security

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 […]

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 […]

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 […]

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 […]

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 […]

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 […]

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 […]

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 […]

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 […]

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 […]