SANS Internet Stormcenter Daily Cyber Security Podcast (Stormcast)

Copyright: © (c) SANS Institute 2024 This work is licensed under a Creative Commons License - Attribution-NonCommercial-ShareAlike - https://creativecommons.org/licenses/by-nc-sa/4.0/

Latest Episodes:

SANS Stormcast Tuesday, August 19th, 2025: MFA Bombing; Cisco Firewall Management Vuln; F5 Access for Android Vuln; Aug 19, 2025

Show notes

Keeping an Eye on MFA Bombing Attacks
Attackers will attempt to use authentication fatigue by bombing users with MFA authentication requests. Rob is talking in this diary about how to investigate these attacks in a Microsoft ecosystem.
https://isc.sans.edu/diary/Keeping+an+Eye+on+MFABombing+Attacks/32208
Critical Cisco Secure Firewall Management Center Software RADIUS Remote Code Execution Vulnerability
An OS command injection vulnerability may be abused to gain access to the Cisco Secure Firewall Management Center software.
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-fmc-radius-rce-TNBKf79
F5 Access for Android vulnerability
An attacker with a network position that allows them to intercept network traffic may be able to read and/or modify data in transit. The attacker would need to intercept vulnerable clients specifically, since other clients would detect the man-in-the-middle (MITM) attack.
https://my.f5.com/manage/s/article/K000152049

SANS Stormcast Monday, August 18th, 2025: 5G Attack Framework; Plex Vulnerability; Fortiweb Exploit; Flowise Vuln Aug 18, 2025

Show notes

SNI5GECT: Sniffing and Injecting 5G Traffic Without Rogue Base Stations
Researchers from the Singapore University of Technology and Design released a new framework, SNI5GECT, to passively sniff and inject traffic into 5G data streams, leading to DoS, downgrade and other attacks.
https://isc.sans.edu/diary/SNI5GECT%3A%20Sniffing%20and%20Injecting%205G%20Traffic%20Without%20Rogue%20Base%20Stations/32202
Plex Vulnerability
Plex patched a vulnerability in the Plex Media Server. Make sure you have updated to at least 1.42.1.
https://forums.plex.tv/t/plex-media-server-security-update/928341
FortiWeb Exploit Public
A security researcher published details about the recent FortiWeb vulnerability, including demonstrating a PoC exploit.
https://www.bleepingcomputer.com/news/security/researcher-to-release-exploit-for-full-auth-bypass-on-fortiweb/
Flowise OS vulnerability
https://research.jfrog.com/vulnerabilities/flowise-os-command-remote-code-execution-jfsa-2025-001380578/

SANS Stormcast Friday, August 15th, 2025: Analysing Attack with AI; Proxyware via YouTube; Xerox FreeFlow Vuln; Evaluating Zero Trust @SANS_edu Aug 15, 2025

Show notes

AI and Faster Attack Analysis
A few use cases for LLMs to speed up analysis
https://isc.sans.edu/diary/AI%20and%20Faster%20Attack%20Analysis%20%5BGuest%20Diary%5D/32198
Proxyware Malware Being Distributed on YouTube Video Download Site
Popular YouTube download sites will attempt to infect users with proxyware.
https://asec.ahnlab.com/en/89574/
Xerox Freeflow Core Vulnerability
Horizon3.ai discovered XXE Injection (CVE-2025-8355) and Path Traversal (CVE-2025-8356) vulnerabilities in Xerox FreeFlow Core, a print orchestration platform. These vulnerabilities are easily exploitable and enable unauthenticated remote attackers to achieve remote code execution on vulnerable FreeFlow Core instances.
https://horizon3.ai/attack-research/attack-blogs/from-support-ticket-to-zero-day/
SANS.edu Research: Darren Carstensen Evaluating Zero Trust Network Access: A Framework for Comparative Security Testing
Not all Zero Trust Network Access (ZTNA) solutions are created equal, and despite bold marketing claims, many fall short of delivering proper Zero Trust security.
https://www.sans.edu/cyber-research/evaluating-zero-trust-network-access-framework-comparative-security-testing/

SANS Stormcast Thursday, August 14th, 2025: Equation Editor; Kerberos Patch; XZ-Utils Backdoor; ForitSIEM/FortiWeb patches Aug 14, 2025

