K11155549: IPSEC vulnerability CVE-2019-14899

Security Advisory Description A vulnerability was discovered in Linux, FreeBSD, OpenBSD, MacOS, iOS, and Android that allows a malicious access point, or an adjacent user, to determine if a connected user is using a VPN, make positive inferences about the websites they are visiting, and determine...

K81137982: TMM vulnerability CVE-2017-6136

Security Advisory Description Undisclosed traffic patterns sent to BIG-IP virtual servers, with the TCP Fast Open and Tail Loss Probe options enabled in the associated TCP profile, may cause a disruption of service to the Traffic Management Microkernel TMM. CVE-2017-6136 Impact An attacker may be...

K45062506: Siemens Ethernet card DoS vulnerabilities CVE-2018-11451 and CVE-2018-11452

Security Advisory Description CVE-2018-11451 A vulnerability has been identified in Firmware variant IEC 61850 for EN100 Ethernet module All versions V4.33, Firmware variant PROFINET IO for EN100 Ethernet module All versions, Firmware variant Modbus TCP for EN100 Ethernet module All versions,...

K04897373: BIG-IP TMM vulnerability CVE-2019-6678

Security Advisory Description When the tm.minipfragsize BigDB variable is modified from the default value to a value less than 60 and the packet filter feature is enabled, specifically crafted fragmented TCP packets may cause the Traffic Management Microkernel TMM to fail and restart. CVE-2019-66...

K04054286: Linux kernel TCP vulnerability CVE-2016-2070

Security Advisory Description The tcpcwndreduction function in net/ipv4/tcpinput.c in the Linux kernel before 4.3.5 allows remote attackers to cause a denial of service divide-by-zero error and system crash via crafted TCP traffic. CVE-2016-2070 Impact Successful exploitation of this vulnerabilit...

K74009656: BIND vulnerability CVE-2018-5743

Security Advisory Description By design, BIND is intended to limit the number of TCP clients that can be connected at any given time. The number of allowed connections is a tunable parameter which, if unset, defaults to a conservative value for most servers. Unfortunately, the code which was...

K52494562: BIG-IP software SYN cookies vulnerability CVE-2022-36795

Security Advisory Description When an LTM TCP profile configured on a virtual server has the Auto Receive Window option enabled, undisclosed traffic can cause the virtual server to stop processing new client connections. CVE-2022-36795 Impact Traffic is disrupted for new IP requests. This...

K16883: TCP sequence number vulnerability CVE-1999-0077

Security Advisory Description Predictable TCP sequence numbers allow spoofing. CVE-1999-0077 Impact There is no impact; F5 products are not affected by this vulnerability. Security Advisory Status To determine if your release is known to be vulnerable, the components or features that are affected...

K15304: Linux kernel tcp_rcv_state_process vulnerability CVE-2012-6638

Security Advisory Description The tcprcvstateprocess function in net/ipv4/tcpinput.c in the Linux kernel before 3.2.24 allows remote attackers to cause a denial of service kernel resource consumption via a flood of SYN+FIN TCP packets. CVE-2012-6638 Impact Remote attackers may be able to cause a...

K13233: TMM vulnerability CVE-2013-6016

Security Advisory Description The BIG-IP system may incorrectly transition a TCP connection to an ESTABLISHED state prior to receiving the appropriate ACK packet for the connection. As a result of this issue, you may encounter the following symptoms: The BIG-IP system sends a SIGFPE signal to the...

K3126: Large TCP window sizes may make it easier to predict sequence numbers vulnerability CVE-2004-0230

Security Advisory Description Note : For information about signing up to receive security notice updates from F5, refer to K9970: Subscribing to email notifications regarding F5 products. Note : Versions that are not listed in this article have not been evaluated for vulnerability to this securit...

K15301: Linux kernel TCP ISN vulnerability CVE-2011-3188

Security Advisory Description The 1 IPv4 and 2 IPv6 implementations in the Linux kernel before 3.1 use a modified MD4 algorithm to generate sequence numbers and Fragment Identification values, which makes it easier for remote attackers to cause a denial of service disrupted networking or hijack...

K23278332: A DNS over TCP packet is not rate-limited accurately using the single-endpoint DoS device flood vector

Security Advisory Description This issue occurs when all of the following conditions are met: Setting the correct DNS packet type in the denial-of-service DoS device sweep or flood vector. Matching traffic sends DNS over TCP. Impact The mitigation for DNS over TCP packets is not working as expect...

K13421245: TMM vulnerability CVE-2017-6162

Security Advisory Description In F5 BIG-IP LTM, AAM, AFM, Analytics, APM, ASM, DNS, Edge Gateway, GTM, Link Controller, PEM, Websafe software version 12.0.0 to 12.1.2, 11.6.0 to 11.6.1, 11.4.0 to 11.5.4, 11.2.1, in some cases TMM may crash when processing TCP traffic. This vulnerability affects T...

2022 in review: DDoS attack trends and insights

As organizations strengthen their defenses and take a more proactive approach to protection, attackers are adapting their techniques and increasing the sophistication of their operations. Cybercrime continues to rise with the industrialization of the cybercrime economy providing cybercriminals wi...

2022 in review: DDoS attack trends and insights

As organizations strengthen their defenses and take a more proactive approach to protection, attackers are adapting their techniques and increasing the sophistication of their operations. Cybercrime continues to rise with the industrialization of the cybercrime economy providing cybercriminals wi...

Important: Red Hat Security Advisory: kpatch-patch security update

An update for kpatch-patch is now available for Red Hat Enterprise Linux 8. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability...

CVE-2023-26249

Knot Resolver before 5.6.0 enables attackers to consume its resources, launching amplification attacks and potentially causing a denial of service. Specifically, a single client query may lead to a hundred TCP connection attempts if a DNS server closes connections without providing a response...

UBUNTU-CVE-2023-26249

Knot Resolver before 5.6.0 enables attackers to consume its resources, launching amplification attacks and potentially causing a denial of service. Specifically, a single client query may lead to a hundred TCP connection attempts if a DNS server closes connections without providing a response...

CVE-2023-26249

Knot Resolver before 5.6.0 enables attackers to consume its resources, launching amplification attacks and potentially causing a denial of service. Specifically, a single client query may lead to a hundred TCP connection attempts if a DNS server closes connections without providing a response...