Zero-Day Attacks Exploited Critical Vulnerability in Citrix ADC and Gateway

Threat actors linked to the RansomHub ransomware group encrypted and exfiltrated data from at least 210 victims since its inception in February 2024, the U.S. government said. The victims span various sectors, including water and wastewater, information technology, government services and facilities, healthcare and public health, emergency services, food and agriculture, financial services,

U.S. cybersecurity and intelligence agencies have called out an Iranian hacking group for breaching multiple organizations across the country and coordinating with affiliates to deliver ransomware. The activity has been linked to a threat actor dubbed Pioneer Kitten, which is also known as Fox Kitten, Lemon Sandstorm (formerly Rubidium), Parisite, and UNC757, which it described as connected to

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) has added six security flaws to its Known Exploited Vulnerabilities (KEV) catalog, citing evidence of active exploitation. This includes CVE-2023-27524 (CVSS score: 8.9), a high-severity vulnerability impacting the Apache Superset open-source data visualization software that could enable remote code execution.

A recently disclosed critical flaw in Citrix NetScaler ADC and Gateway devices is being exploited by threat actors to conduct a credential harvesting campaign. IBM X-Force, which uncovered the activity last month, said adversaries exploited "CVE-2023-3519 to attack unpatched NetScaler Gateways to insert a malicious script into the HTML content of the authentication web page to capture user

Unpatched Citrix NetScaler systems exposed to the internet are being targeted by unknown threat actors in what's suspected to be a ransomware attack. Cybersecurity company Sophos is tracking the activity cluster under the moniker STAC4663. Attack chains involve the exploitation of CVE-2023-3519, a critical code injection vulnerability impacting NetScaler ADC and Gateway servers that could

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) has added a critical security flaw in Citrix ShareFile storage zones controller to its Known Exploited Vulnerabilities (KEV) catalog, based on evidence of active in-the-wild exploitation. Tracked as CVE-2023-24489 (CVSS score: 9.8), the shortcoming has been described as an improper access control bug that, if successfully exploited

Categories: Exploits and vulnerabilities Categories: News Tags: Citrix Tags: NetScalers Tags: Germany Tags: CVE-2023-3519 Tags: Fox-IT Tags: DIVD Researchers have found almost 2000 backdoored Citrix NetScalers, many of which were patched after the backdoor in the form of a web shell was dropped. (Read more...) The post Citrix NetScalers backdoored in widespread exploitation campaign appeared first on Malwarebytes Labs.

Nearly 2,000 Citrix NetScaler instances have been compromised with a backdoor by weaponizing a recently disclosed critical security vulnerability as part of a large-scale attack. "An adversary appears to have exploited CVE-2023-3519 in an automated fashion, placing web shells on vulnerable NetScalers to gain persistent access," NCC Group said in an advisory released Tuesday. "The adversary can

A vulnerability exists within Citrix ADC that allows an unauthenticated attacker to trigger a stack buffer overflow of the nsppe process by making a specially crafted HTTP GET request. Successful exploitation results in remote code execution as root.

Hundreds of Citrix NetScaler ADC and Gateway servers have been breached by malicious actors to deploy web shells, according to the Shadowserver Foundation. The non-profit said the attacks take advantage of CVE-2023-3519, a critical code injection vulnerability that could lead to unauthenticated remote code execution. The flaw, patched by Citrix last month, carries a CVSS score of 9.8. The

Plus: Mozilla fixes two high-severity bugs in Firefox, Citrix fixes a flaw that was used to attack a US-based critical infrastructure organization, and Oracle patches over 500 vulnerabilities.

Categories: Exploits and vulnerabilities Categories: News Tags: Citrix Tags: NetScaler Tags: CVE-2023-3519 Tags: web shell A critical unauthenticated remote code execution vulnerability in Citrix NetScaler ADC and Citrix NetScaler Gateway is being actively exploited (Read more...) The post CISA: You've got two weeks to patch Citrix NetScaler vulnerability CVE-2023-3519 appeared first on Malwarebytes Labs.

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) issued an advisory on Thursday warning that the newly disclosed critical security flaw in Citrix NetScaler Application Delivery Controller (ADC) and Gateway devices is being abused to drop web shells on vulnerable systems. "In June 2023, threat actors exploited this vulnerability as a zero-day to drop a web shell on a critical

Adobe ColdFusion versions 2018u17 (and earlier), 2021u7 (and earlier) and 2023u1 (and earlier) are affected by a Deserialization of Untrusted Data vulnerability that could result in Arbitrary code execution. Exploitation of this issue does not require user interaction.

Adobe has released a fresh round of updates to address an incomplete fix for a recently disclosed ColdFusion flaw that has come under active exploitation in the wild. The critical shortcoming, tracked as CVE-2023-38205 (CVSS score: 7.5), has been described as an instance of improper access control that could result in a security bypass. It impacts the following versions: ColdFusion 2023 (Update

Unauthenticated remote code execution

Threat actors are actively exploiting a recently disclosed critical security flaw in the WooCommerce Payments WordPress plugin as part of a massive targeted campaign. The flaw, tracked as CVE-2023-28121 (CVSS score: 9.8), is a case of authentication bypass that enables unauthenticated attackers to impersonate arbitrary users and perform some actions as the impersonated user, including an

Threat actors are actively exploiting a recently disclosed critical security flaw in the WooCommerce Payments WordPress plugin as part of a massive targeted campaign. The flaw, tracked as CVE-2023-28121 (CVSS score: 9.8), is a case of authentication bypass that enables unauthenticated attackers to impersonate arbitrary users and perform some actions as the impersonated user, including an

Threat actors are actively exploiting a recently disclosed critical security flaw in the WooCommerce Payments WordPress plugin as part of a massive targeted campaign. The flaw, tracked as CVE-2023-28121 (CVSS score: 9.8), is a case of authentication bypass that enables unauthenticated attackers to impersonate arbitrary users and perform some actions as the impersonated user, including an

Adobe ColdFusion versions 2018u16 (and earlier), 2021u6 (and earlier) and 2023.0.0.330468 (and earlier) are affected by an Improper Access Control vulnerability that could result in a Security feature bypass. An attacker could leverage this vulnerability to access the administration CFM and CFC endpoints. Exploitation of this issue does not require user interaction.

An issue in WooCommerce Payments plugin for WordPress (versions 5.6.1 and lower) allows an unauthenticated attacker to send requests on behalf of an elevated user, like administrator. This allows a remote, unauthenticated attacker to gain admin access on a site that has the affected version of the plugin activated.