Security Affairs

OCTOBER 9, 2023

IBM observed a credential harvesting campaign that is targeting Citrix NetScaler gateways affected by the CVE-2023-3519 vulnerability. IBM’s X-Force researchers reported that threat actors are conducting a large-scale credential harvesting campaign exploiting the recent CVE-2023-3519 vulnerability (CVSS score: 9.8)

VPN 136

VPN Authentication Cyber Attacks Passwords 136

Security Affairs

FEBRUARY 9, 2024

Fortinet warns that the recently discovered critical remote code execution flaw in FortiOS SSL VPN, tracked CVE-2024-21762, is being actively exploited. The vendor recommends to disable SSL VPN as a workaround. “Workaround : disable SSL VPN (disable webmode is NOT a valid workaround). ” reads the advisory.

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VPN Firmware Malware Government 134

Security Affairs

JULY 3, 2023

Researchers reported that there are 490,000 Fortinet firewalls exposing SSL VPN interfaces on the internet, and roughly 69% of them are still vulnerable to CVE-2023-27997. For this reason, if the customer has SSL-VPN enabled, Fortinet is advising customers to take immediate action to upgrade to the most recent firmware release.

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Security Affairs

OCTOBER 25, 2023

Citrix warned of attacks actively exploiting the vulnerability CVE-2023-4966 in NetScaler ADC and Gateway appliances. Citrix is urging administrators to secure all NetScaler ADC and Gateway appliances against the CVE-2023-4966 vulnerability, which is actively exploited in attacks. reported Citrix. reported Citrix.

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Authentication VPN Hacking Government 137

Security Affairs

FEBRUARY 1, 2024

In early January, the software firm reported that threat actors are exploiting two zero-day vulnerabilities (CVE-2023-46805, CVE-2024-21887) in Connect Secure (ICS) and Policy Secure to remotely execute arbitrary commands on targeted gateways. The flaw CVE-2023-46805 (CVSS score 8.2) x and Ivanti Policy Secure.

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VPN Authentication Software Malware 133

Security Affairs

JUNE 13, 2023

Fortinet addressed a new critical flaw, tracked as CVE-2023-27997, in FortiOS and FortiProxy that is likely exploited in a limited number of attacks. Fortinet has finally published an official advisory about the critical vulnerability, tracked as CVE-2023-27997 (CVSS score: 9.2), impacting FortiOS and FortiProxy. through 6.2.13

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Security Affairs

JUNE 20, 2023

Zyxel released security updates to address a critical vulnerability affecting its network-attached storage (NAS) devices. Zyxel released security updates to address a critical security flaw, tracked as CVE-2023-27992 (CVSS score: 9.8), affecting its network-attached storage (NAS) devices. in its firewall devices.

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Security Affairs

JUNE 22, 2023

The proof-of-concept (PoC) exploit code for high-severity vulnerability (CVE-2023-20178) in Cisco AnyConnect Secure was published online. The client update process is executed after a successful VPN connection is established.” ” reads the advisory published by the company.

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Security Affairs

SEPTEMBER 8, 2023

A zero-day vulnerability (CVE-2023-20269) in Cisco ASA and FTD is actively exploited in ransomware attacks, the company warns. “This vulnerability is due to improper separation of authentication, authorization, and accounting (AAA) between the remote access VPN feature and the HTTPS management and site-to-site VPN features.

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Ransomware VPN Authentication Hacking 145

Security Affairs

OCTOBER 18, 2023

Experts reported that the vulnerability CVE-2023-4966 in Citrix NetScaler ADC/Gateway devices has been exploited in attacks since late August. On October 10, Citrix published a security bulletin related to a critical vulnerability, tracked as CVE-2023-4966, in Citrix NetScaler ADC/Gateway devices. ” reported Citrix.

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Authentication VPN Hacking Government 134

Security Affairs

AUGUST 2, 2023

Researchers warn that hundreds of Citrix servers have been hacked in an ongoing campaign exploiting the RCE CVE-2023-3519. Cybersecurity and Infrastructure Security Agency (CISA) recently warned of cyber attacks against Citrix NetScaler Application Delivery Controller (ADC) and Gateway devices exploiting the zero-day CVE-2023-3519.

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Security Affairs

JULY 23, 2023

Researchers reported that more than 15000 Citrix servers exposed online are likely vulnerable to attacks exploiting the vulnerability CVE-2023-3519. The company added that successful exploitation requires that the appliance is configured as a Gateway (VPN virtual server, ICA Proxy, CVPN, RDP Proxy) OR AAA virtual server.

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VPN Cyber Attacks Software Cybersecurity 98

Security Affairs

NOVEMBER 13, 2024

In May 2023, Microsoft reported that the Volt Typhoon APT infiltrated critical infrastructure organizations in the U.S. Microsoft first noticed that to conceal malicious traffic, the threat actor routes it through compromised small office and home office (SOHO) network devices, including routers, firewalls, and VPN hardware.

