K24301698: TMUI XSS vulnerability CVE-2021-23027

Security Advisory Description A DOM based cross-site scripting XSS vulnerability exists in an undisclosed page of the BIG-IP Configuration utility that allows an attacker to execute JavaScript in the context of the currently logged-in user. CVE-2021-23027 Impact An attacker may exploit this...

K61367237: BIG-IP HTTP/3 QUIC vulnerability CVE-2020-5859

Security Advisory Description Specially formatted HTTP/3 messages may cause the Traffic Management Microkernel TMM to produce a core file. CVE-2020-5859 Impact TMM may restart and temporarily fail to process traffic on BIG-IP hosts with the HTTP/3 QUIC profile configured. High availability HA...

K53593534: BIG-IP ASM and F5 Advanced WAF attack signature check failure on certain HTTP requests

Security Advisory Description The BIG-IP ASM and F5 Advanced Web Application Firewall Advanced WAF attack signature check may fail to detect and block certain HTTP requests. Impact The attack signature check fails to detect and block such requests, as expected of a security policy. Symptoms As a...

K35421172: Excess resource consumption due to low MSS values vulnerability CVE-2019-11479

Security Advisory Description Jonathan Looney discovered that the Linux kernel default MSS is hard-coded to 48 bytes. This allows a remote peer to fragment TCP resend queues significantly more than if a larger MSS were enforced. A remote attacker could use this to cause a denial of service. This...

K40084114: Overview of F5 vulnerabilities (January 2022)

Security Advisory Description On January 19, 2022, F5 announced the following security issues. This document is intended to serve as an overview of these vulnerabilities and security exposures to help determine the impact to your F5 devices. You can find the details of each issue in the associate...

K75432956: BIG-IP ASM vulnerability CVE-2018-5539

Security Advisory Description Under certain conditions, on F5 BIG-IP ASM 13.0.0-13.1.0.7, 12.1.0-12.1.3.5, 11.6.0-11.6.3.1, 11.5.1-11.5.6, or 11.2.1, when processing CSRF protections, the BIG-IP ASM bd process may restart and produce a core file. CVE-2018-5539 Impact BIG-IP The affected BIG-IP AS...

K26618426: Linux SACK Slowness vulnerability CVE-2019-11478

Security Advisory Description Jonathan Looney discovered that the TCP retransmission queue implementation in tcpfragment in the Linux kernel could be fragmented when handling certain TCP Selective Acknowledgment SACK sequences. A remote attacker could use this to cause a denial of service. This h...

K30911244: Advanced WAF, BIG-IP ASM, and NGINX App Protect attack signature check failure

Security Advisory Description The F5 Advanced Web Application Firewall Advanced WAF, BIG-IP ASM, and NGINX App Protect attack signature check may fail to detect and block certain HTTP requests when some signatures are disabled on the security policy and wildcard header. Impact The attack signatur...

K05263202: BIG-IP IPsec tunnel endpoint vulnerability CVE-2017-6156

Security Advisory Description When the BIG-IP system is configured with a wildcard IPsec tunnel endpoint, it may allow a remote attacker to disrupt or impersonate the tunnels that have completed phase 1 IPsec negotiations. The attacker must possess the necessary credentials to negotiate the phase...

K12685114: BIG-IP REST vulnerability CVE-2016-6249

Security Advisory Description F5 BIG-IP 12.0.0 and 11.5.0 - 11.6.1 REST requests which timeout during user account authentication may log sensitive attributes such as passwords in plaintext to /var/log/restjavad.0.log. It may allow local users to obtain sensitive information by reading these file...

K63312282: BIG-IP LTM HTTP/2 desync attacks: request line injection

Security Advisory Description Multiple desync attacks have been discovered. For more information refer to the following related articles: K27144609: Overview of HTTP/2 desync attacks K30341203: BIG-IP LTM and NGINX are not exposed to certain desync attacks K97045220: BIG-IP LTM HTTP/2 desync...

K44808538: BIG-IP APM SAML SLO vulnerability CVE-2020-5934

Security Advisory Description When multiple HTTP requests from the same client to configured SAML Single Logout SLO URL are passing through a TCP Keep-Alive connection, traffic to the Traffic Management Microkernel TMM can be disrupted. CVE-2020-5934 Impact A remote attacker may be able to cause ...

K67397230: BIG-IP ASM, F5 Advanced WAF, and NGINX App Protect normalizing security exposure

Security Advisory Description The BIG-IP ASM, F5 Advanced Web Application Firewall Advanced WAF, and NGINX App Protect systems incorrectly normalize undisclosed strings. Impact The attack signature check fails to detect and block such requests, as expected of a security policy. Symptoms As a resu...

K68816502: A BIG-IP LTM policy referencing an external data group may not match traffic

Security Advisory Description A BIG-IP LTM policy referencing an external data group may not match traffic. This issue occurs when the following conditions are met: The virtual server is configured with a BIG-IP LTM policy and an external data group. The BIG-IP system reboots or the Traffic...

K22441651: BIG-IP TMUI XSS vulnerability CVE-2019-6657

Security Advisory Description A reflected cross-site scripting XSS vulnerability exists in an undisclosed page of the BIG-IP Traffic Management User Interface TMUI, also known as the BIG-IP Configuration utility. CVE-2019-6657 Impact An attacker may exploit this vulnerability using a crafted URL ...

K61705126: BIG-IP APM apd vulnerability CVE-2019-6661

Security Advisory Description When the BIG-IP APM system processes certain requests, the apd/apmd process may consume excessive resources. CVE-2019-6661 Impact BIG-IP APM When this vulnerability is exploited, the BIG-IP APM system may experience excessive resource consumption, which may cause one...

K52145254: TMUI RCE vulnerability CVE-2020-5902

Security Advisory Description The Traffic Management User Interface TMUI, also referred to as the Configuration utility, has a Remote Code Execution RCE vulnerability in undisclosed pages. CVE-2020-5902 Impact This vulnerability allows for unauthenticated attackers, or authenticated users, with...

K43470422: BIG-IP MPTCP vulnerability CVE-2021-23003

Security Advisory Description The Traffic Management Microkernel TMM process may produce a core file when undisclosed MPTCP traffic passes through a standard virtual server. CVE-2021-23003 Impact A remote attacker may be able to cause the BIG-IP system to produce a core file, disrupting the flow ...

K43638305: BIG-IP TMUI XSS vulnerability CVE-2020-5903

Security Advisory Description A Cross-Site Scripting XSS vulnerability exists in an undisclosed page of the BIG-IP Configuration utility. CVE-2020-5903 Impact An attacker can exploit this vulnerability to run JavaScript in the context of the currently logged-in user. In the case of an...

K54252492: Side-channel processor vulnerability CVE-2018-3693

Security Advisory Description Systems with microprocessors utilizing speculative execution and branch prediction may allow unauthorized disclosure of information to an attacker with local user access via a speculative buffer overflow and side-channel analysis. CVE-2018-3693 also known as Spectre ...