Heap Overflow Vulnerability in Citrix NetScaler Gateway (CVE-2017-7219)

After presenting my findings on the Swisscom router at the CybSecConference last year, I started looking for a new product to analyze. I quickly found that it’s possible to download virtual “demo” appliances of Citrix products, so I went on to download a Netscaler VPX, which at the time was at...

Oracle Linux 6 : glibc (ELSA-2017-0680)

The remote Oracle Linux 6 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2017-0680 advisory. - Fix CVE-2015-8779 glibc: Unbounded stack allocation in catopen function 1358015. - Fix CVE-2015-8778 glibc: Integer overflow in hcreate and hcreater...

Internet Bug Bounty: OCSP Status Request extension unbounded memory growth (CVE-2016-6304)

A malicious client can send an excessively large OCSP Status Request extension. If that client continually requests renegotiation, sending a large OCSP Status Request extension each time, then there will be unbounded memory growth on the server. This will eventually lead to a Denial Of Service...

Ubuntu: Security Advisory (USN-3239-2)

The remote host is missing an update for the SPDX-FileCopyrightText: 2017 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only ifdescription...

glibc: Unbounded stack allocation in nan* functions

A stack overflow vulnerability was found in nan functions that could cause applications, which process long strings with the nan function, to crash or, potentially, execute arbitrary code...

kernel: Remotely triggerable recursion in GRE code leading to kernel crash

A flaw was found in the way the Linux kernel's networking subsystem handled offloaded packets with multiple layers of encapsulation in the GRO Generic Receive Offload code path. A remote attacker could use this flaw to trigger unbounded recursion in the kernel that could lead to stack corruption,...

CVE-2016-9367

An issue was discovered in Moxa NPort 5110 versions prior to 2.6, NPort 5130/5150 Series versions prior to 3.6, NPort 5200 Series versions prior to 2.8, NPort 5400 Series versions prior to 3.11, NPort 5600 Series versions prior to 3.7, NPort 5100A Series & NPort P5150A versions prior to 1.3, NPor...

ALPINE-CVE-2017-5495

All versions of Quagga, 0.93 through 1.1.0, are vulnerable to an unbounded memory allocation in the telnet 'vty' CLI, leading to a Denial-of-Service of Quagga daemons, or even the entire host. When Quagga daemons are configured with their telnet CLI enabled, anyone who can connect to the TCP port...

CVE-2017-5495

All versions of Quagga, 0.93 through 1.1.0, are vulnerable to an unbounded memory allocation in the telnet 'vty' CLI, leading to a Denial-of-Service of Quagga daemons, or even the entire host. When Quagga daemons are configured with their telnet CLI enabled, anyone who can connect to the TCP port...

UBUNTU-CVE-2017-5495

All versions of Quagga, 0.93 through 1.1.0, are vulnerable to an unbounded memory allocation in the telnet 'vty' CLI, leading to a Denial-of-Service of Quagga daemons, or even the entire host. When Quagga daemons are configured with their telnet CLI enabled, anyone who can connect to the TCP port...

PYSEC-2017-93

A HTTP/2 implementation built using any version of the Python priority library prior to version 1.2.0 could be targeted by a malicious peer by having that peer assign priority information for every possible HTTP/2 stream ID. The priority tree would happily continue to store the priority informati...

DEBIAN-CVE-2016-7421

The pvscsiringpopreqdescr function in hw/scsi/vmwpvscsi.c in QEMU aka Quick Emulator allows local guest OS administrators to cause a denial of service infinite loop and QEMU process crash by leveraging failure to limit process IO loop to the ring size...

RHEL 6 : openssl (RHSA-2016:2802)

The remote Redhat Enterprise Linux 6 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2016:2802 advisory. - openssl: OCSP Status Request extension unbounded memory growth CVE-2016-6304 Note that Nessus has not tested for this issue but has instead relied...

UBUNTU-CVE-2016-8576

The xhciringfetch function in hw/usb/hcd-xhci.c in QEMU aka Quick Emulator allows local guest OS administrators to cause a denial of service infinite loop and QEMU process crash by leveraging failure to limit the number of link Transfer Request Blocks TRB to process...

dhcp: unclosed TCP connections to OMAPI or failover ports can cause DoS

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...

kernel: Remotely triggerable recursion in GRE code leading to kernel crash

A flaw was found in the way the Linux kernel's networking subsystem handled offloaded packets with multiple layers of encapsulation in the GRO Generic Receive Offload code path. A remote attacker could use this flaw to trigger unbounded recursion in the kernel that could lead to stack corruption,...

kernel: remotely triggerable unbounded recursion in the vlan gro code leading to a kernel crash

Linux kernel built with the 802.1Q/802.1ad VLANCONFIGVLAN8021Q OR Virtual eXtensible Local Area NetworkCONFIGVXLAN with Transparent Ethernet BridgingTEB GRO support, is vulnerable to a stack overflow issue. It could occur while receiving large packets via GRO path, as an unlimited recursion could...

openSUSE Security Update : compat-openssl098 (openSUSE-2016-1189)

This update for compat-openssl098 fixes the following issues : OpenSSL Security Advisory 22 Sep 2016 bsc999665 Severity: High - OCSP Status Request extension unbounded memory growth CVE-2016-6304 bsc999666 Severity: Low - Pointer arithmetic undefined behaviour CVE-2016-2177 bsc982575 - Constant...

CVE-2016-8666

A flaw was found in the way the Linux kernel's networking subsystem handled offloaded packets with multiple layers of encapsulation in the GRO Generic Receive Offload code path. A remote attacker could use this flaw to trigger unbounded recursion in the kernel that could lead to stack corruption,...

USN-3099-4: Linux kernel (Qualcomm Snapdragon) vulnerabilities

Vladimír Beneš discovered an unbounded recursion in the VLAN and TEB Generic Receive Offload GRO processing implementations in the Linux kernel, A remote attacker could use this to cause a stack corruption, leading to a denial of service system crash. CVE-2016-7039 Marco Grassi discovered a...