#mac

North Korean hackers break ground with new exploitation techniques for Windows and macOS.

The security community is still reflecting on the “What If” of the XZ backdoor.

Maliciously-crafted software artifacts can cause denial of service of the machine running Cosign, thereby impacting all services on the machine. The root cause is that Cosign creates slices based on the number of signatures, manifests or attestations in untrusted artifacts. As such, the untrusted artifact can control the amount of memory that Cosign allocates. As an example, these lines demonstrate the problem: https://github.com/sigstore/cosign/blob/286a98a4a99c1b2f32f84b0d560e324100312280/pkg/oci/remote/signatures.go#L56-L70 This `Get()` method gets the manifest of the image, allocates a slice equal to the length of the layers in the manifest, loops through the layers and adds a new signature to the slice. The exact issue is Cosign allocates excessive memory on the lines that creates a slice of the same length as the manifests. ## Remediation Update to the latest version of Cosign, where the number of attestations, signatures and manifests has been limited to a reasonable v...

### Summary A remote image with a malicious attachment can cause denial of service of the host machine running Cosign. This can impact other services on the machine that rely on having memory available such as a Redis database which can result in data loss. It can also impact the availability of other services on the machine that will not be available for the duration of the machine denial. ### Details The root cause of this issue is that Cosign reads the attachment from a remote image entirely into memory without checking the size of the attachment first. As such, a large attachment can make Cosign read a large attachment into memory; If the attachments size is larger than the machine has memory available, the machine will be denied of service. The Go runtime will make a `SIGKILL` after a few seconds of system-wide denial. The root cause is that Cosign reads the contents of the attachments entirely into memory on line 238 below: https://github.com/sigstore/cosign/blob/9bc3ee309bf35...

A machine learning bill of materials (MLBOM) framework can bring transparency, auditability, control, and forensic insight into AI and ML supply chains.

By Uzair Amir Are you interested in cryptocurrency trading but unsure where to start? Have you heard about crypto scalping but… This is a post from HackRead.com Read the original post: Analyzing Bitcoin Price Trends and Crypto Scalping Methods

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 8.8 ATTENTION: Exploitable remotely/low attack complexity Vendor: Siemens Equipment: Telecontrol Server Basic Vulnerabilities: Inadequate Encryption Strength, Double Free, Integer Overflow or Wraparound, External Control of File Name or Path, Path Traversal, Improper Input Validation, Missing Encryption of Sensitive Data, Use After Free, Improper Certificate Validation, Inefficient Regular Expression Complexity, Improper Check for Unusual or Exceptional Conditions, NULL Pointer Dereference, Improper Restriction of Operations within the Bounds of a Memory Buffer 2. RISK EVALUATION Successful exploitation of this vulnerability could 3. TEC...

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 8.2 ATTENTION: Exploitable remotely/low attack complexity Vendor: Siemens Equipment: RUGGEDCOM APE1808 Vulnerabilities: Cross-site Scripting, Improper Privilege Management, Improper Check for Unusual or Exceptional Conditions, Truncation of Security-relevant Information, Insufficient Session Expiration 2. RISK EVALUATION Successful exploitation of these vulnerabilities could allow a malicious administrator to store a JavaScript payload using the web interface, revoke active XML API keys from the firewall and disrupt XML API usage, or cause a denial-of-service. 3. TECHNICAL DETAILS 3.1 AFFECTED PRODUCTS The following versions of Siemens R...

Microsoft has fixed 149 vulnerabilities, two of which are reportedly being exploited in the wild.

Agency encourages broader use of encryption, data-loss prevention, as well as data rights management to safeguard data, networks, and users.