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Red Hat Security Advisory 2017-0083-01
Posted Jan 18, 2017
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2017-0083-01 - Kernel-based Virtual Machine is a full virtualization solution for Linux on AMD64 and Intel 64 systems. The qemu-kvm packages provide the user-space component for running virtual machines using KVM. Security Fix: An out-of-bounds read-access flaw was found in the QEMU emulator built with IP checksum routines. The flaw could occur when computing a TCP/UDP packet's checksum, because a QEMU function used the packet's payload length without checking against the data buffer's size. A user inside a guest could use this flaw to crash the QEMU process.

tags | advisory, kernel, udp, tcp
systems | linux, redhat
advisories | CVE-2016-2857
MD5 | d1a919a428bdfe7e98f8acfb538b52ca
Red Hat Security Advisory 2017-0025-01
Posted Jan 6, 2017
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2017-0025-01 - puppet-tripleo is a key component of the Red Hat OpenStack Platform director, which is a toolset for installing and managing a complete OpenStack environment. Security Fix: An access-control flaw was discovered in puppet-tripleo's IPtables rules management, which allowed the creation of TCP/UDP rules with empty port values. Some API services in Red Hat OpenStack Platform director are not exposed to public networks, which meant their $public_ssl_port value was set to empty. If SSL was enabled, a malicious user could use these open ports to gain access to unauthorized resources.

tags | advisory, udp, tcp
systems | linux, redhat
advisories | CVE-2016-9599
MD5 | 70f55ae533a448180bff20d6e7a63fe6
Bettercap 1.6.0
Posted Dec 29, 2016
Authored by evilsocket | Site bettercap.org

BetterCAP is a powerful, flexible, and portable tool created to perform various types of MITM attacks against a network, manipulate HTTP, HTTPS and TCP traffic in realtime, sniff for credentials and much more.

Changes: Generated a new CA pem file with less descriptive fields, trying to clone GoDaddy CA as much as possible. New -R rainbow option! Updated mac vendors lookup file with latest version. Various other updates and improvements.
tags | tool, web, sniffer, tcp
systems | unix
MD5 | dd099a921c8955a15ce04804189bc77c
OpenSSH Local Privilege Escalation
Posted Dec 23, 2016
Authored by Jann Horn, Google Security Research

OpenSSH can forward TCP sockets and UNIX domain sockets. If privilege separation is disabled, then on the server side, the forwarding is handled by a child of sshd that has root privileges. For TCP server sockets, sshd explicitly checks whether an attempt is made to bind to a low port (below IPPORT_RESERVED) and, if so, requires the client to authenticate as root. However, for UNIX domain sockets, no such security measures are implemented. This means that, using "ssh -L", an attacker who is permitted to log in as a normal user over SSH can effectively connect to non-abstract unix domain sockets with root privileges. On systems that run systemd, this can for example be exploited by asking systemd to add an LD_PRELOAD environment variable for all following daemon launches and then asking it to restart cron or so. The attached exploit demonstrates this - if it is executed on a system with systemd where the user is allowed to ssh to his own account and where privsep is disabled, it yields a root shell.

tags | exploit, shell, root, tcp
systems | unix
advisories | CVE-2016-10010
MD5 | b93e78906a304aa126934a6c44a6999b
Nmap Port Scanner 7.40
Posted Dec 21, 2016
Authored by Fyodor | Site insecure.org

Nmap is a utility for port scanning large networks, although it works fine for single hosts. Sometimes you need speed, other times you may need stealth. In some cases, bypassing firewalls may be required. Not to mention the fact that you may want to scan different protocols (UDP, TCP, ICMP, etc.). Nmap supports Vanilla TCP connect() scanning, TCP SYN (half open) scanning, TCP FIN, Xmas, or NULL (stealth) scanning, TCP ftp proxy (bounce attack) scanning, SYN/FIN scanning using IP fragments (bypasses some packet filters), TCP ACK and Window scanning, UDP raw ICMP port unreachable scanning, ICMP scanning (ping-sweep), TCP Ping scanning, Direct (non portmapper) RPC scanning, Remote OS Identification by TCP/IP Fingerprinting, and Reverse-ident scanning. Nmap also supports a number of performance and reliability features such as dynamic delay time calculations, packet timeout and retransmission, parallel port scanning, detection of down hosts via parallel pings.

