CISA Known Exploited Vulnerabilities

This dashboard displays the latest vulnerabilities published by the Cybersecurity & Infrastructure Security Agency (CISA).

CVE-2023-20273

Cisco IOS XE Web UI Command Injection Vulnerability

Vendor: Cisco

Product: Cisco IOS XE Web UI

Added: 2023-10-23

Due Date: 2023-10-27

Description:

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.

CWEs:

CWE-78

CVE-2023-4966

Ransomware

Citrix NetScaler ADC and NetScaler Gateway Buffer Overflow Vulnerability

Vendor: Citrix

Product: NetScaler ADC and NetScaler Gateway

Added: 2023-10-18

Due Date: 2023-11-08

Description:

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.

CWEs:

CWE-119

CVE-2023-20198

Cisco IOS XE Web UI Privilege Escalation Vulnerability

Vendor: Cisco

Product: IOS XE Web UI

Added: 2023-10-16

Due Date: 2023-10-20

Description:

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.

CWEs:

CWE-420

CVE-2023-21608

Adobe Acrobat and Reader Use-After-Free Vulnerability

Vendor: Adobe

Product: Acrobat and Reader

Added: 2023-10-10

Due Date: 2023-10-31

Description:

Adobe Acrobat and Reader contains a use-after-free vulnerability that allows for code execution in the context of the current user.

Required Action:

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

CWEs:

CWE-416

CVE-2023-20109

Cisco IOS and IOS XE Group Encrypted Transport VPN Out-of-Bounds Write Vulnerability

Vendor: Cisco

Product: IOS and IOS XE

Added: 2023-10-10

Due Date: 2023-10-31

Description:

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.

CWEs:

CWE-787

CVE-2023-41763

Microsoft Skype for Business Privilege Escalation Vulnerability

Vendor: Microsoft

Product: Skype for Business

Added: 2023-10-10

Due Date: 2023-10-31

Description:

Microsoft Skype for Business contains an unspecified vulnerability that allows for privilege escalation.

Required Action:

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

CWEs:

CWE-918

CVE-2023-36563

Microsoft WordPad Information Disclosure Vulnerability

Vendor: Microsoft

Product: WordPad

Added: 2023-10-10

Due Date: 2023-10-31

Description:

Microsoft WordPad contains an unspecified vulnerability that allows for information disclosure.

Required Action:

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

CWEs:

CWE-20

CVE-2023-44487

HTTP/2 Rapid Reset Attack Vulnerability

Vendor: IETF

Product: HTTP/2

Added: 2023-10-10

Due Date: 2023-10-31

Description:

HTTP/2 contains a rapid reset vulnerability that allows for a distributed denial-of-service attack (DDoS).

Required Action:

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

CWEs:

CWE-400

CVE-2023-22515

Ransomware

Atlassian Confluence Data Center and Server Broken Access Control Vulnerability

Vendor: Atlassian

Product: Confluence Data Center and Server

Added: 2023-10-05

Due Date: 2023-10-13

Description:

Atlassian Confluence Data Center and Server contains a broken access control vulnerability that allows an attacker to create unauthorized Confluence administrator accounts and access Confluence.

Required Action:

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. Check all affected Confluence instances for evidence of compromise per vendor instructions and report any positive findings to CISA.

CVE-2023-40044

Ransomware

Progress WS_FTP Server Deserialization of Untrusted Data Vulnerability

Vendor: Progress

Product: WS_FTP Server

Added: 2023-10-05

Due Date: 2023-10-26

Description:

Progress WS_FTP Server contains a deserialization of untrusted data vulnerability in the Ad Hoc Transfer module that allows an authenticated attacker to execute remote commands on the underlying operating system.

Required Action:

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

CWEs:

CWE-502

CVE-2023-42824

Apple iOS and iPadOS Kernel Privilege Escalation Vulnerability

Vendor: Apple

Product: iOS and iPadOS

Added: 2023-10-05

Due Date: 2023-10-26

Description:

Apple iOS and iPadOS contain an unspecified vulnerability that allows for local privilege escalation.

Required Action:

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

CVE-2023-42793

Ransomware

JetBrains TeamCity Authentication Bypass Vulnerability

Vendor: JetBrains

Product: TeamCity

Added: 2023-10-04

Due Date: 2023-10-25

Description:

JetBrains TeamCity contains an authentication bypass vulnerability that allows for remote code execution on TeamCity Server.

Required Action:

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

CWEs:

CWE-288

CVE-2023-28229

Microsoft Windows CNG Key Isolation Service Privilege Escalation Vulnerability

Vendor: Microsoft

Product: Windows CNG Key Isolation Service

Added: 2023-10-04

Due Date: 2023-10-25

Description:

Microsoft Windows Cryptographic Next Generation (CNG) Key Isolation Service contains an unspecified vulnerability that allows an attacker to gain specific limited SYSTEM privileges.

Required Action:

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

CWEs:

CWE-591

CVE-2023-4211

Arm Mali GPU Kernel Driver Use-After-Free Vulnerability

Vendor: Arm

Product: Mali GPU Kernel Driver

Added: 2023-10-03

Due Date: 2023-10-24

Description:

Arm Mali GPU Kernel Driver contains a use-after-free vulnerability that allows a local, non-privileged user to make improper GPU memory processing operations to gain access to already freed memory.

Required Action:

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

CWEs:

CWE-416

CVE-2023-5217

Google Chromium libvpx Heap Buffer Overflow Vulnerability

Vendor: Google

Product: Chromium libvpx

Added: 2023-10-02

Due Date: 2023-10-23

Description:

Google Chromium libvpx contains a heap buffer overflow vulnerability in vp8 encoding that allows a remote attacker to potentially exploit heap corruption via a crafted HTML page. This vulnerability could impact web browsers using libvpx, including but not limited to Google Chrome.

Required Action:

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

CWEs:

CWE-787