Citrix Discovers Two Vulnerabilities, Both Exploited in the Wild

Two vulnerabilities have been found in NetScaler ADC and NetScaler Gateway, formerly known as Citrix ADC and Citrix Gateway, and are affecting six supported versions.
Tracked as CVE-2023-6548, this vulnerability needs access to NSIP, CLIP, or SNIP with management interface access, where, if gaining these privileges, a threat actor could authenticate remote code execution on the appliance's management interface.
This vulnerability is rated a medium severity CVSS score of 5.5 on a 10-point scale.
The second vulnerability, CVE-2023-6549, is a denial-of-service issue, and the device must have an AAA virtual server or be configured as a gateway; it has been given a high severity CVSS rating of 8.2.
Both of these flaws have been exploited in the wild, but no details have been shared from Citrix at this point.
1-51.15 and later releases of 13.1.
NetScaler ADC and NetScaler Gateway 13.0-92.21 and later releases of 13.0 . NetScaler ADC 13.1-FIPS 13.1-37.176 and later releases of 13.1-FIPS .
NetScaler ADC 12.1-FIPS 12.1-55.302 and later releases of 12.1-FIPS .
NetScaler ADC 12.1-NDcPP 12.1-55.302 and later releases of 12.1-NDcPP. Just last month, Citrix patched a critical flaw, CVE-2023-4966, that was heavily exploited by threat actors, but according to Tenable researchers, these two new vulnerabilities won't have as significant of an impact.
Still, users should mitigate and apply patches to their networks as soon as they can.
Citrix reports that it is alerting customers and channel partners about any potential issues that may arise due to these vulnerabilities through its bulletin in its Citrix Knowledge Center on its website.
Should customers need support or assistance, they can reach out to Citrix technical support.


This Cyber News was published on www.darkreading.com. Publication date: Thu, 18 Jan 2024 22:40:04 +0000


Cyber News related to Citrix Discovers Two Vulnerabilities, Both Exploited in the Wild