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VPN Government Malware Manufacturing 125

Security Affairs

JANUARY 13, 2024

Akira ransomware infections were first reported in Finland in June 2023, however, in December the number of attacks increased. ” The ransomware attack reported in late 2023, targeted organizations’ networks using poorly secured VPN gateway on Cisco ASA or FTD devices.

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Security Affairs

FEBRUARY 27, 2024

Taiwanese networking vendor Zyxel addressed four vulnerabilities, respectively tracked as CVE-2023-6397 , CVE-2023-6398 , CVE-2023-6399 , and CVE-2023-6764 , in its firewalls and access points. Patch 2 USG FLEX 50(W)/USG20(W)-VPN Not affected ZLD V4.16 Patch 2 USG FLEX 50(W)/USG20(W)-VPN Not affected ZLD V4.16

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Firewall VPN Authentication Hacking 139

Security Affairs

OCTOBER 11, 2023

US CISA added the flaw CVE-2023-21608 in Adobe Acrobat Reader to its Known Exploited Vulnerabilities catalog. Cybersecurity and Infrastructure Security Agency (CISA) added five new flaws to its Known Exploited Vulnerabilities Catalog , including a high-severity flaw ( CVE-2023-21608 ) (CVSS score: 7.8)

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VPN Encryption Hacking Risk 139

Security Affairs

NOVEMBER 9, 2024

Attackers accessed targets via VPN gateways lacking multifactor authentication, some of which ran outdated software. In each of the cases, attackers initially accessed targets using compromised VPN gateways without multifactor authentication enabled. Some of these VPNs were running unsupported software versions.”

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Backups Ransomware VPN Accountability 134

Security Affairs

JUNE 4, 2023

Zyxel has published guidance for protecting firewall and VPN devices from the ongoing attacks recently discovered. Zyxel has published guidance for protecting firewall and VPN devices from ongoing attacks exploiting CVE-2023-28771 , CVE-2023-33009 , and CVE-2023-33010 vulnerabilities. Patch 2 VPN ZLD V4.60

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Firmware VPN Firewall Hacking 98

Security Affairs

JANUARY 13, 2024

Akira ransomware infections were first reported in Finland in June 2023, however, in December the number of attacks increased. ” The ransomware attack reported in late 2023, targeted organizations’ networks using poorly secured VPN gateway on Cisco ASA or FTD devices.

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Ransomware Backups VPN Authentication 125

Security Affairs

APRIL 28, 2023

A vulnerability impacting Zyxel firewalls, tracked as CVE-2023-28771, can be exploited to execute arbitary code on vulnerable devices. Researchers from TRAPA Security have discovered a critical remote code execution vulnerability, tracked as CVE-2023-28771 (CVSS score 9.8), impacting Zyxel Firewall. through 5.35. through 5.35.

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Firewall Firmware VPN Authentication 98

Security Affairs

JANUARY 13, 2024

Akira ransomware targets Finnish organizations GitLab fixed a critical zero-click account hijacking flaw Juniper Networks fixed a critical RCE bug in its firewalls and switches Vast Voter Data Leaks Cast Shadow Over Indonesia ’s 2024 Presidential Election Researchers created a PoC for Apache OFBiz flaw CVE-2023-51467 Team Liquid’s wiki leak exposes (..)

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VPN Cybercrime Ransomware Hacking 134

Security Affairs

NOVEMBER 13, 2024

In May 2023, Microsoft reported that the Volt Typhoon APT infiltrated critical infrastructure organizations in the U.S. Microsoft first noticed that to conceal malicious traffic, the threat actor routes it through compromised small office and home office (SOHO) network devices, including routers, firewalls, and VPN hardware.

VPN 77

VPN Government Malware Manufacturing 77

Security Affairs

JANUARY 17, 2024

Citrix warns customers to install security updates to address two actively exploited zero-day vulnerabilities, tracked as CVE-2023-6548 and CVE-2023-6549, impacting Netscaler ADC and Gateway appliances. The vulnerability CVE-2023-6548 is an authenticated (low privileged) remote code execution affecting Management Interface.

VPN 133

VPN Software Authentication Internet 133

Security Affairs

JUNE 1, 2023

Threat actors are actively exploiting a command injection flaw, tracked as CVE-2023-28771, in Zyxel firewalls to install malware. Threat actors are actively attempting to exploit a command injection vulnerability, tracked as CVE-2023-28771 , that impacts Zyxel firewalls. through 4.73, VPN series firmware versions 4.60

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Firewall Firmware VPN DDOS 98

Security Affairs

SEPTEMBER 22, 2024

The hacktivist group Twelve has been active since at least April 2023, it was formed in the wake of the conflict between Russia and Ukraine. The threat actor gains initial access by abusing valid local or domain accounts, VPN or SSH certificates.

