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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SANS Stormcast Monday, July 14th, 2025: Web Honeypot Log Volume; Browser Extension Malware; RDP Forensics
DShield Honeypot Log Volume Increase Within the last few months, there has been a dramatic increase in honeypot log volumes and how often these high volumes are seen. This has not just been from Jesse s residential honeypot, which has historically seen higher log volumes, but from all of the honeypots that Jesse runs. https://isc.sans.edu/diary/DShield+Honeypot+Log+Volume+Increase/32100 Google and Microsoft Trusted Them. 2.3 Million Users Installed Them. They Were Malware. Koi Security s investigation of a single verified color picker exposed a coordinated campaign of 18 malicious extensions that infected a massive 2.3 million users across Chrome and Edge. https://blog.koi.security/google-and-microsoft-trusted-them-2-3-million-users-installed-them-they-were-malware-fb4ed4f40ff5 RDP Forensics Comprehensive overview of Windows RDP Forensics https://medium.com/@mathias.fuchs/chasing-ghosts-over-rdp-lateral-movement-in-tiny-bitmaps-328d2babd8ec
SANS Stormcast Monday, July 14th, 2025: Suspect Domain Feed; Wing FTP Exploited; FortiWeb Exploited; NVIDIA GPU Rowhammer
Experimental Suspicious Domain Feed Our new experimental suspicious domain feed uses various criteria to identify domains that may be used for phishing or other malicious purposes. https://isc.sans.edu/diary/Experimental%20Suspicious%20Domain%20Feed/32102 Wing FTP Server RCE Vulnerability Exploited CVE-2025-47812 Huntress saw active exploitation of Wing FTP Server remote code execution (CVE-2025-47812) on a customer on July 1, 2025. Organizations running Wing FTP Server should update to the fixed version, version 7.4.4, as soon as possible. https://www.huntress.com/blog/wing-ftp-server-remote-code-execution-cve-2025-47812-exploited-in-wild https://www.rcesecurity.com/2025/06/what-the-null-wing-ftp-server-rce-cve-2025-47812/ FortiWeb Pre-Auth RCE (CVE-2025-25257) An exploit for the FortiWeb RCE Vulnerability is now available and is being used in the wild. https://pwner.gg/blog/2025-07-10-fortiweb-fabric-rce NVIDIA Vulnerable to Rowhammer NVIDIA has received new research related to the industry-wide DRAM issue known as Rowhammer . The research demonstrates a potential Rowhammer attack against an NVIDIA A6000 GPU with GDDR6 Memory. The purpose of this notice is to reinforce already known mitigations to Rowhammer attacks. https://nvidia.custhelp.com/app/answers/detail/a_id/5671/~/security-notice%3A-rowhammer---july-2025
SANS Stormcast Friday, July 11th, 2025: SSH Tunnel; FortiWeb SQL Injection; Ruckus Unpatched Vuln; Missing Motherboard Patches;
SSH Tunneling in Action: direct-tcp requests Attackers are compromising ssh servers to abuse them as relays. The attacker will configure port forwarding direct-tcp connections to forward traffic to a victim. In this particular case, the Yandex mail server was the primary victim of these attacks. https://isc.sans.edu/diary/SSH%20Tunneling%20in%20Action%3A%20direct-tcp%20requests%20%5BGuest%20Diary%5D/32094 Fortiguard FortiWeb Unauthenticated SQL injection in GUI (CVE-2025-25257) An improper neutralization of special elements used in an SQL command ('SQL Injection') vulnerability [CWE-89] in FortiWeb may allow an unauthenticated attacker to execute unauthorized SQL code or commands via crafted HTTP or HTTPs requests. https://www.fortiguard.com/psirt/FG-IR-25-151 Ruckus Virtual SmartZone (vSZ) and Ruckus Network Director (RND) contain multiple vulnerabilities Ruckus products suffer from a number of critical vulnerabilities. There is no patch available, and users are advised to restrict access to the vulnerable admin interface. https://kb.cert.org/vuls/id/613753
SANS Stormcast Thursday, July 10th, 2025: Internal CA with ACME; TapJacking on Android; Adobe Patches;
Setting up Your Own Certificate Authority for Development: Why and How. Some tips on setting up your own internal certificate authority using the smallstep CA. https://isc.sans.edu/diary/Setting%20up%20Your%20Own%20Certificate%20Authority%20for%20Development%3A%20Why%20and%20How./32092 Animation-Driven Tapjacking on Android Attackers can use a click-jacking like trick to trick victims into clicking on animated transparent dialogs opened from other applications. https://taptrap.click/usenix25_taptrap_paper.pdf Adobe Patches Adobe patched 13 different products yesterday. Most concerning are vulnerabilities in Coldfusion that include code execution and arbitrary file disclosure vulnerabilities. https://helpx.adobe.com/security/security-bulletin.html
