WebRTC FEC Processing Overflow

There are several calls to memcpy that can overflow the destination buffer in webrtc::UlpfecReceiverImpl::AddReceivedRedPacket. The method takes a parameter incoming_rtp_packet, which is an RTP packet with a mac length that is defined by the transport (2048 bytes for DTLS in Chrome). This packet is then copied to the received_packet in several locations in the method, depending on packet properties, using the lenth of the incoming_rtp_packet as the copy length. The received_packet is a ForwardErrorCorrection::ReceivedPacket, which has a max size of 1500. Therefore, the memcpy calls in this method can overflow this buffer.

Link: https://packetstormsecurity.com/files/148762/GS20180731235404.tgz

Red Hat Security Advisory 2018-2321-01

Red Hat Security Advisory 2018-2321-01 – The redhat-virtualization-host packages provide the Red Hat Virtualization Host. These packages include redhat-release-virtualization-host, ovirt-node, and rhev-hypervisor. Red Hat Virtualization Hosts are installed using a special build of Red Hat Enterprise Linux with only the packages required to host virtual machines. RHVH features a Cockpit user interface for monitoring the host’s resources and performing administrative tasks. The ovirt-node-ng packages provide the Red Hat Virtualization Host. These packages include redhat-release-virtualization-host, ovirt-node, and rhev-hypervisor. Red Hat Virtualization Hosts are installed using a special build of Red Hat Enterprise Linux with only the packages required to host virtual machines. RHVH features a Cockpit user interface for monitoring the host’s resources and performing administrative tasks. Issues addressed include a code execution vulnerability.

Link: https://packetstormsecurity.com/files/148760/RHSA-2018-2321-01.txt

Falco 0.11.1

Sysdig falco is a behavioral activity monitoring agent that is open source and comes with native support for containers. Falco lets you define highly granular rules to check for activities involving file and network activity, process execution, IPC, and much more, using a flexible syntax. Falco will notify you when these rules are violated. You can think about falco as a mix between snort, ossec and strace.

Link: https://packetstormsecurity.com/files/148764/falco-0.11.1.tar.gz

Ridrelay – Quick And Easy Way To Get Domain Usernames While On An Internal Network

Enumerate usernames on a domain where you have no creds by using SMB Relay with low priv. Quick and easy way to get domain usernames while on an internal network.How it worksRidRelay combines the SMB Relay attack, common lsarpc based queries and RID cycling to get a list of domain usernames. It takes these steps:Spins up an SMB server and waits for an incoming SMB connectionThe incoming credentials are relayed to a specified target, creating a connection with the context of the relayed userQueries are made down the SMB connection to the lsarpc pipe to get the list of domain usernames. This is done by cycling up to 50000 RIDs(For best results, use with Responder)DependenciesPython 2.7 (sorry but impacket doesn’t play nice with 3 🙁 )Impacket v0.9.17 or aboveInstallationpipenv install –twopipenv shell# Optional: Run if installing impacketgit submodule update –init –recursivecd submodules/impacketpython setup.py installcd ../..UsageFirst, find a target host to relay to. The target must be a member of the domain and MUST have SMB Signin off. CrackMapExec can get this info for you very quick!Start RidRelay pointing to the target:python ridrelay.py -t 10.0.0.50ORAlso output usernames to filepython ridrelay.py -t 10.0.0.50 -o path_to_output.txtHighly Recommended: Start Responder to trick users to connecting to RidRelayTODO:Add password policy enumerationDynamic relaying based on where incoming creds have admin rightsGetting active sessions???Connect with Bloodhound???Download Ridrelay

Link: http://feedproxy.google.com/~r/PentestTools/~3/uE1MZB_OpLI/ridrelay-quick-and-easy-way-to-get.html