Changes: Updated the bundled Npcap from 0.10r9 to 0.78r5. Integrated 568 IPv4 OS fingerprint submissions. Integrated 779 service/version fingerprints. Various other updates and features.
tags | tool, remote, udp, tcp, protocol, nmap
systems | unix
MD5 | 1c300c247558e9cf7612e585cf2edfa0
Bettercap 1.5.9
Posted Dec 15, 2016
Authored by evilsocket | Site bettercap.org

BetterCAP is a powerful, flexible, and portable tool created to perform various types of MITM attacks against a network, manipulate HTTP, HTTPS and TCP traffic in realtime, sniff for credentials and much more.

Changes: New --no-http-logs proxy option. New Response#redirect! helper method. Various other features and bug fixes.
tags | tool, web, sniffer, tcp
systems | unix
MD5 | 45dc1892b89449cb25a45c72f3a98d06
Pozzo And Lucky, The Phantom Shell. Stego In TCP/IP Part 2
Posted Dec 12, 2016
Authored by John Torakis

Whitepaper called Pozzo and Lucky, The phantom Shell. Stego in TCP/IP Part 2.

tags | paper, shell, tcp
MD5 | a6c9bb01e06dadec12c647c00cd97767
Windows x64 Bind Shell TCP Shellcode
Posted Dec 8, 2016
Authored by Roziul Hasan Khan Shifat

508 bytes small Windows x64 bind shell TCP shellcode.

tags | shell, tcp, shellcode
systems | windows
MD5 | 88daf8d528993fc1e0347b49202b3b2a
Teaching An Old Dog (Not That New) Tricks - Stego In TCP/IP Made Easy Part 1
Posted Dec 8, 2016
Authored by John Torakis

Whitepaper called Teaching an Old Dog (not that new) Tricks - Stego in TCP/IP made easy (part-1).

tags | paper, tcp
MD5 | 960ed71aa5f4b8c8ae9fbfcff0bbc475
Kernel Live Patch Security Notice LSN-0014-1
Posted Dec 8, 2016
Authored by Luis Henriques

Philip Pettersson discovered a race condition in the af_packet implementation in the Linux kernel. A local unprivileged attacker could use this to cause a denial of service (system crash) or run arbitrary code with administrative privileges. Pengfei Wang discovered a race condition in the Adaptec AAC RAID controller driver in the Linux kernel when handling ioctl()s. A local attacker could use this to cause a denial of service (system crash). Marco Grassi discovered a use-after-free condition could occur in the TCP retransmit queue handling code in the Linux kernel. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code.

tags | advisory, denial of service, arbitrary, kernel, local, tcp
systems | linux
advisories | CVE-2016-6480, CVE-2016-6828, CVE-2016-8655
MD5 | c654f261f98e8fb00d15ffa5185aa4a4
Red Hat JBoss EAP 5.2.x Untrusted Data Deserialization
Posted Nov 24, 2016
Authored by Maurizio Agazzini, Federico Dotta

JBoss EAP's JMX Invoker Servlet is exposed by default on port 8080/TCP. The communication employs serialized Java objects, encapsulated in HTTP requests and responses. The server deserializes these objects without checking the object type. This behavior can be exploited to cause a denial of service and potentially execute arbitrary code.

tags | exploit, java, web, denial of service, arbitrary, tcp
advisories | CVE-2016-7065
MD5 | eaea199662dd8fa71b42b12d170d351d
Dlink DIR Routers Unauthenticated HNAP Login Stack Buffer Overflow
Posted Nov 21, 2016
Authored by Pedro Ribeiro | Site metasploit.com