SANS Stormcast Wednesday, July 9th, 2025: Microsoft Patches; Opposum Attack;
Microsoft Patch Tuesday, July 2025 Today, Microsoft released patches for 130 Microsoft vulnerabilities and 9 additional vulnerabilities not part of Microsoft's portfolio but distributed by Microsoft. 14 of these are rated critical. Only one of the vulnerabilities was disclosed before being patched, and none of the vulnerabilities have so far been exploited. https://isc.sans.edu/diary/Microsoft%20Patch%20Tuesday%2C%20July%202025/32088 Opposum Attack If a TLS server is configured to allow switching from HTTP to HTTPS on a specific port, an attacker may be able to inject a request into the data stream. https://opossum-attack.com/ Ivanti Security Updates Ivanty fixed vulnerabilities in Ivanty Connect Secure, EPMM, and EPM. In particular the password decryption vulnerabliity may be interesting. https://www.ivanti.com/blog/july-security-update-2025
SANS Stormcast Tuesday, July 8th, 2025: Detecting Filename (Windows); Atomic Stealer now with Backdoor; SEO Scams
What s My File Name Malware may use the GetModuleFileName API to detect if it was renamed to a name typical for analysis, like sample.exe or malware.exe https://isc.sans.edu/diary/What%27s%20My%20%28File%29Name%3F/32084 Atomic macOS infostealer adds backdoor for persistent attacks Malware analyst discovered a new version of the Atomic macOS info-stealer (also known as 'AMOS') that comes with a backdoor, to attackers persistent access to compromised systems. https://moonlock.com/amos-backdoor-persistent-access HOUKEN SEEKING A PATH BY LIVING ON THE EDGE WITH ZERO-DAYS At the beginning of September 2024, an attacker repeatedly exploited vulnerabilities CVE-2024- 8190, CVE-2024-8963, and CVE-2024-9380 vulnerabilities to remotely execute arbitrary code on vulnerable Ivanti Cloud Service Appliance devices. https://www.cert.ssi.gouv.fr/uploads/CERTFR-2025-CTI-009.pdf SEO Scams Targeting Putty, WinSCP, and AI Tools Paid Google ads are advertising trojaned versions of popuplar tools like ssh and winscp https://arcticwolf.com/resources/blog-uk/malvertising-campaign-delivers-oyster-broomstick-backdoor-via-seo-poisoning-and-trojanized-tools/
SANS Stormcast Monday, July 7th, 2025: interesting usernames; More sudo issues; CitrixBleed2 PoC; Short Lived Certs
Interesting ssh/telnet usernames Some interesting usernames observed in our honeypots https://isc.sans.edu/diary/A%20few%20interesting%20and%20notable%20ssh%20telnet%20usernames/32080 More sudo trouble The host option in Sudo can be exploited to execute commands on unauthorized hosts. https://www.stratascale.com/vulnerability-alert-CVE-2025-32462-sudo-host CitrixBleed2 PoC Posted (CVE-2025-5777) WatchTwer published additional details about the recently patched CitrixBleed vulnerability, including a PoC exploit. https://labs.watchtowr.com/how-much-more-must-we-bleed-citrix-netscaler-memory-disclosure-citrixbleed-2-cve-2025-5777/ Instagram Using Six Day Certificates Instagram changes their TLS certificates daily and they use certificates that are just about to expire in a week. https://hereket.com/posts/instagram-single-day-certificates/
SANS Stormcast Thursday July 3rd, 2025: sudo problems; polymorphic zip files; cisco vulnerablity
Sudo chroot Elevation of Privilege The sudo chroot option can be leveraged by any local user to elevate privileges to root, even if no sudo rules are defined for that user. https://www.stratascale.com/vulnerability-alert-CVE-2025-32463-sudo-chroot Polymorphic ZIP Files A zip file with a corrupt End of Central Directory Record may extract different data depending on the tool used to extract the files. https://hackarcana.com/article/yet-another-zip-trick Cisco Unified Communications Manager Static SSH Credentials Vulnerability A vulnerability in Cisco Unified Communications Manager (Unified CM) and Cisco Unified Communications Manager Session Management Edition (Unified CM SME) could allow an unauthenticated, remote attacker to log in to an affected device using the root account, which has default, static credentials that cannot be changed or deleted. https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cucm-ssh-m4UBdpE7
