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FritzFrog Returns with Log4Shell and PwnKit, Spreading Malware Inside Your Network

By Newsroom
The threat actor behind a peer-to-peer (P2P) botnet known as FritzFrog has made a return with a new variant that leverages the Log4Shell vulnerability to propagate internally within an already compromised network. "The vulnerability is exploited in a brute-force manner that attempts to target as many vulnerable Java applications as possible," web infrastructure and security

New PoC Exploit for Apache OfBiz Vulnerability Poses Risk to ERP Systems

By Newsroom
Cybersecurity researchers have developed a proof-of-concept (PoC) code that exploits a recently disclosed critical flaw in the Apache OfBiz open-source Enterprise Resource Planning (ERP) system to execute a memory-resident payload. The vulnerability in question is CVE-2023-51467 (CVSS score: 9.8), a bypass for another severe shortcoming in the same software (CVE-

Researchers Uncover New Drokbk Malware that Uses GitHub as a Dead Drop Resolver

By Ravie Lakshmanan
The subgroup of an Iranian nation-state group known as Nemesis Kitten has been attributed as behind a previously undocumented custom malware dubbed Drokbk that uses GitHub as a dead drop resolver to exfiltrate data from an infected computer, or to receive commands. "The use of GitHub as a virtual dead drop helps the malware blend in," Secureworks principal researcher Rafe Pilling said. "All the

Iranian Hackers Compromised a U.S. Federal Agency’s Network Using Log4Shell Exploit

By Ravie Lakshmanan
Iranian government-sponsored threat actors have been blamed for compromising a U.S. federal agency by taking advantage of the Log4Shell vulnerability in an unpatched VMware Horizon server. The details, which were shared by the U.S. Cybersecurity and Infrastructure Security Agency (CISA), come in response to incident response efforts undertaken by the authority from mid-June through mid-July 2022

Hackers Started Exploiting Critical "Text4Shell" Apache Commons Text Vulnerability

By Ravie Lakshmanan
WordPress security company Wordfence on Thursday said it started detecting exploitation attempts targeting the newly disclosed flaw in Apache Commons Text on October 18, 2022. The vulnerability, tracked as CVE-2022-42889 aka Text4Shell, has been assigned a severity ranking of 9.8 out of a possible 10.0 on the CVSS scale and affects versions 1.5 through 1.9 of the library. It's also similar to

LockBit Ransomware Abuses Windows Defender to Deploy Cobalt Strike Payload

By Ravie Lakshmanan
A threat actor associated with the LockBit 3.0 ransomware-as-a-service (RaaS) operation has been observed abusing the Windows Defender command-line tool to decrypt and load Cobalt Strike payloads.  According to a report published by SentinelOne last week, the incident occurred after obtaining initial access via the Log4Shell vulnerability against an unpatched VMware Horizon Server. "Once initial

Log4Shell Still Being Exploited to Hack VMWare Servers to Exfiltrate Sensitive Data

By Ravie Lakshmanan
The U.S. Cybersecurity and Infrastructure Security Agency (CISA), along with the Coast Guard Cyber Command (CGCYBER), on Thursday released a joint advisory warning of continued attempts on the part of threat actors to exploit the Log4Shell flaw in VMware Horizon servers to breach target networks. "Since December 2021, multiple threat actor groups have exploited Log4Shell on unpatched,

FTC threatens “legal action” over unpatched Log4j and other vulns

By Paul Ducklin
Remember the Equifax breach? Remember the $700m penalty? In case you'd forgotten, here's the FTC to refresh your memory!

Log4Shell vulnerability Number Four: “Much ado about something”

By Paul Ducklin
It's a Log4j bug, and you ought to patch it. But we don't think it's a critical crisis like the last one.

S3 Ep63: Log4Shell (what else?) and Apple kernel bugs [Podcast+Transcript]

By Paul Ducklin
Latest episode - listen now! (Yes, there are plenty of critical things to go along with Log4Shell.)

Log4Shell explained – how it works, why you need to know, and how to fix it

By Paul Ducklin
Find out how to deal with the Log4Shell vulnerability right across your estate. Yes, you need to patch, but that helps everyone else along with you!

“Log4Shell” Java vulnerability – how to safeguard your servers

By Paul Ducklin
Just when you thought it was safe to relax for the weekend... a critical bug showed up in Apache's Log4j product

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