Several Dlink routers contain a pre-authentication stack buffer overflow vulnerability, which is exposed on the LAN interface on port 80. This vulnerability affects the HNAP SOAP protocol, which accepts arbitrarily long strings into certain XML parameters and then copies them into the stack. This exploit has been tested on the real devices DIR-818LW and 868L (rev. B), and it was tested using emulation on the DIR-822, 823, 880, 885, 890 and 895. Others might be affected, and this vulnerability is present in both MIPS and ARM devices. The MIPS devices are powered by Lextra RLX processors, which are crippled MIPS cores lacking a few load and store instructions. Because of this the payloads have to be sent unencoded, which can cause them to fail, although the bind shell seems to work well. For the ARM devices, the inline reverse tcp seems to work best. Check the reference links to see the vulnerable firmware versions.

tags | exploit, overflow, shell, tcp, protocol
advisories | CVE-2016-6563
MD5 | dd3ba90a3c8d9aee1a73c5d68572d159
Linux Kernel TCP Related Read Use-After-Free
Posted Nov 9, 2016
Authored by Marco Grassi

The tcp_check_send_head function in include/net/tcp.h in the Linux kernel before 4.7.5 does not properly maintain certain SACK state after a failed data copy, which allows local users to cause a denial of service (tcp_xmit_retransmit_queue use-after-free and system crash) via a crafted SACK option.

tags | exploit, kernel, tcp
systems | linux
advisories | CVE-2016-6828
MD5 | 01fc228e1ee6c5dde13e4bc2c41a84af
Red Hat Security Advisory 2016-2590-02
Posted Nov 4, 2016
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2016-2590-02 - The Dynamic Host Configuration Protocol is a protocol that allows individual devices on an IP network to get their own network configuration information, including an IP address, a subnet mask, and a broadcast address. The dhcp packages provide a relay agent and ISC DHCP service required to enable and administer DHCP on a network. Security Fix: A resource-consumption flaw was discovered in the DHCP server. dhcpd did not restrict the number of open connections to OMAPI and failover ports. A remote attacker able to establish TCP connections to one of these ports could use this flaw to cause dhcpd to exit unexpectedly, stop responding requests, or exhaust system sockets.

tags | advisory, remote, tcp, protocol
systems | linux, redhat
advisories | CVE-2016-2774
MD5 | fdc54986e8a172eb32b9e90f1ea0be12
Samhain File Integrity Checker 4.2.0
Posted Nov 1, 2016
Authored by Rainer Wichmann | Site samhain.sourceforge.net

Samhain is a file system integrity checker that can be used as a client/server application for centralized monitoring of networked hosts. Databases and configuration files can be stored on the server. Databases, logs, and config files can be signed for tamper resistance. In addition to forwarding reports to the log server via authenticated TCP/IP connections, several other logging facilities (e-mail, console, and syslog) are available. Tested on Linux, AIX, HP-UX, Unixware, Sun and Solaris.

Changes: Various updates.
tags | tool, tcp, intrusion detection
systems | linux, unix, solaris, aix, hpux, unixware
MD5 | 39f476e7ac4f97fc9e5b0b1da79e121c
Nmap Port Scanner 7.30
Posted Oct 21, 2016
Authored by Fyodor | Site insecure.org

Nmap is a utility for port scanning large networks, although it works fine for single hosts. Sometimes you need speed, other times you may need stealth. In some cases, bypassing firewalls may be required. Not to mention the fact that you may want to scan different protocols (UDP, TCP, ICMP, etc.). Nmap supports Vanilla TCP connect() scanning, TCP SYN (half open) scanning, TCP FIN, Xmas, or NULL (stealth) scanning, TCP ftp proxy (bounce attack) scanning, SYN/FIN scanning using IP fragments (bypasses some packet filters), TCP ACK and Window scanning, UDP raw ICMP port unreachable scanning, ICMP scanning (ping-sweep), TCP Ping scanning, Direct (non portmapper) RPC scanning, Remote OS Identification by TCP/IP Fingerprinting, and Reverse-ident scanning. Nmap also supports a number of performance and reliability features such as dynamic delay time calculations, packet timeout and retransmission, parallel port scanning, detection of down hosts via parallel pings.

