Johannes B Ullrich public
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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 minutes 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 Storm Center. You may submit questions and comments via our contact form at https://isc.sans.edu/contact.html .
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Possible exploit variant for CVE-2024-9042 (Kubernetes OS Command Injection) We observed HTTP requests with our honeypot that may be indicative of a new version of an exploit against an older vulnerability. Help us figure out what is going on. https://isc.sans.edu/diary/Possible%20exploit%20variant%20for%20CVE-2024-9042%20%28Kubernetes%20OS%20Comma…
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SANS Stormcast Thursday, December 11th, 2025: Possible CVE-2024-9042 variant; react2shell exploits; notepad++ update hijacking; macOS priv escalation Possible exploit variant for CVE-2024-9042 (Kubernetes OS Command Injection) We observed HTTP requests with our honeypot that may be indicative of a new version of an exploit against an older vulnerab…
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Microsoft Patch Tuesday Microsoft released its regular monthly patch on Tuesday, addressing 57 flaws. https://isc.sans.edu/diary/Microsoft%20Patch%20Tuesday%20December%202025/32550 Adobe Patches Adobe patched five products. The remote code execution in ColdFusion, as well as the code execution issue in Acrobat, will very likely see exploits soon. h…
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SANS Stormcast Wednesday, December 10th, 2025: Microsoft, Adobe, Ivanti, Fortinet, and Ruby patches. Microsoft Patch Tuesday Microsoft released its regular monthly patch on Tuesday, addressing 57 flaws. https://isc.sans.edu/diary/Microsoft%20Patch%20Tuesday%20December%202025/32550 Adobe Patches Adobe patched five products. The remote code execution…
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nanoKVM Vulnerabilities The nanoKVM device updates firmware insecurely; however, the microphone that the authors of the advisory referred to as undocumented may actually be documented in the underlying hardware description. https://www.tomshardware.com/tech-industry/cyber-security/researcher-finds-undocumented-microphone-and-major-security-flaws-in…
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SANS Stormcast Tuesday, December 9th, 2025: nanoKVM Vulnerabilities; Ghostframe Phishing; WatchGuard Advisory nanoKVM Vulnerabilities The nanoKVM device updates firmware insecurely; however, the microphone that the authors of the advisory referred to as "undocumented" may actually be documented in the underlying hardware description. https://www.to…
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AutoIT3 Compiled Scripts Dropping Shellcodes Malicious AutoIT3 scripts are usign the FileInstall function to include additional scripts at compile time that are dropped as temporary files during execution. https://isc.sans.edu/diary/AutoIT3%20Compiled%20Scripts%20Dropping%20Shellcodes/32542 React2Shell Update The race is on to patch vulnerable syst…
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SANS Stormcast Monday, December 8th, 2025: AutoIT3 FileInstall; React2Shell Update; Tika Vuln AutoIT3 Compiled Scripts Dropping Shellcodes Malicious AutoIT3 scripts are usign the "FileInstall" function to include additional scripts at compile time that are dropped as temporary files during execution. https://isc.sans.edu/diary/AutoIT3%20Compiled%20…
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Nation-State Attack or Compromised Government? [Guest Diary] An IP address associated with the Indonesian Government attacked one of our interns' honeypots. https://isc.sans.edu/diary/Nation-State%20Attack%20or%20Compromised%20Government%3F%20%5BGuest%20Diary%5D/32536 React Update Working exploits for the React vulnerability patched yesterday are n…
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SANS Stormcast Friday, December 5th, 2025: Compromised Govt System; React Vuln Update; Array Networks VPN Attacks Nation-State Attack or Compromised Government? [Guest Diary] An IP address associated with the Indonesian Government attacked one of our interns' honeypots. https://isc.sans.edu/diary/Nation-State%20Attack%20or%20Compromised%20Governmen…
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Attempts to Bypass CDNs Our honeypots recently started receiving scans that included CDN specific headers. https://isc.sans.edu/diary/Attempts%20to%20Bypass%20CDNs/32532 React Vulnerability CVE-2025-55182 React patched a critical vulnerability in React server components. Exploitation is likely imminent. https://react.dev/blog/2025/12/03/critical-se…
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SANS Stormcast Thursday, December 4th, 2025: CDN Headers; React Vulnerabiity; PickleScan Patch Attempts to Bypass CDNs Our honeypots recently started receiving scans that included CDN specific headers. https://isc.sans.edu/diary/Attempts%20to%20Bypass%20CDNs/32532 React Vulnerability CVE-2025-55182 React patched a critical vulnerability in React se…
