DiscoverSANS Internet Stormcenter Daily Cyber Security Podcast (Stormcast)SANS Stormcast Monday, December 22nd, 2025: TLS Callbacks; FreeBSD RCE; NIST Time Server Issues
SANS Stormcast Monday, December 22nd, 2025: TLS Callbacks; FreeBSD RCE; NIST Time Server Issues

SANS Stormcast Monday, December 22nd, 2025: TLS Callbacks; FreeBSD RCE; NIST Time Server Issues

Update: 2025-12-22
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DLLs & TLS Callbacks

As a follow-up to last week's diary about DLL Entrypoints, Didier is looking at TLS ( Thread Local Storage ) and how it can be abused.

https://isc.sans.edu/diary/DLLs%20%26%20TLS%20Callbacks/32580

FreeBSD Remote code execution via ND6 Router Advertisements

A critical vulnerability in FreeBSD allows for remote code execution. But an attacker must be on the same network.

25:12 .rtsold.asc">https://www.freebsd.org/security/advisories/FreeBSD-SA-25:12 .rtsold.asc

NIST Time Server Problems

The atomic ensemble time scale at the NIST Boulder campus has failed due to a prolonged utility power outage. One impact is that the Boulder Internet Time Services no longer have an accurate time reference.

https://tf.nist.gov/tf-cgi/servers.cgi https://groups.google.com/a/list.nist.gov/g/internet-time-service/c/o0dDDcr1a8I
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SANS Stormcast Monday, December 22nd, 2025: TLS Callbacks; FreeBSD RCE; NIST Time Server Issues

SANS Stormcast Monday, December 22nd, 2025: TLS Callbacks; FreeBSD RCE; NIST Time Server Issues

Dr. Johannes B. Ullrich