End-of-Day report
Timeframe: Freitag 15-04-2022 18:00 - Dienstag 19-04-2022 18:00
Handler: Stephan Richter
Co-Handler: n/a
News
Freier Decryptor für Yanlouwang-Ransomware
Sicherheitsanbieter Kaspersky hat in der Verschlüsselung der Yanlouwang-Ransomware eine Schwachstelle entdeckt. In Folge dieser Schwachstelle kann die Verschlüsselung von Dateien unter bestimmten Voraussetzungen geknackt werden. Jedenfalls steht ein kostenloser Decryptor für die Yanlouwang-Ransomware zur Verfügung.
https://www.borncity.com/blog/2022/04/19/freier-decryptor-fr-yanlouwang-ransomware/
Achtung unseriös: hondrox.com, hondrox.eu & hondrox.shop
Auf der Suche nach Behandlungsmöglichkeiten bei Gelenkschmerzen stoßen Sie möglicherweise auf -Hondrox-. Ein Spray, der die -Wiederherstellung der Knorpel in den Gelenken- sowie Schmerzlinderung verspricht. Auf hondrox.com, hondrox.eu und hondrox.shop wird dieses vermeintliche Wundermittel angeboten. Doch Vorsicht: Diese Online-Shops sind unseriös. Sie verschwenden Ihr Geld!
https://www.watchlist-internet.at/news/achtung-unserioes-hondroxcom-hondroxeu-hondroxshop/
GitHub-Sicherheitslücke: OAuth-Token von Heroku und Travis-CI kompromittiert
Unauthorisierte Zugriffe auf die npm-Infrastruktur haben kriminelle Aktivitäten enttarnt. Betroffenen sind OAuth-Token von Heroku und Travis-CI.
https://heise.de/-6703708
Sicherheit fürs Anmelden: Was bei Kennwörtern, FIDO2 und TOTP zu beachten ist
In der Theorie sind zweite Faktoren einfach. In der praktischen Umsetzung tauchen aber diverse Fragen auf - die häufigsten haben wir zusammengetragen.
https://heise.de/-6660829
Lenovo System Update könnte Schadcode auf Computer lassen
Lenovo hat Sicherheitslücken in einer Anwendung und verschiedenen BIOS-Versionen geschlossen und Hintertüren entfernt.
https://heise.de/-6740544
Studie: Ciscos Webex telefoniert auch stummgeschaltet nach Hause
Bei einer Untersuchung der Stummschaltefunktion von Videokonferenzsoftware fiel Ciscos Webex negativ auf.
https://www.golem.de/news/studie-ciscos-webex-telefoniert-auch-stummgeschaltet-nach-hause-2204-164659-rss.html
New stealthy BotenaGo malware variant targets DVR devices
Threat analysts have spotted a new variant of the BotenaGo botnet malware, and its the stealthiest seen so far, running undetected by any anti-virus engine.
https://www.bleepingcomputer.com/news/security/new-stealthy-botenago-malware-variant-targets-dvr-devices/
Managing container vulnerability risks: Tools and best practices
Containers are quickly becoming the de facto form of compute and workload deployments in the cloud-native ecosystem. The latest Cloud Native Computing Foundation (CNCF) Cloud Native Survey shows that 96% of organizations are either actively using containers and Kubernetes or are evaluating them. Containers have well-known benefits such as portability, consistency and efficiency, but they aren-t without security concerns.
https://www.csoonline.com/article/3656702/managing-container-vulnerability-risks-tools-and-best-practices.html
Sysmons RegistryEvent (Value Set), (Mon, Apr 18th)
A colleague asked me about Sysmon's event ID 13 RegistryEvent (Value Set). They wanted to know if binary data could be recorded in event 13.
https://isc.sans.edu/diary/rss/28558
Why you shouldn-t automate your VirusTotal uploads
Security teams use VirusTotal as a second opinion scanner, but its not advisable to upload documents to VirusTotal as that may result in a breach of confidence and exposure of confidential data.