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SmartTube Android App Compromise The key a developer used to sign the Android YouTube player SmartTube was compromised and used to publish a malicious version. https://github.com/yuliskov/SmartTube/issues/5131#issue-3670629826 https://github.com/yuliskov/SmartTube/releases/tag/notification Two Years, 17K Downloads: The NPM Malware That Tried to Gas…
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SANS Stormcast Wednesday, December 3rd, 2025: SmartTube Compromise; NPM Malware Prompt Injection Attempt; Angular XSS Vulnerability SmartTube Android App Compromise The key a developer used to sign the Android YouTube player SmartTube was compromised and used to publish a malicious version. https://github.com/yuliskov/SmartTube/issues/5131#issue-36…
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Hunting for SharePoint In-Memory ToolShell Payloads A walk-through showing how to analyze ToolShell payloads, starting with acquiring packets all the way to decoding embedded PowerShell commands. https://isc.sans.edu/diary/%5BGuest%20Diary%5D%20Hunting%20for%20SharePoint%20In-Memory%20ToolShell%20Payloads/32524 Android Security Bulletin December 20…
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SANS Stormcast Tuesday, December 2nd, 2025: Analyzing ToolShell from Packdets; Android Update; Long Game Malicious Browser Ext. Hunting for SharePoint In-Memory ToolShell Payloads A walk-through showing how to analyze ToolShell payloads, starting with acquiring packets all the way to decoding embedded PowerShell commands. https://isc.sans.edu/diary…
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Fake adult websites pop realistic Windows Update screen to deliver stealers via ClickFix The latest variant of ClickFix tricks users into copy/pasting commands by displaying a fake blue screen of death. https://www.acronis.com/en/tru/posts/fake-adult-websites-pop-realistic-windows-update-screen-to-deliver-stealers-via-clickfix/ B2B Guest Access Cre…
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SANS Stormcast Monday, December 1st, 2025: More ClickFix; Teams Guest Access; Geoserver XXE Vulnerablity Fake adult websites pop realistic Windows Update screen to deliver stealers via ClickFix The latest variant of ClickFix tricks users into copy/pasting commands by displaying a fake blue screen of death. https://www.acronis.com/en/tru/posts/fake-…
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Spyware Allows Cyber Threat Actors to Target Users of Messaging Applications Spyware attacks messaging applications in part by triggering vulnerabilities in messaging applications but also by deploying tools like keystroke loggers and screenshot applications. https://www.cisa.gov/news-events/alerts/2025/11/24/spyware-allows-cyber-threat-actors-targ…
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SANS Stormcast Wednesday, November 26th, 2025: Attacks Against Messaging; Passwords in Random Websites; Fluentbit Vuln; #thanksgiving Spyware Allows Cyber Threat Actors to Target Users of Messaging Applications Spyware attacks messaging applications in part by triggering vulnerabilities in messaging applications but also by deploying tools like key…
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Conflicts between URL mapping and URL based access control. Mapping different URLs to the same script, and relying on URL based authentication at the same time, may lead to dangerous authentication and access control gaps. https://isc.sans.edu/diary/Conflicts%20between%20URL%20mapping%20and%20URL%20based%20access%20control./32518 Sha1-Hulud, The Se…
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SANS Stormcast Tuesday, November 25th, 2025: URL Mapping and Authentication; SHA1-Hulud; Hacklore Conflicts between URL mapping and URL based access control. Mapping different URLs to the same script, and relying on URL based authentication at the same time, may lead to dangerous authentication and access control gaps. https://isc.sans.edu/diary/Co…
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SANS Stormcast Monday, November 24th, 2025: CSS Padding in Phishing; Oracle Identity Manager Scans Update; Use of CSS stuffing as an obfuscation technique? Phishing sites stuff their HTML with benign CSS code. This is likely supposed to throw of simple detection engines https://isc.sans.edu/diary/Use%20of%20CSS%20stuffing%20as%20an%20obfuscation%20…
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Use of CSS stuffing as an obfuscation technique? Phishing sites stuff their HTML with benign CSS code. This is likely supposed to throw of simple detection engines https://isc.sans.edu/diary/Use%20of%20CSS%20stuffing%20as%20an%20obfuscation%20technique%3F/32510 Critical Oracle Identity Manager Flaw Possibly Exploited as Zero-Day Early exploit attem…
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Oracle Identity Manager Exploit Observation from September (CVE-2025-61757) We observed some exploit attempts in September against an Oracle Identity Manager vulnerability that was patched in October, indicating that exploitation may have occurred prior to the patch being released. https://isc.sans.edu/diary/Oracle%20Identity%20Manager%20Exploit%20…
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