Security News > 2023 > November > LockBit ransomware exploits Citrix Bleed in attacks, 10K servers exposed

The Lockbit ransomware attacks use publicly available exploits for the Citrix Bleed vulnerability to breach the systems of large organizations, steal data, and encrypt files.
Although Citrix made fixes available for CVE-2023-4966 more than a month ago, thousands of internet-exposed endpoints are still running vulnerable appliances, many in the U.S. High-profile Lockbit attacks.
These are exposed Citrix servers [1, 2] vulnerable to the Citrix Bleed flaw, which he says the LockBit ransomware gang is exploiting attacks.
These attacks are likely being conducted by a LockBit affiliate who is heavily utilizing this vulnerability to breach networks rather than the ransomware operation itself being behind the attack.
A GandCrab/REvil affiliate specialized in exploiting MSP software [1, 2, 3] to encrypt companies, and we are likely seeing a LockBit affiliate utilizing the Citrix Bleed flaw to mass-breach networks.
Hackers use Citrix Bleed flaw in attacks on govt networks worldwide.
News URL
Related news
- Ransomware gangs exploit Paragon Partition Manager bug in BYOVD attacks (source)
- Hackers Exploit Paragon Partition Manager Driver Vulnerability in Ransomware Attacks (source)
- Hackers exploit Cityworks RCE bug to breach Microsoft IIS servers (source)
- DragonRank Exploits IIS Servers with BadIIS Malware for SEO Fraud and Gambling Redirects (source)
- Threat Actors Exploit ClickFix to Deploy NetSupport RAT in Latest Cyber Attacks (source)
- US sanctions LockBit ransomware’s bulletproof hosting provider (source)
- US indicts 8Base ransomware operators for Phobos encryption attacks (source)
- RA World Ransomware Attack in South Asia Links to Chinese Espionage Toolset (source)
- Chinese espionage tools deployed in RA World ransomware attack (source)
- SonicWall firewall bug leveraged in attacks after PoC exploit release (source)
Related Vulnerability
DATE | CVE | VULNERABILITY TITLE | RISK |
---|---|---|---|
2023-10-10 | CVE-2023-4966 | Unspecified vulnerability in Citrix products Sensitive information disclosure in NetScaler ADC and NetScaler Gateway when configured as a Gateway (VPN virtual server, ICA Proxy, CVPN, RDP Proxy) or AAA ?virtual?server. | 7.5 |