VPN 134

VPN Encryption Hacking Accountability 134

Security Affairs

JUNE 12, 2023

Fortinet released security updates to fix a critical security flaw in its FortiGate firewalls that lead to remote code execution. Fortinet has released security patches to address a critical security vulnerability, tracked as CVE-2023-27997, in its FortiGate firewalls. Patch your #Fortigate. Patch your #Fortigate.

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Firewall VPN Authentication Media 98

Security Affairs

AUGUST 29, 2023

A financially motivated actor linked to the FIN8 group exploits the CVE-2023-3519 RCE in attacks on Citrix NetScaler systems in massive attacks. The hackers are exploiting the remote code execution, tracked as CVE-2023-3519 , in a large-scale campaign. The flaw CVE-2023-3519 (CVSS score: 9.8) php) on victim machines.

VPN 128

VPN Ransomware DNS Malware 128

Security Affairs

NOVEMBER 3, 2024

Quad7 botnet, also known as CovertNetwork-1658 or xlogin, was first spotted in the summer of 2023 by security researcher Gi7w0rm. The botnet operators are targeting multiple SOHO devices and VPN appliances, including TP-LINK, Zyxel, Asus, D-Link, and Netgear, exploiting both known and previously unknown vulnerabilities.

Passwords 135

Passwords Wireless VPN Accountability 135

Security Affairs

DECEMBER 3, 2023

The addressed issues are tracked as CVE-2023-35136 , CVE-2023-35139 , CVE-2023-37925 , CVE-2023-37926 , CVE-2023-4397 , CVE-2023-4398 , CVE-2023-5650 , CVE-2023-5797 , CVE-2023-5960. Taiwanese vendor Zyxel addressed tens of vulnerabilities in its firewalls and access points.

Firewall 133

Firewall Authentication VPN Cyber Attacks 133

Security Affairs

OCTOBER 6, 2023

Cisco addressed a critical Static Credentials Vulnerability, tracked as CVE-2023-20101, impacting Emergency Responder. Cisco released security updates to address a critical vulnerability, tracked as CVE-2023-20101 (CVSS score: 9.8), impacting Emergency Responder.

Accountability 134

Accountability VPN Hacking Software 134

Security Affairs

APRIL 24, 2024

Nation-state actor UAT4356 has been exploiting two zero-days in ASA and FTD firewalls since November 2023 to breach government networks. Additionally, Line Dancer hooks into the crash dump and AAA processes to evade forensic analysis and establish remote access VPN tunnels.

Firewall 135

Firewall Government VPN Authentication 135

Security Affairs

JANUARY 18, 2024

Cybersecurity and Infrastructure Security Agency (CISA) added the following vulnerabilities to its Known Exploited Vulnerabilities (KEV) catalog. CVE-2023-6548 – Citrix NetScaler ADC and NetScaler Gateway Code Injection Vulnerability. CVE-2023-6549 – Citrix NetScaler ADC and NetScaler Gateway Buffer Overflow Vulnerability.

Authentication 138

Authentication VPN Software Engineering 138

Security Affairs

JANUARY 21, 2024

Admin of the BreachForums hacking forum sentenced to 20 years supervised release Russia-linked Midnight Blizzard APT hacked Microsoft corporate emails VF Corp December data breach impacts 35 million customers China-linked APT UNC3886 exploits VMware zero-day since 2021 Ransomware attacks break records in 2023: the number of victims rose by 128% U.S.

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Artificial Intelligence VPN Hacking Firewall 132

Security Affairs

JANUARY 24, 2024

Akira ransomware infections were first reported in Finland in June 2023, however, in December the number of attacks increased. The ransomware attack reported in late 2023, targeted organizations’ networks using poorly secured VPN gateway on Cisco ASA or FTD devices.

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Ransomware VPN Government Retail 140

Security Affairs

JANUARY 11, 2024

Ivanti revealed that two threat actors are exploiting two zero-day vulnerabilities in its Connect Secure (ICS) and Policy Secure. The flaw CVE-2023-46805 (CVSS score 8.2) x and Ivanti Policy Secure. According to KB Article , customers can mitigate CVE-2023-46805 and CVE-2024-21887 by importing mitigation.release.20240107.1.xml

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Authentication VPN Mobile Hacking 128

Security Affairs

SEPTEMBER 10, 2023

US CISA added critical Apache RocketMQ flaw to its Known Exploited Vulnerabilities catalog Ragnar Locker gang leaks data stolen from the Israel’s Mayanei Hayeshua hospital North Korea-linked threat actors target cybersecurity experts with a zero-day Zero-day in Cisco ASA and FTD is actively exploited in ransomware attacks Nation-state actors (..)

DDOS 133

DDOS VPN Data breaches Cybercrime 133

Security Affairs

FEBRUARY 6, 2024

“The Ministry of Defence (MOD) of the Netherlands was impacted in 2023 by an intrusion into one of its networks. reads the advisory published by the security vendor. The effects of the attack were limited because of the network segmentation implemented in the government infrastructure.

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Malware Firmware VPN Backups 138