Show notes

CVE-2017-11882 Will Never Die
The (very) old equation editor vulnerability is still being exploited, as this recent sample analyzed by Xavier shows. The payload of the Excel file attempts to download and execute an infostealer to exfiltrate passwords via email.
https://isc.sans.edu/diary/CVE-2017-11882%20Will%20Never%20Die/32196
Windows Kerberos Elevation of Privilege Vulnerability
Yesterday, Microsoft released a patch for a vulnerability that had already been made public. This vulnerability refers to the privilege escalation taking advantage of a path traversal issue in Windows Kerberos affecting Exchange Server in hybrid mode.
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-53779
Persistent Risk: XZ Utils Backdoor Still Lurking in Docker Images
Some old Debian Docker images containing the xz-utils backdoor are still available for download from Docker Hub via the official Debian account.
https://www.binarly.io/blog/persistent-risk-xz-utils-backdoor-still-lurking-in-docker-images
FortiSIEM / FortiWeb Vulnerablities
Fortinet patched already exploited vulnerabilities in FortiWeb and FortiSIEM
https://fortiguard.fortinet.com/psirt/FG-IR-25-152
https://fortiguard.fortinet.com/psirt/FG-IR-25-448

SANS Stormcast Wednesday, August 13th, 2025: Microsoft Patch Tuesday; libarchive vulnerability upgrade; Adobe Patches Aug 13, 2025

Show notes

Microsoft Patch Tuesday
https://isc.sans.edu/diary/Microsoft%20August%202025%20Patch%20Tuesday/32192
https://cymulate.com/blog/zero-click-one-ntlm-microsoft-security-patch-bypass-cve-2025-50154/
libarchive Vulnerability
A libarchive vulnerability patched in June was upgraded from a low CVSS score to a critical one. Libarchive is used by compression software across various operating systems, making this a difficult vulnerability to patch
https://www.freebsd.org/security/advisories/FreeBSD-SA-25:07.libarchive.asc
Adobe Patches
Adobe released patches for 13 different products.
https://helpx.adobe.com/security/Home.html

SANS Stormcast Tuesday, August 12th, 2025: Erlang OTP SSH Exploits (Palo Alto Networks); Winrar Exploits; Netscaler Exploits; OpenSSH Pushing PQ Crypto; Aug 12, 2025

Show notes

Erlang OTP SSH Exploits
A recently patched and easily exploited vulnerability in Erlang/OTP SSH is being exploited. Palo Alto collected some of the details about this exploit activity that they observed.
https://unit42.paloaltonetworks.com/erlang-otp-cve-2025-32433/
WinRAR Exploited
WinRAR vulnerabilities are actively being exploited by a number of threat actors. The vulnerability allows for the creation of arbitrary files as the archive is extracted.
https://thehackernews.com/2025/08/winrar-zero-day-under-active.html
Citrix Netscaler Exploit Updates
The Dutch Center for Cyber Security is updating its guidance on recent Citrix Netscaler attacks. Note that the attacks started before a patch became available, and attackers are actively hiding their tracks to make it more difficult to detect a compromise.
https://www.ncsc.nl/actueel/nieuws/2025/07/22/casus-citrix-kwetsbaarheid https://www.bleepingcomputer.com/news/security/netherlands-citrix-netscaler-flaw-cve-2025-6543-exploited-to-breach-orgs/
OpenSSH Post Quantum Encryption
Starting in version 10.1, OpenSSH will warn users if they are using quantum-unsafe algorithms
https://www.openssh.com/pq.html

SANS Stormcast Monday, August 11th, 2025: Fake Tesla Preorders; Bad USB Cameras; Win-DoS Epidemic Aug 11, 2025

Show notes

Google Paid Ads for Fake Tesla Websites
Someone is setting up fake Tesla lookalike websites that attempt to collect credit card data from unsuspecting users trying to preorder Tesla products.
https://isc.sans.edu/diary/Google%20Paid%20Ads%20for%20Fake%20Tesla%20Websites/32186
Compromising USB Devices for Persistent Stealthy Access
USB devices, like Linux-based web cams, can be compromised to emulate malicious USB devices like keyboards that inject malicious commands.
https://eclypsium.com/blog/badcam-now-weaponizing-linux-webcams/
Win-DoS Epidemic: A crash course in abusing RPC for Win-DoS & Win-DDoS
Internet-exposed DCs can be used in very powerful DoS attacks.
https://defcon.org/html/defcon-33/dc-33-speakers.html#content_60389