CVE-2007-2850 - The Session Reliability Service (XTE) in Citrix MetaFrame Presentation Server 3.0, Presentation Server 4.0, and Access Essentials 1.0 and 1.5, allows remote attackers to bypass network security policies and connect to arbitrary TCP ports via a ...
7 years ago
US Health Dept urges hospitals to patch critical Citrix Bleed bug - The U.S. Department of Health and Human Services warned hospitals this week to patch the critical 'Citrix Bleed' Netscaler vulnerability actively exploited in attacks. Ransomware gangs are already using Citrix Bleed to breach their targets' networks ...
11 months ago Bleepingcomputer.com
Citrix Discovers Two Vulnerabilities, Both Exploited in the Wild - Two vulnerabilities have been found in NetScaler ADC and NetScaler Gateway, formerly known as Citrix ADC and Citrix Gateway, and are affecting six supported versions. Tracked as CVE-2023-6548, this vulnerability needs access to NSIP, CLIP, or SNIP ...
9 months ago Darkreading.com
Two more Citrix NetScaler bugs exploited in the wild The Register - Two vulnerabilities in NetScaler's ADC and Gateway products have been fixed - but not before criminals found and exploited them, according to the vendor. CVE-2023-6548 could allow remote code execution in the appliances' management interface. It ...
9 months ago Go.theregister.com
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 ...
11 months ago Bleepingcomputer.com
CISA adds Check Point Quantum Security Gateways and Linux Kernel flaws to its Known Exploited Vulnerabilities catalog - CISA adds Apache Flink flaw to its Known Exploited Vulnerabilities catalog. CISA adds D-Link DIR router flaws to its Known Exploited Vulnerabilities catalog. CISA adds Google Chrome zero-days to its Known Exploited Vulnerabilities catalog. CISA adds ...
5 months ago Securityaffairs.com
Citrix warns admins to kill NetScaler user sessions to block hackers - Citrix reminded admins today that they must take additional measures after patching their NetScaler appliances against the CVE-2023-4966 'Citrix Bleed' vulnerability to secure vulnerable devices against attacks. Besides applying the necessary ...
11 months ago Bleepingcomputer.com
HHS warns of 'Citrix Bleed' attacks after hospital outages - The U.S. Department of Health and Human Services is warning hospitals and healthcare facilities across the country to patch a vulnerability known as "Citrix Bleed" that is being used in attacks by ransomware gangs. For weeks, cybersecurity experts ...
11 months ago Therecord.media
Check Point released hotfix for actively exploited VPN zero-day - MUST READ. Check Point released hotfix for actively exploited VPN zero-day. Microsoft Patch Tuesday security updates for May 2024 fixes 2 actively exploited zero-days. Critical Fortinet's FortiClient EMS flaw actively exploited in the wild. Apple ...
5 months ago Securityaffairs.com
Citrix Bleed exploit lets hackers hijack NetScaler accounts - A proof-of-concept exploit is released for the 'Citrix Bleed' vulnerability, tracked as CVE-2023-4966, that allows attackers to retrieve authentication session cookies from vulnerable Citrix NetScaler ADC and NetScaler Gateway appliances. ...
11 months ago Bleepingcomputer.com
New MOVEit Transfer critical bug is actively exploited - MUST READ. New MOVEit Transfer critical bug is actively exploited. CISA adds Microsoft SharePoint bug disclosed at Pwn2Own to its Known Exploited Vulnerabilities catalog. Critical Fortinet's FortiClient EMS flaw actively exploited in the wild. PoC ...
4 months ago Securityaffairs.com
Hackers use Citrix Bleed flaw in attacks on govt networks worldwide - Threat actors are leveraging the 'Citrix Bleed' vulnerability, tracked as CVE-2023-4966, to target government, technical, and legal organizations in the Americas, Europe, Africa, and the Asia-Pacific region. Researchers from Mandiant report that four ...
11 months ago Bleepingcomputer.com
US Health Dept Urges Hospitals to Patch Critical 'Citrix Bleed' Vulnerability - This week, the US Department of Health and Human Services has warned hospitals of the critical 'Citrix Bleed' Netscaler vulnerability that has been exploited by threat actors in cyberattacks. On Thursday, the department's security team, Health Sector ...
11 months ago Cysecurity.news
Citrix warns admins to patch NetScaler CVE-2023-4966 bug immediately - Citrix warned admins today to secure all NetScaler ADC and Gateway appliances immediately against ongoing attacks exploiting the CVE-2023-4966 vulnerability. The company patched this critical sensitive information disclosure flaw two weeks ago, ...
11 months ago Bleepingcomputer.com
CVE-2020-8245 - Improper Input Validation on Citrix ADC and Citrix Gateway 13.0 before 13.0-64.35, Citrix ADC and NetScaler Gateway 12.1 before 12.1-58.15, Citrix ADC 12.1-FIPS before 12.1-55.187, Citrix ADC and NetScaler Gateway 12.0, Citrix ADC and NetScaler ...
4 years ago
CVE-2020-8247 - Citrix ADC and Citrix Gateway 13.0 before 13.0-64.35, Citrix ADC and NetScaler Gateway 12.1 before 12.1-58.15, Citrix ADC 12.1-FIPS before 12.1-55.187, Citrix ADC and NetScaler Gateway 12.0, Citrix ADC and NetScaler Gateway 11.1 before 11.1-65.12, ...
4 years ago
CVE-2020-8246 - Citrix ADC and Citrix Gateway 13.0 before 13.0-64.35, Citrix ADC and NetScaler Gateway 12.1 before 12.1-58.15, Citrix ADC 12.1-FIPS before 12.1-55.187, Citrix ADC and NetScaler Gateway 12.0, Citrix ADC and NetScaler Gateway 11.1 before 11.1-65.12, ...
4 years ago
Citrix warns of new Netscaler zero-days exploited in attacks - Citrix urged customers on Tuesday to immediately patch Netscaler ADC and Gateway appliances exposed online against two actively exploited zero-day vulnerabilities. The two zero-days impact the Netscaler management interface and expose unpatched ...
9 months ago Bleepingcomputer.com
CISA pushes federal agencies to patch Citrix RCE within a week - Today, CISA ordered U.S. federal agencies to secure their systems against three recently patched Citrix NetScaler and Google Chrome zero-days actively exploited in attacks, pushing for a Citrix RCE bug to be patched within a week. Citrix urged ...
9 months ago Bleepingcomputer.com
14 New DrayTek routers' flaws impacts over 700,000 devices in 168 countries - Any cookies that may not be particularly necessary for the website to function and is used specifically to collect user personal data via analytics, ads, other embedded contents are termed as non-necessary cookies. Multiple flaws in DrayTek ...
1 month ago Securityaffairs.com
CISA Warns of FXC Router, QNAP NVR Vulnerabilities Exploited in the Wild - The US cybersecurity agency CISA on Thursday released industrial control system advisories for vulnerabilities affecting Future X Communications routers and QNAP network video recorder devices, and warned organizations that they have been exploited ...
10 months ago Securityweek.com
newsletter Round 474 by Pierluigi Paganini - Microsoft Patch Tuesday security updates for May 2024 fixes 2 actively exploited zero-days. Microsoft fixed two zero-day bugs exploited in malware attacks. HTTP/2 CONTINUATION Flood technique can be exploited in DoS attacks. Critical Fortinet's ...
5 months ago Securityaffairs.com
#StopRansomware: LockBit 3.0 Ransomware Affiliates Exploit CVE 2023-4966 Citrix Bleed Vulnerability - These #StopRansomware advisories include recently and historically observed tactics, techniques, and procedures and indicators of compromise to help organizations protect against ransomware. Historically, LockBit 3.0 affiliates have conducted attacks ...
11 months ago Cisa.gov
Juniper Networks fixed a critical authentication bypass flaw in some of its routers - MUST READ. Threat actors actively exploit D-Link DIR-859 router flaw CVE-2024-0769. CISA adds Oracle WebLogic Server flaw to its Known Exploited Vulnerabilities catalog. Russia-linked APT28 used post-compromise tool GooseEgg to exploit CVE-2022-38028 ...
4 months ago Securityaffairs.com
High-severity flaw affects Cisco Firepower Management Center - CISA adds GitLab flaw to its Known Exploited Vulnerabilities catalog. CISA adds Cisco ASA and FTD and CrushFTP VFS flaws to its Known Exploited Vulnerabilities catalog. Critical Fortinet's FortiClient EMS flaw actively exploited in the wild. Hackers ...
5 months ago Securityaffairs.com

Latest Cyber News


Cyber Trends (last 7 days)


Trending Cyber News (last 7 days)