CISA Exploited Vulnerabilities

Vendor: Juniper | Product: Junos OS | Juniper Junos OS on EX Series contains a PHP external variable modification vulnerability that allows an unauthenticated, network-based attacker to control certain, important environment variables. Using a crafted request an attacker is able to modify certain PHP environment variables, leading to partial loss of integrity, which may allow chaining to other vulnerabilities. | Required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. | Federal remediation due: 2023-11-17

Vendor: Juniper | Product: Junos OS | Juniper Junos OS on EX Series and SRX Series contains a PHP external variable modification vulnerability that allows an unauthenticated, network-based attacker to control an important environment variable. Using a crafted request, which sets the variable PHPRC, an attacker is able to modify the PHP execution environment allowing the injection und execution of code. | Required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. | Federal remediation due: 2023-11-17

Vendor: Juniper | Product: Junos OS | Juniper Junos OS on SRX Series contains a missing authentication for critical function vulnerability that allows an unauthenticated, network-based attacker to cause limited impact to the file system integrity. With a specific request to user.php that doesn't require authentication, an attacker is able to upload arbitrary files via J-Web, leading to a loss of integrity for a certain part of the file system, which may allow chaining to other vulnerabilities. | Required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. | Federal remediation due: 2023-11-17

Vendor: Juniper | Product: Junos OS | Juniper Junos OS on EX Series contains a missing authentication for critical function vulnerability that allows an unauthenticated, network-based attacker to cause limited impact to the file system integrity. With a specific request to installAppPackage.php that doesn't require authentication, an attacker is able to upload arbitrary files via J-Web, leading to a loss of integrity for a certain part of the file system, which may allow chaining to other vulnerabilities. | Required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. | Federal remediation due: 2023-11-17

Vendor: Juniper | Product: Junos OS | Juniper Junos OS on SRX Series contains a missing authentication for critical function vulnerability that allows an unauthenticated, network-based attacker to cause limited impact to the file system integrity. With a specific request to webauth_operation.php that doesn't require authentication, an attacker is able to upload arbitrary files via J-Web, leading to a loss of integrity for a certain part of the file system, which may allow chaining to other vulnerabilities. | Required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. | Federal remediation due: 2023-11-17

Vendor: IETF | Product: Service Location Protocol (SLP) | The Service Location Protocol (SLP) contains a denial-of-service (DoS) vulnerability that could allow an unauthenticated, remote attacker to register services and use spoofed UDP traffic to conduct a denial-of-service (DoS) attack with a significant amplification factor. | Required action: Apply mitigations per vendor instructions or disable SLP service or port 427/UDP on all systems running on untrusted networks, including those directly connected to the Internet. | Federal remediation due: 2023-11-29

Vendor: Atlassian | Product: Confluence Data Center and Server | Atlassian Confluence Data Center and Server contain an improper authorization vulnerability that can result in significant data loss when exploited by an unauthenticated attacker. There is no impact on confidentiality since the attacker cannot exfiltrate any data. | Required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. | Federal remediation due: 2023-11-28

Vendor: Apache | Product: ActiveMQ | Apache ActiveMQ contains a deserialization of untrusted data vulnerability that may allow a remote attacker with network access to a broker to run shell commands by manipulating serialized class types in the OpenWire protocol to cause the broker to instantiate any class on the classpath. | Required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. | Federal remediation due: 2023-11-23

Vendor: F5 | Product: BIG-IP Configuration Utility | F5 BIG-IP Configuration utility contains an SQL injection vulnerability that may allow an authenticated attacker with network access through the BIG-IP management port and/or self IP addresses to execute system commands. This vulnerability can be used in conjunction with CVE-2023-46747. | Required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. | Federal remediation due: 2023-11-21

Vendor: F5 | Product: BIG-IP Configuration Utility | F5 BIG-IP Configuration utility contains an authentication bypass using an alternate path or channel vulnerability due to undisclosed requests that may allow an unauthenticated attacker with network access to the BIG-IP system through the management port and/or self IP addresses to execute system commands. This vulnerability can be used in conjunction with CVE-2023-46748. | Required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. | Federal remediation due: 2023-11-21

Vendor: Cisco | Product: Cisco IOS XE Web UI | Cisco IOS XE contains a command injection vulnerability in the web user interface. When chained with CVE-2023-20198, the attacker can leverage the new local user to elevate privilege to root and write the implant to the file system. Cisco identified CVE-2023-20273 as the vulnerability exploited to deploy the implant. CVE-2021-1435, previously associated with the exploitation events, is no longer believed to be related to this activity. | Required action: Verify that instances of Cisco IOS XE Web UI are in compliance with BOD 23-02 and apply mitigations per vendor instructions. For affected products (Cisco IOS XE Web UI exposed to the internet or to untrusted networks), follow vendor instructions to determine if a system may have been compromised and immediately report positive findings to CISA. | Federal remediation due: 2023-10-27

Vendor: Citrix | Product: NetScaler ADC and NetScaler Gateway | Citrix NetScaler ADC and NetScaler Gateway contain a buffer overflow vulnerability that allows for sensitive information disclosure when configured as a Gateway (VPN virtual server, ICA Proxy, CVPN, RDP Proxy) or AAA virtual server. | Required action: Apply mitigations and kill all active and persistent sessions per vendor instructions [https://www.netscaler.com/blog/news/cve-2023-4966-critical-security-update-now-available-for-netscaler-adc-and-netscaler-gateway/] OR discontinue use of the product if mitigations are unavailable. | Federal remediation due: 2023-11-08

Vendor: Cisco | Product: IOS XE Web UI | Cisco IOS XE Web UI contains a privilege escalation vulnerability in the web user interface that could allow a remote, unauthenticated attacker to create an account with privilege level 15 access. The attacker can then use that account to gain control of the affected device. | Required action: Verify that instances of Cisco IOS XE Web UI are in compliance with BOD 23-02 and apply mitigations per vendor instructions. For affected products (Cisco IOS XE Web UI exposed to the internet or to untrusted networks), follow vendor instructions to determine if a system may have been compromised and immediately report positive findings to CISA. | Federal remediation due: 2023-10-20

Vendor: Cisco | Product: IOS and IOS XE | Cisco IOS and IOS XE contain an out-of-bounds write vulnerability in the Group Encrypted Transport VPN (GET VPN) feature that could allow an authenticated, remote attacker who has administrative control of either a group member or a key server to execute malicious code or cause a device to crash. | Required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. | Federal remediation due: 2023-10-31