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SANS Internet Stormcenter Daily Cyber Security Podcast (Stormcast)

Johannes B. Ullrich
SANS Internet Stormcenter Daily Cyber Security Podcast (Stormcast)
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  • SANS Stormcast Friday, May 16th: Increase in Sonicwall Scans; RVTools Compromised?; RountPress
    Web Scanning SonicWall for CVE-2021-20016 - Update Scans for SonicWall increased by an order of magnitude over the last couple of weeks. Many of the attacks appear to originate from Global Host , a low-cost virtual hosting provider. https://isc.sans.edu/diary/Web%20Scanning%20SonicWall%20for%20CVE-2021-20016%20-%20Update/31952 Google Update Patches Exploited Chrome Flaw Google released an update for Chrome. The update fixes two specific flaws reported by external researchers, CVE-2025-4664 and CVE-2025-4609. The first flaw is already being exploited in the wild. https://chromereleases.googleblog.com/2025/05/stable-channel-update-for-desktop_14.html https://x.com/slonser_/status/1919439373986107814 RVTools Bumblebee Malware Attack Zerodaylabs published its analysis of the RV-Tools Backdoor attack. It suggests that this may not be solely a search engine optimization campaign directing victims to the malicious installer, but that the RVTools distribution site was compromised. https://zerodaylabs.net/rvtools-bumblebee-malware/ Operation RoundPress ESET Security wrote up a report summarizing recent XSS attacks against open-source webmail systems https://www.welivesecurity.com/en/eset-research/operation-roundpress/
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  • SANS Stormcast Thursday, May 15th: Google Open Redirects; Adobe, Ivanti, and Samsung patches
    Another day, another phishing campaign abusing google.com open redirects Google s links from it s maps page to hotel listings do suffer from an open redirect vulnerability that is actively exploited to direct users to phishing pages. https://isc.sans.edu/diary/Another%20day%2C%20another%20phishing%20campaign%20abusing%20google.com%20open%20redirects/31950 Adobe Patches Adobe patched 12 different applications. Of particular interest is the update to ColdFusion, which fixes several arbitrary code execution and arbitrary file read problems. https://helpx.adobe.com/security/security-bulletin.html Samsung Patches magicInfo 9 Again Samsung released a new patch for the already exploited magicInfo 9 CMS vulnerability. While the description is identical to the patch released last August, a new CVE number is used. https://security.samsungtv.com/securityUpdates#SVP-MAY-2025 Ivanti Patches Critical Ivanti Neurons Flaw Ivanti released a patch for Ivanti Neurons for ITSM (on-prem only) fixing a critical authentication bypass vulnerability. Ivanti also points to its guidance to secure the underlying IIS server to make exploitation of flaws like this more difficult
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  • SANS Stormcast Wednesday, May 14th: Microsoft Patch Tuesday; 0-Days patched for Ivanti Endpoint Manager and Fortinet Products
    Microsoft Patch Tuesday Microsoft patched 70-78 vulnerabilities (depending on how you count them). Five of these vulnerabilities are already being exploited. In particular, a remote code execution vulnerability in the scripting engine should be taken seriously. It requires the Microsoft Edge browser to run in Internet Explorer mode. https://isc.sans.edu/diary/Microsoft%20Patch%20Tuesday%3A%20May%202025/31946 Security Advisory Ivanti Endpoint Manager Mobile (EPMM) May 2025 (CVE-2025-4427 and CVE-2025-4428) Ivanti patched an authentication bypass vulnerability and a remote code execution vulnerability. The authentication bypass can exploit the remote code execution vulnerability without authenticating first. https://forums.ivanti.com/s/article/Security-Advisory-Ivanti-Endpoint-Manager-Mobile-EPMM?language=en_US Fortinet Patches Exploited Vulnerability in API (CVE-2025-32756) Fortinet patched an already exploited stack-based buffer overflow vulnerability in the API of multiple Fortinet products. The vulnerability is exploited via crafted HTTP requests. https://fortiguard.fortinet.com/psirt/FG-IR-25-254
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  • SANS Stormcast Tuesday, May 12th: Apple Patches; Unipi Technologies Scans;
    Apple Updates Everything Apple patched all of its operating systems. This update ports a patch for a recently exploited vulnerability to older versions of iOS and macOS. https://isc.sans.edu/diary/31942 It Is 2025, And We Are Still Dealing With Default IoT Passwords And Stupid 2013 Router Vulnerabilities Versions of the Mirai botnet are attacking devices made by Unipi Technology. These devices are using a specific username and password combination. In addition, this version of the Mirai botnet will also attempt exploits against an old Netgear vulnerability. https://isc.sans.edu/diary/It%20Is%202025%2C%20And%20We%20Are%20Still%20Dealing%20With%20Default%20IoT%20Passwords%20And%20Stupid%202013%20Router%20Vulnerabilities/31940 Output Messenger Vulnerability The internal messenger application Output Messenger is currently used in sophisticated attacks. Attackers are exploiting a path traversal vulnerability that has not been fixed. https://www.outputmessenger.com/cve-2025-27920/ Commvault Correction Commvault s patch indeed fixes the recent vulnerability. The Pioneer Release Will Dormann used to experiment will only offer patches after it has been registered, which leads to an error when assessing the patch s efficacy. https://www.darkreading.com/application-security/commvault-patch-works-as-intended
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  • SANS Stormcast Monday, May 11th: Steganography Challenge; End-of-Life Routers; ASUS Driverhub; RV-Tools SEO Poisoning
    Steganography Challenge Didier revealed the solution to last weekend s cryptography challenge. The image used the same encoding scheme as Didier described before, but the columns and rows were transposed. https://isc.sans.edu/forums/diary/Steganography%20Challenge%3A%20My%20Solution/31912/ FBI Warns of End-of-life routers The FBI is tracking larger botnets taking advantage of unpatched routers. Many of these routers are end-of-life, and no patches are available for the exploited vulnerabilities. The attackers are turning the devices into proxies, which are resold for various criminal activities. https://www.ic3.gov/PSA/2025/PSA250507 ASUS Driverhub Vulnerability ASUS Driverhub software does not properly check the origin of HTTP requests, allowing a CSRF attack from any website leading to arbitrary code execution. https://mrbruh.com/asusdriverhub/ RV-Tools SEO Poisoning Varonis Threat Labs observed SEO poisoning being used to trick system administrators into installing a malicious version of RV Tools. The malicious version includes a remote access tool leading to the theft of credentials https://www.varonis.com/blog/seo-poisoning#initial-access-and-persistence
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Über SANS Internet Stormcenter Daily Cyber Security Podcast (Stormcast)

A brief daily summary of what is important in information security. The podcast is published every weekday and designed to get you ready for the day with a brief, usually 5 minute long, summary of current network security related events. The content is late breaking, educational and based on listener input as well as on input received by the SANS Internet Stormcenter. You may submit questions and comments via our contact form at https://isc.sans.edu/contact.html .
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