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 has been fixed in stable kernel releases 4.4.182, 4.9.182, 4.14.127, 4.19.52, 5.1.11, and is fixed in commits 967c05aee439e6e5d7d805e195b3a20ef5c433d6 and 5f3e2bf008c2221478101ee72f5cb4654b9fc363.

Citrix Application Delivery Management (ADM) 12.1.x before 12.1.50.33 has Incorrect Access Control.

If an application encounters a fatal protocol error and then calls SSL_shutdown() twice (once to send a close_notify, and once to receive one) then OpenSSL can respond differently to the calling application if a 0 byte record is received with invalid padding compared to if a 0 byte record is received with an invalid MAC. If the application then behaves differently based on that in a way that is detectable to the remote peer, then this amounts to a padding oracle that could be used to decrypt data. In order for this to be exploitable "non-stitched" ciphersuites must be in use. Stitched ciphersuites are optimised implementations of certain commonly used ciphersuites. Also the application must call SSL_shutdown() twice even if a protocol error has occurred (applications should not do this but some do anyway). Fixed in OpenSSL 1.0.2r (Affected 1.0.2-1.0.2q).

Linux kernel versions 4.9+ can be forced to make very expensive calls to tcp_collapse_ofo_queue() and tcp_prune_ofo_queue() for every incoming packet which can lead to a denial of service.

An attacker may be able to cause a denial-of-service (DoS) attack against the sshd component in F5 BIG-IP, Enterprise Manager, BIG-IQ, and iWorkflow.

F5 BIG-IP LTM, Analytics, APM, ASM, and Link Controller 11.2.x before 11.2.1 HF16, 11.3.x, 11.4.x, 11.5.x before 11.5.4 HF2, 11.6.x before 11.6.1 HF1, and 12.x before 12.0.0 HF3; BIG-IP AAM, AFM, and PEM 11.4.x, 11.5.x before 11.5.4 HF2, 11.6.x before 11.6.1 HF1, and 12.x before 12.0.0 HF3; BIG-IP DNS 12.x before 12.0.0 HF3; BIG-IP Edge Gateway, WebAccelerator, and WOM 11.2.x before 11.2.1 HF16 and 11.3.0; BIG-IP GTM 11.2.x before 11.2.1 HF16, 11.3.x, 11.4.x, 11.5.x before 11.5.4 HF2, and 11.6.x before 11.6.1 HF1; BIG-IP PSM 11.2.x before 11.2.1 HF16, 11.3.x, and 11.4.0 through 11.4.1; Enterprise Manager 3.1.1; BIG-IQ Cloud and Security 4.0.0 through 4.5.0; BIG-IQ Device 4.2.0 through 4.5.0; BIG-IQ ADC 4.5.0; BIG-IQ Centralized Management 5.0.0; BIG-IQ Cloud and Orchestration 1.0.0; and iWorkflow 2.0.0, when Packet Filtering is enabled on virtual servers and possibly self IP addresses, allow remote attackers to cause a denial of service (Traffic Management Microkernel restart) and pos…

The iControl REST service in F5 BIG-IP LTM, AAM, AFM, Analytics, APM, ASM, Link Controller, and PEM 11.5.x before 11.5.4, 11.6.x before 11.6.1, and 12.x before 12.0.0 HF3; BIG-IP DNS 12.x before 12.0.0 HF3; BIG-IP GTM 11.5.x before 11.5.4 and 11.6.x before 11.6.1; BIG-IQ Cloud and Security 4.0.0 through 4.5.0; BIG-IQ Device 4.2.0 through 4.5.0; BIG-IQ ADC 4.5.0; BIG-IQ Centralized Management 4.6.0; and BIG-IQ Cloud and Orchestration 1.0.0 allows remote authenticated administrators to obtain sensitive information via unspecified vectors.

F5 BIG-IP LTM, AFM, Analytics, APM, ASM, Link Controller, and PEM 11.3.x, 11.4.x before 11.4.1 HF10, 11.5.x before 11.5.4, 11.6.x before 11.6.1, and 12.x before 12.0.0 HF1; BIG-IP AAM 11.4.x before 11.4.1 HF10, 11.5.x before 11.5.4, 11.6.x before 11.6.1, and 12.x before 12.0.0 HF1; BIG-IP DNS 12.x before 12.0.0 HF1; BIG-IP Edge Gateway, WebAccelerator, and WOM 11.3.0; BIG-IP GTM 11.3.x, 11.4.x before 11.4.1 HF10, 11.5.x before 11.5.4, and 11.6.x before 11.6.1; BIG-IP PSM 11.3.x and 11.4.x before 11.4.1 HF10; Enterprise Manager 3.0.0 through 3.1.1; BIG-IQ Cloud and BIG-IQ Security 4.0.0 through 4.5.0; BIG-IQ Device 4.2.0 through 4.5.0; BIG-IQ ADC 4.5.0; BIG-IQ Centralized Management 4.6.0; and BIG-IQ Cloud and Orchestration 1.0.0 on the 3900, 6900, 8900, 8950, 11000, 11050, PB100 and PB200 platforms, when software SYN cookies are configured on virtual servers, allow remote attackers to cause a denial of service (High-Speed Bridge hang) via an invalid TCP segment.

dcoep in BIG-IP LTM, Analytics, APM, ASM, and Link Controller 11.2.0 through 11.6.0 and 12.0.0 before 12.0.0 HF1, BIG-IP AAM 11.4.0 through 11.6.0 and 12.0.0 before 12.0.0 HF1, BIG-IP AFM and PEM 11.3.0 through 11.6.0 and 12.0.0 before 12.0.0 HF1, BIG-IP DNS 12.0.0 before 12.0.0 HF1, BIG-IP Edge Gateway, WebAccelerator, and WOM 11.2.0 through 11.3.0, BIG-IP GTM 11.2.0 through 11.6.0, BIG-IP PSM 11.2.0 through 11.4.1, Enterprise Manager 3.0.0 through 3.1.1, BIG-IQ Cloud 4.0.0 through 4.5.0, BIG-IQ Device 4.2.0 through 4.5.0, BIG-IQ Security 4.0.0 through 4.5.0, BIG-IQ ADC 4.5.0, BIG-IQ Centralized Management 4.6.0, and BIG-IQ Cloud and Orchestration 1.0.0 allows local users with advanced shell (bash) access to gain privileges via unspecified vectors.

GNU Bash through 4.3 bash43-025 processes trailing strings after certain malformed function definitions in the values of environment variables, which allows remote attackers to write to files or possibly have unknown other impact via a crafted environment, as demonstrated by vectors involving the ForceCommand feature in OpenSSH sshd, the mod_cgi and mod_cgid modules in the Apache HTTP Server, scripts executed by unspecified DHCP clients, and other situations in which setting the environment occurs across a privilege boundary from Bash execution. NOTE: this vulnerability exists because of an incomplete fix for CVE-2014-6271.