K78234183: Linux SACK Panic vulnerability CVE-2019-11477

Security Advisory Description Jonathan Looney discovered that the TCPSKBCBskb-tcpgsosegs value was subject to an integer overflow in the Linux kernel when handling TCP Selective Acknowledgments SACKs. A remote attacker could use this to cause a denial of service. This has been fixed in stable...

K28042514: BIG-IP TMM and DNS profile vulnerability CVE-2022-23017

Security Advisory Description When a virtual server is configured with a DNS profile with the Rapid Response Mode setting enabled and is configured on a BIG-IP system, undisclosed requests can cause the Traffic Management Microkernel TMM to terminate. CVE-2022-23017 Impact System performance can...

K89509323: REST Framework vulnerability CVE-2019-6651

Security Advisory Description The BIG-IP/BIG-IQ Configuration utility login page may not follow best security practices when handling a malicious request. CVE-2019-6651 Impact The Configuration utility login page returns an inconsistent HTTP response when processing modified requests which may...

K59904248: iControl SOAP vulnerability CVE-2022-29474

Security Advisory Description A directory traversal vulnerability exists in iControl SOAP that allows an authenticated attacker with at least guest role privileges to read wsdl files in the BIG-IP file system. CVE-2022-29474 Impact An authenticated attacker with at least guest role privileges may...

K25400442: TMM vulnerability CVE-2020-5931

Security Advisory Description Virtual servers with a OneConnect profile may incorrectly handle WebSockets related HTTP response headers, causing the Traffic Management Microkernel TMM to restart. CVE-2020-5931 Impact An attacker may be able to perform a denial-of-service DoS attack on a BIG-IP...

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...

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...

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...

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...

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...

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 ...

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 ...