Changes: New service probe and match line for iperf3. Added Drupal to the set of web apps brute forced by http-form-brute. Various other updates and fixes.
tags | tool, remote, udp, tcp, protocol, nmap
systems | unix
MD5 | cba828e3c2cc59d9437f3d786a44a4af
Ubuntu Security Notice USN-3097-2
Posted Oct 14, 2016
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3097-2 - Marco Grassi discovered a use-after-free condition could occur in the TCP retransmit queue handling code in the Linux kernel. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. Pengfei Wang discovered a race condition in the audit subsystem in the Linux kernel. A local attacker could use this to corrupt audit logs or disrupt system-call auditing. Various other issues were also addressed.

tags | advisory, denial of service, arbitrary, kernel, local, tcp
systems | linux, ubuntu
advisories | CVE-2016-6136, CVE-2016-6480, CVE-2016-6828
MD5 | 5bfc16d8b3a737ef00ff4133ad234e42
Bettercap 1.5.8
Posted Oct 13, 2016
Authored by evilsocket | Site bettercap.org

BetterCAP is a powerful, flexible, and portable tool created to perform various types of MITM attacks against a network, manipulate HTTP, HTTPS and TCP traffic in realtime, sniff for credentials and much more.

Changes: New --log-http-response, --html-file, and --full-duplex options. Various fixes.
tags | tool, web, sniffer, tcp
systems | unix
MD5 | 36da34d5adcfb224dff49bee99847691
Ubuntu Security Notice USN-3099-3
Posted Oct 12, 2016
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3099-3 - It was discovered that an unbounded recursion in the VLAN and TEB Generic Receive Offload processing implementations in the Linux kernel, A remote attacker could use this to cause a stack corruption, leading to a denial of service. Marco Grassi discovered a use-after-free condition could occur in the TCP retransmit queue handling code in the Linux kernel. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. Various other issues were also addressed.

tags | advisory, remote, denial of service, arbitrary, kernel, local, tcp
systems | linux, ubuntu
advisories | CVE-2016-6480, CVE-2016-6828, CVE-2016-7039
MD5 | 0dba9e104afbb1a7d310cf8642437ede
Ubuntu Security Notice USN-3099-4
Posted Oct 12, 2016
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3099-4 - It was discovered that an unbounded recursion in the VLAN and TEB Generic Receive Offload processing implementations in the Linux kernel, A remote attacker could use this to cause a stack corruption, leading to a denial of service. Marco Grassi discovered a use-after-free condition could occur in the TCP retransmit queue handling code in the Linux kernel. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. Various other issues were also addressed.

tags | advisory, remote, denial of service, arbitrary, kernel, local, tcp
systems | linux, ubuntu
advisories | CVE-2016-6480, CVE-2016-6828, CVE-2016-7039
MD5 | 059295b45e6db97ee1690400709c173d
Ubuntu Security Notice USN-3097-1
Posted Oct 12, 2016
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3097-1 - Marco Grassi discovered a use-after-free condition could occur in the TCP retransmit queue handling code in the Linux kernel. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. Pengfei Wang discovered a race condition in the audit subsystem in the Linux kernel. A local attacker could use this to corrupt audit logs or disrupt system-call auditing. Various other issues were also addressed.