SANS Stormcast Monday June 30th, 2025: Scattered Spider; AMI BIOS Exploited; Secure Boot Certs Expiring; Microsoft Resliliency Initiative
Scattered Spider Update The threat actor known as Scattered Spider is in the news again, this time focusing on airlines. But the techniques used by Scattered Spider, social engineering, are still some of the most dangerous techniques used by various threat actors. https://cloud.google.com/blog/topics/threat-intelligence/unc3944-proactive-hardening-recommendations?e=48754805 AMI BIOS Vulnerability Exploited CVE-2024-54085 A vulnerability in the Redfish remote access software, including AMI s BIOS, is now being exploited. https://go.ami.com/hubfs/Security%20Advisories/2025/AMI-SA-2025003.pdf https://eclypsium.com/blog/ami-megarac-vulnerabilities-bmc-part-3/ Act now: Secure Boot certificates expire in June 2026 The Microsoft certificates used in Secure Boot are the basis of trust for operating system security, and all will be expiring beginning June 2026. https://techcommunity.microsoft.com/blog/windows-itpro-blog/act-now-secure-boot-certificates-expire-in-june-2026/4426856 The Windows Resiliency Initiative: Building resilience for a future-ready enterprise Microsoft announced more details about its future security and resilience strategy for Windows. In particular, security tools will no longer have kernel access, which is supposed to prevent a repeat of the Cloudflare issue, but may also restrict security tools functionality. https://blogs.windows.com/windowsexperience/2025/06/26/the-windows-resiliency-initiative-building-resilience-for-a-future-ready-enterprise/
SANS Stormcast Friday, June 27th, 2025: Open-VSX Flaw; Airoha Bluetooth Vulnerablity; Critical Cisco Identity Service Engine Vuln;
Open-VSX Flaw Puts Developers at Risk A flaw in the open-vsx extension marketplace could have let to the compromise of any extension offered by the marketplace. https://blog.koi.security/marketplace-takeover-how-we-couldve-taken-over-every-developer-using-a-vscode-fork-f0f8cf104d44 Bluetooth Vulnerability Could Allow Eavesdropping A vulnerability in the widely used Airoha Bluetooth chipset can be used to compromise devices and use them for eavesdropping. https://insinuator.net/2025/06/airoha-bluetooth-security-vulnerabilities/ Critical Cisco Identity Services Engine Vulnerability Multiple vulnerabilities in Cisco Identity Services Engine (ISE) and Cisco ISE Passive Identity Connector (ISE-PIC) could allow an unauthenticated, remote attacker to issue commands on the underlying operating system as the root user. https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ise-unauth-rce-ZAd2GnJ6
SANS Stormcast Thursday, June 26th, 2025: Another Netscaler Vuln; CentOS Web Panel Vuln; IP Based Certs
NetScaler ADC and NetScaler Gateway Security Bulletin for CVE-2025-6543 Citrix patched a memory overflow vulnerability leading to unintended control flow and denial of service. https://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX694788 Remote code execution in CentOS Web Panel - CVE-2025-48703 An arbitrary file upload vulnerability in the user (not admin) part of Web Panel can be used to execute arbitrary code https://fenrisk.com/rce-centos-webpanel Gogs Arbitrary File Deletion Vulnerability Due to the insufficient patch for the CVE-2024-39931, it's still possible to delete files under the .git directory and achieve remote command execution. https://github.com/gogs/gogs/security/advisories/GHSA-wj44-9vcg-wjq7 Let s Encrypt Will Soon Issue IP Address-Based Certs Let s Encrypt is almost ready to issue certificates for IP address SANs from Let's Encrypt's production environment. They'll only be available under the short-lived profile (which has a 6-day validity period), and that profile will remain allowlist-only for a while. https://community.letsencrypt.org/t/getting-ready-to-issue-ip-address-certificates/238777
SANS Stormcast Tuesday, June 24th, 2025: Telnet/SSH Scan Evolution; Fake Sonicwall Software; File-Fix vs Click-Fix
