Security News > 2023 > May > Microsoft: Iranian hacking groups join Papercut attack spree
Microsoft says Iranian state-backed hackers have joined the ongoing assault targeting vulnerable PaperCut MF/NG print management servers.
"The PaperCut exploitation activity by Mint Sandstorm appears opportunistic, affecting organizations across sectors and geographies," the Microsoft Threat Intelligence team said.
They follow attacks linked to Lace Tempest by Microsoft, a hacking group whose malicious activity overlaps with the FIN11 and TA505 cybercrime gangs connected to the Clop ransomware operation.
The PaperCut vulnerability exploited in these attacks and tracked as CVE-2023-27350 is a pre-authentication critical remote code execution bug in PaperCut MF or NG versions 8.0 or later.
While multiple cybersecurity companies have released indicators of compromise and detection rules for PaperCut exploits, VulnCheck shared details on a new attack method last week that can bypass existing detections, allowing attackers to keep exploiting CVE-2023-27350 unobstructed.
Defenders are encouraged to immediately upgrade theirPaperCut MF and PaperCut NG software to versions 20.1.7, 21.2.11, and 22.0.9 and later, which address this RCE bug and remove the attack vector.
News URL
Related news
- Microsoft Identifies Storm-0501 as Major Threat in Hybrid Cloud Ransomware Attacks (source)
- Andariel Hacking Group Shifts Focus to Financial Attacks on U.S. Organizations (source)
- DOJ, Microsoft seize 107 domains used in Russia's Star Blizzard phishing attacks (source)
- Microsoft and DOJ disrupt Russian FSB hackers' attack infrastructure (source)
- Microsoft issues 117 patches – some for flaws already under attack (source)
- Microsoft Detects Growing Use of File Hosting Services in Business Email Compromise Attacks (source)
- Microsoft: Ransomware Attacks Growing More Dangerous, Complex (source)
- VEILDrive Attack Exploits Microsoft Services to Evade Detection and Distribute Malware (source)
- Iranian Hackers Use "Dream Job" Lures to Deploy SnailResin Malware in Aerospace Attacks (source)
- Microsoft patches Windows zero-day exploited in attacks on Ukraine (source)
Related Vulnerability
DATE | CVE | VULNERABILITY TITLE | RISK |
---|---|---|---|
2023-04-20 | CVE-2023-27350 | Improper Access Control vulnerability in Papercut NG This vulnerability allows remote attackers to bypass authentication on affected installations of PaperCut NG 22.0.5 (Build 63914). | 9.8 |