SANS Stormcast Friday, August 8th, 2025:: ASN43350 Mass Scans; HTTP1.1 Must Die; Hyprid Exchange Vuln; Sonicwall Update; SANS.edu Research: OSS Security and Shifting Left Aug 08, 2025

Show notes

Mass Internet Scanning from ASN 43350
Our undergraduate intern Duncan Woosley wrote up aggressive scans from ASN 43350
https://isc.sans.edu/diary/Mass+Internet+Scanning+from+ASN+43350+Guest+Diary/32180/#comments
HTTP/1.1 Desync Attacks
Portswigger released details about new types of HTTP/1.1 desync attacks it uncovered. These attacks are particularly critical for organizations using middleboxes to translate from HTTP/2 to HTTP/1.1
https://portswigger.net/research/http1-must-die
Microsoft Warns of Exchange Server Vulnerability
An attacker with admin access to an Exchange Server in a hybrid configuration can use this vulnerability to gain full domain access. The issue is mitigated by an April hotfix, but was not noted in the release of the April Hotfix.
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-53786
Sonicwall Update
Sonicwall no longer believes that a new vulnerability was used in recent compromises
https://www.sonicwall.com/support/notices/gen-7-and-newer-sonicwall-firewalls-sslvpn-recent-threat-activity/250804095336430
SANS.edu Research: Wellington Rampazo, Shift Left the Awareness and Detection of Developers Using Vulnerable Open-Source Software Components
https://www.sans.edu/cyber-research/shift-left-awareness-detection-developers-using-vulnerable-open-source-software-components/

SANS Stormcast Thursday, August 7th, 2025: Sextortion Update; Adobe and Trend Micro release emergency patches Aug 07, 2025

Show notes

Do Sextortion Scams Still Work in 2025?
Jan looked at recent sextortion emails to check if any of the crypto addresses in these emails received deposits. Sadly, some did, so these scams still work.
https://isc.sans.edu/diary/Do%20sextortion%20scams%20still%20work%20in%202025%3F/32178
Akira Ransomware Group s use of Drivers
Guidepoint Security observed the Akira ransomware group using specific legitimate drivers for privilege escalation
https://www.guidepointsecurity.com/blog/gritrep-akira-sonicwall/
Adobe Patches Critical Experience Manager Vulnerability
Adobe released emergency patches for a vulnerability in Adobe Experience Manager after a PoC exploit was made public.
https://slcyber.io/assetnote-security-research-center/struts-devmode-in-2025-critical-pre-auth-vulnerabilities-in-adobe-experience-manager-forms/
https://helpx.adobe.com/security/products/aem-forms/apsb25-82.html
Trend Micro Apex One Vulnerability
Trend Micro released an emergency patch for an actively exploited pre-authentication remote code execution vulnerability in the Apex One management console.
https://success.trendmicro.com/en-US/solution/KA-0020652

SANS Stormcast Wednesday, August 6th, 2025: Machinekeys and VIEWSTATEs; Perplexity Unethical Learning; SonicWall Updates Aug 06, 2025

Show notes

Stealing Machinekeys for fun and profit (or riding the SharePoint wave)
Bojan explains in detail how .NET uses Machine Keys to protect the VIEWSTATE, and how to abuse the VIEWSTATE for code execution if the Machine Keys are lost.
https://isc.sans.edu/diary/Stealing%20Machine%20Keys%20for%20fun%20and%20profit%20%28or%20riding%20the%20SharePoint%20wave%29/32174
Perplexity is using stealth, undeclared crawlers to evade website no-crawl directives
Perplexity will change its User Agent, or use different originating IP addresses, if it detects being blocked from scanning websites
https://blog.cloudflare.com/perplexity-is-using-stealth-undeclared-crawlers-to-evade-website-no-crawl-directives/
Gen 7 SonicWall Firewalls SSLVPN Recent Threat Activity
Over the past 72 hours, there has been a notable increase in both internally and externally reported cyber incidents involving Gen 7 SonicWall firewalls where SSLVPN is enabled.
https://www.sonicwall.com/support/notices/gen-7-sonicwall-firewalls-sslvpn-recent-threat-activity/250804095336430

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