Quick Password Brute Forcing Evolution Statistics After collecting usernames and passwords from our ssh and telnet honeypots for about a decade, I took a look back at how scans changed. Attackers are attempting more passwords in each scans than they used to, but the average length of passwords did not change. https://isc.sans.edu/diary/Quick%20Password%20Brute%20Forcing%20Evolution%20Statistics/32068 Introducing FileFix A New Alternative to ClickFix Attacks Attackers may trick the user into copy/pasting strings into file explorer, which will execute commands similar to the ClickFix attack that tricks users into copy pasting the command into the start menu s cmd feature. https://www.mobile-hacker.com/2025/06/24/introducing-filefix-a-new-alternative-to-clickfix-attacks/ Threat Actors Modify and Re-Create Commercial Software to Steal User s Information A fake Sonicwall Netextender clone will steal user s credentials https://www.sonicwall.com/blog/threat-actors-modify-and-re-create-commercial-software-to-steal-users-information
SANS Stormcast Tuesday, June 24th, 2025: Ichano ATHome IP Camera Scans; Netscaler Vulnerability; WinRar Vulnerability
Scans for Ichano AtHome IP Cameras A couple days ago, a few sources started scanning for the username super_yg and the password 123. This is associated with Ichano IP Camera software. https://isc.sans.edu/diary/Scans%20for%20Ichano%20AtHome%20IP%20Cameras/32062 Critical Netscaler Security Update CVE-2025-5777 CVE 2025-5777 is a critical severity vulnerability impacting NetScaler Gateway, i.e. if NetScaler has been configured as Gateway (VPN virtual server, ICA Proxy, CVPN, RDP Proxy) OR AAA virtual server. https://www.netscaler.com/blog/news/critical-security-updates-for-netscaler-netscaler-gateway-and-netscaler-console/ WinRar Vulnerability CVE-2025-6218 WinRar may be tricked into extracting files into attacker-determined locations, possibly leading to remote code execution https://www.win-rar.com/singlenewsview.html?&L=0&tx_ttnews%5Btt_news%5D=276&cHash=b5165454d983fc9717bc8748901a64f9
SANS Stormcast Monday, June 23rd, 2025: ADS and Python; More Secure Cloud PCs; Zend.to Path Traversal; Parser Differentials
ADS & Python Tools Didier explains how to use his tools cut-bytes.py and filescanner to extract information from alternate data streams. https://isc.sans.edu/diary/ADS%20%26%20Python%20Tools/32058 Enhanced security defaults for Windows 365 Cloud PCs Microsoft announced more secure default configurations for its Windows 365 Cloud PC offerings. https://techcommunity.microsoft.com/blog/windows-itpro-blog/enhanced-security-defaults-for-windows-365-cloud-pcs/4424914 CVE-2025-34508: Another File Sharing Application, Another Path Traversal Horizon3 reveals details of a recently patched directory traversal vulnerability in zend.to. https://horizon3.ai/attack-research/attack-blogs/cve-2025-34508-another-file-sharing-application-another-path-traversal/ Unexpected security footguns in Go's parsers Go parsers for JSON and XML are not always compatible and can parse data in unexpected ways. This blog by Trails of Bits goes over the various security implications of this behaviour. https://blog.trailofbits.com/2025/06/17/unexpected-security-footguns-in-gos-parsers/
SANS Stormcast Friday, June 20th, 2025: New Employee Phishing; Malicious Tech Support Links; Social Engineering App Sepecific Passwords
How Long Until the Phishing Starts? About Two Weeks After setting up a Google Workspace and adding a new user, it took only two weeks for the new employee to receive somewhat targeted phishing emails. https://isc.sans.edu/diary/How%20Long%20Until%20the%20Phishing%20Starts%3F%20About%20Two%20Weeks/32052 Scammers hijack websites of Bank of America, Netflix, Microsoft, and more to insert fake phone numbers Scammers are placing Google ads that point to legitimate companies sites, but are injecting malicious text into the page advertising fake tech support numbers https://www.malwarebytes.com/blog/news/2025/06/scammers-hijack-websites-of-bank-of-america-netflix-microsoft-and-more-to-insert-fake-phone-number What s in an ASP? Creative Phishing Attack on Prominent Academics and Critics of Russia Targeted attacks are tricking victims into creating app-specific passwords to Google resources. https://cloud.google.com/blog/topics/threat-intelligence/creative-phishing-academics-critics-of-russia