https://blog.malwarebytes.com/101/2022/04/why-you-shouldnt-automate-your-virustotal-uploads/
How vx-underground is building a hacker-s dream library
When malware repository vx-underground launched in 2019, it hardly made a splash in the hacking world. "I had no success really," said its founder, who goes by the online moniker smelly_vx.
https://therecord.media/how-vx-underground-is-building-a-hackers-dream-library/
Stories from the SOC - Lateral movement using default accounts
The Windows -Administrator- account is a highly privileged account that is created during a Windows installation by default. If this account is not properly secured, attackers may leverage it to conduct privilege escalation and lateral movement.
https://cybersecurity.att.com/blogs/security-essentials/stories-from-the-soc-lateral-movement-using-default-accounts
Vulnerabilities
Angreifer könnten sich als Admins an Cisco Wireless LAN Controller anmelden
Es gibt wichtige Sicherheitsupdates für unter anderem Cisco IOS XE, SD-WAN und WLC. Eine Lücke gilt als kritisch.
https://heise.de/-6737709
Security updates for Monday
Security updates have been issued by Debian (abcm2ps and chromium), Fedora (cacti, cacti-spine, and fribidi), and Mageia (crun, docker-containerd, libarchive, mediawiki, and ruby).
https://lwn.net/Articles/891725/
Security updates for Tuesday
Security updates have been issued by Debian (gzip and xz-utils), Fedora (dhcp and rsync), Mageia (chromium-browser-stable), openSUSE (chromium), SUSE (gzip, openjpeg2, and zabbix), and Ubuntu (klibc).
https://lwn.net/Articles/891818/
Elcomplus SmartPPT SCADA Server
This advisory contains mitigations for Cross-site Scripting, Unauthorized Exposure to Sensitive Information, Unrestricted Upload of File with Dangerous Type, Path Traversal, and Cross-site Request Forgery vulnerabilities in the Elcomplus SmartPPT SCADA Server voice and data dispatch software.
https://us-cert.cisa.gov/ics/advisories/icsa-22-109-05
Multiple RTOS (Update E)
Update E:
Windriver VxWorks - Update in progress
The following devices use Windriver VxWorks as their RTOS:
Hitachi Energy GMS600 - See public advisory.
Hitachi Energy PWC600 - See public advisory.
Hitachi Energy REB500 - See public advisory.
Hitachi Energy Relion 670, 650 series and SAM600-IO - See public advisory
Hitachi Energy RTU500 series CMU - Updates available for some firmware versions - See public advisory.
Hitachi Energy Modular Switchgear Monitoring System MSM - Protect your network - See public advisory.
https://us-cert.cisa.gov/ics/advisories/icsa-21-119-04
Delta Controls enteliTOUCH 3.40.3935 Cookie User Password Disclosure
https://cxsecurity.com/issue/WLB-2022040067
Delta Controls enteliTOUCH 3.40.3935 Cross Site Scripting
https://cxsecurity.com/issue/WLB-2022040065
IBM Security Bulletins
https://www.ibm.com/blogs/psirt/
K56105136: BIND vulnerability CVE-2022-0396
https://support.f5.com/csp/article/K56105136
K21054458: Eclipse Jetty vulnerability CVE-2017-7656
https://support.f5.com/csp/article/K21054458
Asterisk: Mehrere Schwachstellen
https://www.cert-bund.de/advisoryshort/CB-K22-0456
7-Zip: Schwachstelle ermöglicht Ausführen von beliebigem Programmcode
https://www.cert-bund.de/advisoryshort/CB-K22-0459
Microsoft Edge: Mehrere Schwachstellen
https://www.cert-bund.de/advisoryshort/CB-K22-0458
MariaDB: Mehrere Schwachstellen ermöglichen Denial of Service
https://www.cert-bund.de/advisoryshort/CB-K22-0461