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The Hellcat ransomware group has stolen roughly 5,000 documents, potentially containing confidential information, from the telecom giant's internal database.

### Impact The Heartcore headless client library depends on [Refit ](https://github.com/reactiveui/refit) to assist in making HTTP requests to Heartcore public APIs. Refit recently published an advisory regarding a CRLF injection vulnerability whereby it is possible for a malicious user to smuggle additional headers or potentially body content into a request. This shouldn't affect Heartcore client library usage as the vulnerable method - `HttpHeaders.TryAddWithoutValidation` - is not used. However, since Refit is a transient dependency for applications using this library, then any users making direct use of Refit could be vulnerable. ### Patches The vulnerable version of Refit has been upgraded to a secure version, as of Umbraco.Headless.Client.Net version 1.5.0, available on [Nuget](https://www.nuget.org/packages/Umbraco.Headless.Client.Net/1.5.0). ### Workarounds If calling Refit from your own code, set any necessary HTTP headers without use of `HttpHeaders.TryAddWithoutValidation...

This issue was identified during Quarkslab's audit of the timestamp feature. ### Summary During the timestamp signature generation, the revocation status of the certificate(s) used to generate the timestamp signature was not verified. ### Details During timestamp signature generation, notation-go did not check the revocation status of the certificate chain used by the TSA. This oversight creates a vulnerability that could be exploited through a Man-in-The-Middle attack. An attacker could potentially use a compromised, intermediate, or revoked leaf certificate to generate a malicious countersignature, which would then be accepted and stored by `notation`. ### Impact This could lead to denial of service scenarios, particularly in CI/CD environments during signature verification processes because timestamp signature would fail due to the presence of a revoked certificate(s) potentially disrupting operations.

### Summary The issue was identified during Quarkslab's security audit on the Certificate Revocation List (CRL) based revocation check feature. After retrieving the CRL, notation-go attempts to update the CRL cache using the os.Rename method. However, this operation may fail due to operating system-specific limitations, particularly when the source and destination paths are on different mount points. This failure could lead to an unexpected program termination. ### Details In method `crl.(*FileCache).Set`, a temporary file is created in the OS dedicated area (like /tmp for, usually, Linux/Unix). The file is written and then it is tried to move it to the dedicated `notation` cache directory thanks `os.Rename`. As specified in Go documentation, OS specific restriction may apply. When used with Linux OS, it is relying on `rename` syscall from the libc and as per the [documentation](https://man7.org/linux/man-pages/man2/rename.2.html), moving a file to a different mountpoint raises an `E...

This week on the Lock and Code podcast, we speak with Mallory Knodel about whether AI assistants are compatible with encrypted messaging apps.

This week on the Lock and Code podcast, we speak with Mallory Knodel about whether AI assistants are compatible with encrypted messaging apps.

By focusing on vigilant security practices, responsible AI deployment, and alignment with global regulatory standards, the OSS community can make 2025 a transformative year for security.

Smishing messages that come with instructions to bypass iMessage's protection against links are on the rise

A recently disclosed critical security flaw impacting the Aviatrix Controller cloud networking platform has come under active exploitation in the wild to deploy backdoors and cryptocurrency miners. Cloud security firm Wiz said it's currently responding to "multiple incidents" involving the weaponization of CVE-2024-50603 (CVSS score: 10.0), a maximum severity bug that could result in

SUMMARY Three Russian nationals have been indicted for their alleged roles in running cryptocurrency mixing services Blender.io and…