CVE-2022-4129

A flaw was found in the Linux kernel's Layer 2 Tunneling Protocol L2TP. A missing lock when clearing skuserdata can lead to a race condition and NULL pointer dereference. A local user could use this flaw to potentially crash the system causing a denial of service...

CVE-2022-4129

A flaw was found in the Linux kernel's Layer 2 Tunneling Protocol L2TP. A missing lock when clearing skuserdata can lead to a race condition and NULL pointer dereference. A local user could use this flaw to potentially crash the system causing a denial of service...

CVE-2022-4129

A flaw was found in the Linux kernel's Layer 2 Tunneling Protocol L2TP. A missing lock when clearing skuserdata can lead to a race condition and NULL pointer dereference. A local user could use this flaw to potentially crash the system causing a denial of service...

Cisco ATA 190 Series Analog Telephone Adapter Software Vulnerabilities

Multiple vulnerabilities in the Cisco Discovery Protocol and Link Layer Discovery Protocol LLDP for Cisco ATA 190 Series Analog Telephone Adapter Software could allow an attacker to execute code, cause the service to reload unexpectedly, or cause Cisco Discovery Protocol or LLDP database corrupti...

CVE-2021-27862

Layer 2 network filtering capabilities such as IPv6 RA guard can be bypassed using LLC/SNAP headers with invalid length and Ethernet to Wifi frame conversion and optionally VLAN0 headers...

CVE-2021-27861

Layer 2 network filtering capabilities such as IPv6 RA guard can be bypassed using LLC/SNAP headers with invalid length and optionally VLAN0 headers...

Code injection

Layer 2 network filtering capabilities such as IPv6 RA guard can be bypassed using LLC/SNAP headers with invalid length and optionally VLAN0 headers...

CVE-2021-27862

CVE-2021-27862 is a Layer 2 network filtering bypass vulnerability where IPv6 RA/RA guard-like filtering can be bypassed via LLC/SNAP headers with invalid length and Ethernet-to-WiFi frame translation (and optionally VLAN0 headers). Public documents confirm exposure across vendor devices (e.g., C...

CVE-2021-27853 L2 network filtering can be bypassed using stacked VLAN0 and LLC/SNAP headers

Layer 2 network filtering capabilities such as IPv6 RA guard or ARP inspection can be bypassed using combinations of VLAN 0 headers and LLC/SNAP headers...

Vulnerabilities in Layer 2 Network Security Controls Affecting Cisco Products: September 2022

On September 27, 2022, the following vulnerabilities affecting Cisco products were disclosed by Cert/CC as part of VU855201, titled L2 network security controls can be bypassed using VLAN 0 stacking and/or 802.3 headers "https://kb.cert.org/vuls/id/855201": CVE-2021-27853: Layer 2 network filteri...

CVE-2021-27862: Improper Handling of Length Parameter Inconsistency

Layer 2 network filtering capabilities such as IPv6 RA guard can be bypassed using LLC/SNAP headers with invalid length and Ethernet to Wifi frame conversion and optionally VLAN0 headers...

PT-2022-9877 · Cisco · Cisco Ios +2

Name of the Vulnerable Software and Affected Versions: No specific software or versions are mentioned in the provided descriptions. Description: The issue allows Layer 2 network filtering capabilities, such as IPv6 RA guard, to be bypassed. This can be achieved by using LLC/SNAP headers with...

多款Cisco产品安全漏洞

Cisco IOS and others are products of Cisco Corporation.Cisco IOS is a set of operating systems developed for its network devices.Cisco IOS XE Software is an operating system.Cisco Small Business is a switch.Cisco IOS XE Software is an operating system.Cisco Small Business is a switch. Cisco IOS...

Cisco IOS XR Software Cisco Discovery Protocol Denial of Service Vulnerability

A vulnerability in the Cisco Discovery Protocol implementation for Cisco IOS XR Software could allow an unauthenticated, adjacent attacker to cause the Cisco Discovery Protocol process to reload on an affected device. This vulnerability is due to a heap buffer overflow in certain Cisco Discovery...

PT-2022-5096 · Cisco · Cisco Ios Xr

Name of the Vulnerable Software and Affected Versions: Cisco IOS XR Software affected versions not specified Description: A vulnerability in the Cisco Discovery Protocol implementation could allow an unauthenticated, adjacent attacker to cause the Cisco Discovery Protocol process to reload on an...

CVE-2022-30211 Windows Layer 2 Tunneling Protocol (L2TP) Remote Code Execution Vulnerability

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CVE-2022-30211: Undefined Security Weakness

Windows Layer 2 Tunneling Protocol L2TP Remote Code Execution Vulnerability...

KLA12581 Multiple vulnerabilities in Microsoft Products (ESU)

Multiple vulnerabilities were found in Microsoft Products Extended Security Update. Malicious users can exploit these vulnerabilities to gain privileges, bypass security restrictions, obtain sensitive information, execute arbitrary code, cause denial of service. Below is a complete list of...

Griefing Attack By Extending The Reward Duration

Lines of code Vulnerability details Proof-Of-Concept The Gauge.notifyRewardAmount notifies the contract of a newly received rewards. This updates the local accounting and streams the reward over a preset period Five days. It was observed that this function is callable by anyone regardless of...

Siemens SIMATIC, SINUMERIK, and PROFINET IO Improper Input Validation (CVE-2018-4843)

A vulnerability has been identified in SIMATIC CP 343-1 incl. SIPLUS variants All versions, SIMATIC CP 343-1 Advanced incl. SIPLUS variants All versions, SIMATIC CP 443-1 All versions V3.3, SIMATIC CP 443-1 All versions V3.3, SIMATIC CP 443-1 Advanced All versions V3.3, SIMATIC ET 200pro IM154-8...