Designing sockfuzzer, a network syscall fuzzer for XNU

Posted by Ned Williamson, Project Zero Introduction When I started my 20% project – an initiative where employees are allocated twenty-percent of their paid work time to pursue personal projects – with Project Zero, I wanted to see if I could apply the techniques I had learned fuzzing Chrome to...

Buffer overflow

Improper buffer restrictions in network subsystem in provisioned IntelR AMT and IntelR ISM versions before 11.8.79, 11.12.79, 11.22.79, 12.0.68 and 14.0.39 may allow an unauthenticated user to potentially enable escalation of privilege via network access. On un-provisioned systems, an authenticat...

CVE-2020-8758

CVE-2020-8758 affects Intel AMT/ISM: improper buffer restrictions in the network subsystem may allow escalation of privilege. In provisioned systems, an unauthenticated attacker on the network can potentially escalate privileges; on un-provisioned systems, an authenticated user may escalate via l...

Critical Intel Active Management Technology Flaw Allows Privilege Escalation

Intel patched a critical privilege escalation vulnerability in its Active Management Technology AMT, which is used for remote out-of-band management of PCs. AMT is part of the Intel vPro platform Intel’s umbrella marketing term for its collection of computer hardware technologies and is primarily...

kernel: memory leak in register_queue_kobjects() in net/core/net-sysfs.c leads to denial of service

A flaw that allowed an attacker to leak kernel memory was found in the network subsystem where an attacker with permissions to create tun/tap devices can create a denial of service and panic the system...

Huawei EulerOS: Security Advisory for kernel (EulerOS-SA-2019-1525)

The remote host is missing an update for the Huawei EulerOS SPDX-FileCopyrightText: 2020 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...

Huawei EulerOS: Security Advisory for kernel (EulerOS-SA-2019-1484)

The remote host is missing an update for the Huawei EulerOS SPDX-FileCopyrightText: 2020 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...

kernel: memory leak in register_queue_kobjects() in net/core/net-sysfs.c leads to denial of service

A flaw that allowed an attacker to leak kernel memory was found in the network subsystem where an attacker with permissions to create tun/tap devices can create a denial of service and panic the system...

Linux kernel denial of service vulnerability (CNVD-2019-18512)

Linux kernel is the kernel used by Linux, the open source operating system released by the Linux Foundation in the United States. A resource management error vulnerability exists in the way the network subsystem in the Linux kernel handles the TCP Selective Acknowledgment fragment. An attacker...

EulerOS Virtualization for ARM 64 3.0.1.0 : kernel (EulerOS-SA-2019-1522)

According to the versions of the kernel packages installed, the EulerOS Virtualization for ARM 64 installation on the remote host is affected by the following vulnerabilities : - drivers/gpu/msm/kgsl.c in the MSM graphics driver aka GPU driver for the Linux kernel 3.x, as used in Qualcomm...

Denial Of Service (DoS)

kernel is vulnerable to denial of service. A NULL pointer dereference flaw was found in the way the Linux kernel's network subsystem handled socket creation with an invalid protocol identifier. A local user could use this flaw to crash the system...

FreeBSD Information Disclosure Vulnerability (CNVD-2018-09247)

FreeBSD is a set of Unix-like free operating systems in the FreeBSD project, headed by the Core Team team, and is an important branch of Unix-like systems that have evolved through BSD, 386BSD, and 4.4BSD. A security vulnerability exists in FreeBSD versions prior to 11.1-STABLE r332066 and prior ...

CVE-2018-6921

In FreeBSD before 11.1-STABLEr332066 and 11.1-RELEASE-p10, due to insufficient initialization of memory copied to userland in the network subsystem, small amounts of kernel memory may be disclosed to userland processes. Unprivileged authenticated local users may be able to access small amounts of...

Design/Logic Flaw

In FreeBSD before 11.1-STABLEr332066 and 11.1-RELEASE-p10, due to insufficient initialization of memory copied to userland in the network subsystem, small amounts of kernel memory may be disclosed to userland processes. Unprivileged authenticated local users may be able to access small amounts of...

CVE-2018-6921

Removed by vendor...

CVE-2018-6921

In FreeBSD before 11.1-STABLEr332066 and 11.1-RELEASE-p10, due to insufficient initialization of memory copied to userland in the network subsystem, small amounts of kernel memory may be disclosed to userland processes. Unprivileged authenticated local users may be able to access small amounts of...

Linux kernel denial of service vulnerability (CNVD-2018-06471)

The Linux kernel is the kernel used by Linux, an open source operating system released by the Linux Foundation in the U.S. The Hisilicon Network Subsystem HNS is one of these network subsystems. A security vulnerability exists in HNS in versions of Linux kernel prior to 4.12, which stems from the...

CVE-2017-18222

In the Linux kernel, Hisilicon Network Subsystem HNS does not consider the ETHSSPRIVFLAGS case when retrieving ssetcount data. This allows local users to cause a denial of service buffer overflow and memory corruption or possibly have unspecified other impacts...

CVE-2017-18222

In the Linux kernel before 4.12, Hisilicon Network Subsystem HNS does not consider the ETHSSPRIVFLAGS case when retrieving ssetcount data, which allows local users to cause a denial of service buffer overflow and memory corruption or possibly have unspecified other impact, as demonstrated by...

CVE-2017-18222

In the Linux kernel before 4.12, Hisilicon Network Subsystem HNS does not consider the ETHSSPRIVFLAGS case when retrieving ssetcount data, which allows local users to cause a denial of service buffer overflow and memory corruption or possibly have unspecified other impact, as demonstrated by...