#ssl

Ubuntu Security Notice 6696-1 - Yi Yang discovered that the Hotspot component of OpenJDK 8 incorrectly handled array accesses in the C1 compiler. An attacker could possibly use this issue to cause a denial of service, execute arbitrary code or bypass Java sandbox restrictions. It was discovered that the Hotspot component of OpenJDK 8 did not properly verify bytecode in certain situations. An attacker could possibly use this issue to bypass Java sandbox restrictions.

The Red Hat Advanced Cluster Security (RHACS) engineering team is excited to announce the pending release of the latest RHACS version, packed with brand-new features and updates. The team continues to build on the 4.0 major release and RHACS Cloud Service announcements last year with a feature-packed release to kick off 2024. The RHACS 4.4 release will focus on increased consistency of scan results, strengthened security posture management, and more automated security features to alleviate monotonous security tasks.Significant updates include:A new vulnerability scanner termed “Scanner V4”

### Summary With the default configuration of tls-listener, a malicious user can open 6.4 `TcpStream`s a second, sending 0 bytes, and can trigger a DoS. ### Details The default configuration options make any public service using `TlsListener::new()` vulnerable to a slow-loris DoS attack. ```rust /// Default number of concurrent handshakes pub const DEFAULT_MAX_HANDSHAKES: usize = 64; /// Default timeout for the TLS handshake. pub const DEFAULT_HANDSHAKE_TIMEOUT: Duration = Duration::from_secs(10); ``` ### PoC Running the HTTP TLS server example: https://github.com/tmccombs/tls-listener/blob/6c57dea2d9beb1577ae4d80f6eaf03aad4ef3857/examples/http.rs, then running the following script will prevent new connections to the server. ```rust use std::{net::ToSocketAddrs, time::Duration}; use tokio::{io::AsyncReadExt, net::TcpStream, task::JoinSet}; #[tokio::main] async fn main() { const N: usize = 1024; const T: Duration = Duration::from_secs(10); let url = "127.0.0.1:3000"; ...

By Waqas Microsoft's Copilot for Security will be accessible through a pay-as-you-use licensing model. This is a post from HackRead.com Read the original post: Microsoft is Opening AI-Powered “Copilot for Security” to Public

Ubuntu Security Notice 6673-2 - USN-6673-1 provided a security update for python-cryptography. This update provides the corresponding update for Ubuntu 16.04 LTS. Hubert Kario discovered that python-cryptography incorrectly handled errors returned by the OpenSSL API when processing incorrect padding in RSA PKCS#1 v1.5. A remote attacker could possibly use this issue to expose confidential or sensitive information.

Fortinet FortiOS suffers from an out of bounds write vulnerability. Affected includes Fortinet FortiOS versions 7.4.0 through 7.4.2, 7.2.0 through 7.2.6, 7.0.0 through 7.0.13, 6.4.0 through 6.4.14, 6.2.0 through 6.2.15, 6.0.0 through 6.0.17, FortiProxy versions 7.4.0 through 7.4.2, 7.2.0 through 7.2.8, 7.0.0 through 7.0.14, 2.0.0 through 2.0.13, 1.2.0 through 1.2.13, 1.1.0 through 1.1.6, and 1.0.0 through 1.0.7.

This Metasploit module exploits an authentication bypass vulnerability in JetBrains TeamCity. An unauthenticated attacker can leverage this to access the REST API and create a new administrator access token. This token can be used to upload a plugin which contains a Metasploit payload, allowing the attacker to achieve unauthenticated remote code execution on the target TeamCity server. On older versions of TeamCity, access tokens do not exist so the exploit will instead create a new administrator account before uploading a plugin. Older versions of TeamCity have a debug endpoint (/app/rest/debug/process) that allows for arbitrary commands to be executed, however recent version of TeamCity no longer ship this endpoint, hence why a plugin is leveraged for code execution instead, as this is supported on all versions tested.

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 v3 9.8 ATTENTION: Exploitable remotely/low attack complexity Vendor: Siemens Equipment: SIMATIC Vulnerabilities: Improper Restriction of Operations within the Bounds of a Memory Buffer, Improper Input Validation, Missing Encryption of Sensitive Data, Incorrect Permission Assignment for Critical Resource, Expected Behavior Violation, Improper Authentication, Out-of-bounds Write, Use After Free, Inadequate Encryption Strength, Use of Insufficiently Random Values, Incorrect Authorization, Improper Locking, Improper Restriction of Rendered UI Layers or Frames, Improper Privilege Management, Missing Authorization, Cleartext Storage of Sensitive ...

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 8.7 ATTENTION: Exploitable remotely/low attack complexity Vendor: Siemens Equipment: RUGGEDCOM APE1808 Vulnerabilities: Heap-based Buffer Overflow, External Control of File Name or Path, Improper Privilege Management, Uncontrolled Resource Consumption, Improper Certificate Validation, Out-of-bounds Write, Use of Externally-Controlled Format String 2. RISK EVALUATION Successful exploitation of these vulnerabilities could allow an attacker to execute elevated actions, cause a denial-of-service, or execute arbitrary commands or code. 3. TECHNICAL DETAILS 3.1 AFFECTED PRODUCTS The following versions of Siemens RUGGEDCOM APE1808, an applicati...

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 v3 9.8 ATTENTION: Exploitable remotely/low attack complexity Vendor: Siemens Equipment: RUGGEDCOM APE1808 devices Vulnerabilities: Improper Certificate Validation, Cleartext Transmission of Sensitive Information, Path Traversal, Exposure of Sensitive Information to an Unauthorized Actor, Cross-site Scripting, Permissive List of Allowed Inputs, Relative Path Traversal, Improper Restriction of Excessive Authentication Attempts, Use of Externally-Controlled Format String, Access of Uninitialized Pointer, Out-of-bounds Write, Open Redirect, Improper Input Validation, Insertion of Sensitive Information into Log File, Heap-based Buffer Overflow, ...