Astra Linux - уязвимость в linux, linux-5.10

A guest can force the Linux netback driver to consume a large amount of kernel memory. This CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVEs. Incoming data packets for a guest in the Linux kernel’s netback driver are buffere...

Guest can force Linux netback driver to hog large amounts of kernel memory T[his CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] Incoming data packets for a guest in the Linux kernel's netback driver are buffered until the guest is ready to process them. There are some measures taken for avoiding to pile up too much data but those can be bypassed by the guest: There is a timeout how long the client side of an interface can stop consuming new packets before it is assumed to have stalled but this timeout is rather long (60 seconds by default). Using a UDP connection on a fast interface can easily accumulate gigabytes of data in that time. (CVE-2021-28715) The timeout could even never trigger if the guest manages to have only one free slot in its RX queue ring page and the next package would require more than one free slot which may be the case when using GSO XDP or software hashing. (CVE-2021-28714)

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UBUNTU-CVE-2021-28714

Guest can force Linux netback driver to hog large amounts of kernel memory This CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE. Incoming data packets for a guest in the Linux kernel's netback driver are buffered until the...

Microsoft Active Directory Federated Services (ADFS) User Enumeration

Credits: Joshua Platz aka Binary1985 + CVE ID: Requested + Website: https://github.com/binary1985 + Source: https://raw.githubusercontent.com/binary1985/VulnerabilityDisclosure/master/ADFS-Timing-Attack Vendor: ========================== http://www.microsoft.com Product: =========== Active...

ipfilter denial of service problem

Below is an ipfilter security issue, and my previous mail to author Darren was bounced back, so I think maybe I should mail it to this mailing list. Overview -- Anytime ipfilter see a packet with ACK bit set without the previous SYN, it will marked it as TCPSESTABLISHED in it's state table, and f...

CVE-1999-0770

CVE-1999-0770 affects Firewall-1, where a long timeout on connections that start with ACK/non-SYN packets enables a denial of service by mass connection attempts to unresponsive systems. Red Hat and CVE records corroborate the symptom; Nessus describes a remote DoS attack via the ACK/stream attac...

CVE-1999-0770

Firewall-1 sets a long timeout for connections that begin with ACK or other packets except SYN, allowing an attacker to conduct a denial of service via a large number of connection attempts to unresponsive systems...