tags | advisory, denial of service, arbitrary, kernel, local, tcp
systems | linux, ubuntu
advisories | CVE-2016-6136, CVE-2016-6480, CVE-2016-6828
MD5 | 705aae2a7f026da93b84be90ba5fc103
Ubuntu Security Notice USN-3098-1
Posted Oct 12, 2016
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3098-1 - It was discovered that an unbounded recursion in the VLAN and TEB Generic Receive Offload processing implementations in the Linux kernel, A remote attacker could use this to cause a stack corruption, leading to a denial of service. Marco Grassi discovered a use-after-free condition could occur in the TCP retransmit queue handling code in the Linux kernel. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. Various other issues were also addressed.

tags | advisory, remote, denial of service, arbitrary, kernel, local, tcp
systems | linux, ubuntu
advisories | CVE-2016-6136, CVE-2016-6480, CVE-2016-6828, CVE-2016-7039
MD5 | f6a6065596ed373a81c7246483b609d2
Ubuntu Security Notice USN-3099-1
Posted Oct 12, 2016
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3099-1 - It was discovered that an unbounded recursion in the VLAN and TEB Generic Receive Offload processing implementations in the Linux kernel, A remote attacker could use this to cause a stack corruption, leading to a denial of service. Marco Grassi discovered a use-after-free condition could occur in the TCP retransmit queue handling code in the Linux kernel. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. Various other issues were also addressed.

tags | advisory, remote, denial of service, arbitrary, kernel, local, tcp
systems | linux, ubuntu
advisories | CVE-2016-6130, CVE-2016-6480, CVE-2016-6828, CVE-2016-7039
MD5 | 8c1bb6d933865d7036eccc1367667395
Nmap Port Scanner 7.30
Posted Oct 2, 2016
Authored by Fyodor | Site insecure.org

Nmap is a utility for port scanning large networks, although it works fine for single hosts. Sometimes you need speed, other times you may need stealth. In some cases, bypassing firewalls may be required. Not to mention the fact that you may want to scan different protocols (UDP, TCP, ICMP, etc.). Nmap supports Vanilla TCP connect() scanning, TCP SYN (half open) scanning, TCP FIN, Xmas, or NULL (stealth) scanning, TCP ftp proxy (bounce attack) scanning, SYN/FIN scanning using IP fragments (bypasses some packet filters), TCP ACK and Window scanning, UDP raw ICMP port unreachable scanning, ICMP scanning (ping-sweep), TCP Ping scanning, Direct (non portmapper) RPC scanning, Remote OS Identification by TCP/IP Fingerprinting, and Reverse-ident scanning. Nmap also supports a number of performance and reliability features such as dynamic delay time calculations, packet timeout and retransmission, parallel port scanning, detection of down hosts via parallel pings.

Changes: Integrated 12 IPv6 OS fingerprint submissions from June to September. Added 7 NSE scripts, from 3 authors, bringing the total up to 541. New service probes and match lines for DTLS, IPMI-RMCP, MQTT, PCWorx, ProConOS, and Tridium Fox. Various updates and fixes.
tags | tool, remote, udp, tcp, protocol, nmap
systems | unix
MD5 | a46631700c796be1ce24c261c36f46a7
Cisco Security Advisory 20160928-smi
Posted Sep 29, 2016
Authored by Cisco Systems | Site cisco.com

Cisco Security Advisory - The Smart Install client feature in Cisco IOS and IOS XE Software contains a vulnerability that could allow an unauthenticated, remote attacker to cause a memory leak and eventual denial of service (DoS) condition on an affected device. The vulnerability is due to incorrect handling of image list parameters. An attacker could exploit this vulnerability by sending crafted Smart Install packets to TCP port 4786. A successful exploit could cause a Cisco Catalyst switch to leak memory and eventually reload, resulting in a DoS condition. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability other than disabling Smart Install functionality on the affected device.

tags | advisory, remote, denial of service, tcp, memory leak
systems | cisco, osx
MD5 | f4a1186c6866c8953658abc16723759c
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