to cause a denial-of-service condition. 3. TECHNICAL DETAILS 3.1 AFFECTED PRODUCTS Siemens reports that the following products are affected: TIA Project-Server: Versions prior to V2.1.1 TIA Project-Server V17: All versions Totally Integrated Automation Portal (TIA Portal) V17: All versions Totally Integrated Automation Portal (TIA Portal) V18: All versions Totally Integrated A...

As of January 10, 2023, CISA will no longer be updating ICS security advisories for Siemens product vulnerabilities beyond the initial advisory. For the most up-to-date information on vulnerabilities in this advisory, please see Siemens' ProductCERT Security Advisories (CERT Services | Services | Siemens Global). View CSAF 1. EXECUTIVE SUMMARY CVSS v4 7.1 ATTENTION: Exploitable remotely/low attack complexity Vendor: Siemens Equipment: SIMATIC CN 4100 Vulnerability: Improper Input Validation 2. RISK EVALUATION Successful exploitation of this vulnerability could allow an attacker to cause a denial-of-service condition. 3. TECHNICAL DETAILS 3.1 AFFECTED PRODUCTS Siemens reports that the following products are affected: SIMATIC CN 4100: All versions prior to V4.0 3.2 VULNERABILITY OVERVIEW 3.2.1 IMPROPER INPUT VALIDATION CWE-20 The affected application allows to control the device by storing arbitrary files in the SFTP folder of the device. This could allow an attacker to cause a denial-of...

View CSAF 1. EXECUTIVE SUMMARY CVSS v4 8.7 ATTENTION: Exploitable remotely/low attack complexity Vendor: Advantech Equipment: iView Vulnerabilities: Cross-site Scripting, SQL Injection, Path Traversal, Argument Injection. 2. RISK EVALUATION Successful exploitation of these vulnerabilities could allow an attacker to disclose sensitive information, achieve remote code execution, or cause service disruptions. 3. TECHNICAL DETAILS 3.1 AFFECTED PRODUCTS The following Advantech products are affected: iView: Versions prior to 5.7.05 build 7057 3.2 VULNERABILITY OVERVIEW 3.2.1 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') CWE-79 A vulnerability exists in Advantech iView versions prior to 5.7.05 build 7057, which could allow a reflected cross-site scripting (XSS) attack. By exploiting this flaw, an attacker could execute unauthorized scripts in the user's browser, potentially leading to information disclosure or other malicious activities. CVE-2025-53397 h...