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Sys-Admin InfoSec
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News of cybersecurity / information security, information technology, data leaks / breaches, cve, hacks, tools, trainings
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/ Dirty bug in HAProxy's headers processing, and that, when properly exploited, this bug allows to build an HTTP content smuggling attack

HAProxy Security Update (CVE-2023-25725)

https://www.mail-archive.com/haproxy@formilux.org/msg43229.html
/ VMware Carbon Black App Control updates address an injection vulnerability (CVE-2023-20858)

Hight

https://www.vmware.com/security/advisories/VMSA-2023-0004.html
/ CISA Adds Three Known Exploited Vulnerabilities to Catalog

..These types of vulnerabilities are frequent attack vectors for malicious cyber actors and pose significant risks to the federal enterprise..:

https://www.cisa.gov/uscert/ncas/current-activity/2023/02/21/cisa-adds-three-known-exploited-vulnerabilities-catalog
/ Analysis of the WinorDLL64 payload

WinorDLL64 payload serves as a backdoor that most notably acquires extensive system information, provides means for file manipulation, such as exfiltrating, overwriting, and removing files, and executes additional commands..:

https://www.welivesecurity.com/2023/02/23/winordll64-backdoor-vast-lazarus-arsenal/
/ Bypassing Akamai’s Web Application Firewall Using an Injected Content-Encoding Header

https://www.praetorian.com/blog/using-crlf-injection-to-bypass-akamai-web-app-firewall/
/ Malicious (and fake) ChatGPT client for Windows

Cybercriminals are distributing a Trojan stealer under the guise of a ChatGPT desktop client for Windows. We delve into the details and ways to protect yourself.

https://www.kaspersky.com/blog/chatgpt-stealer-win-client/47274/
Forwarded from Sys-Admin Up (Yevgeniy Goncharov)
Linux System Checker Script Tool

Linux System Checker Tool Script it is a bash noscript which can show system info, system load info, test disk speed I/O, show free space and more... System Checker can checks and shows Linux system info like as:

▫️ System Information
▫️ CPU and Memory Information
▫️ Boot Information
▫️ Mount and HDD IO Info
▫️ Top 5 memory and CPU usage processes
▫️ Speedtest
▫️ Defined Systemd Units Services State
▫️ Logged/Process users info
▫️ Listen ports
▫️ Running systemd units as list/tree
▫️ Unowned files

- [en]: Linux System Checker
- [ru]: Скрипт проверки Linux
Тест на Observability: Мониторинг, Логирование, Трейсинг
 
Оценить свои навыки в отношении построения систем оповещений, мониторинга и логирования, таких как Prometheus, Grafana, ELK, Apache kafka, etc. можно попробовать при помощи теста к онлайн-курсу "Observability: мониторинг, логирование, трейсинг"

Админ Linux, DevOps или разработчик должен грамотно управлять бесчисленным множеством серверов, при помощи теста можно проверить себя и посмотреть какие observability тематики предлагает курс.

Как результат можно будет:
— оценить свои навыки
— занять место по спец. цене
— получить доступ к демо-занятиям курса

Детали здесь: https://otus.pw/I3On/
 
/ Iron Tiger’s SysUpdate Reappears, Adds Linux Targeting

Detail the update that advanced persistent threat (APT) group Iron Tiger made on the custom malware family SysUpdate. In this version, we also found components that enable the malware to compromise Linux systems:

https://www.trendmicro.com/en_us/research/23/c/iron-tiger-sysupdate-adds-linux-targeting.html