CVE-2021-27861 L2 network filtering bypass using stacked VLAN0 and LLC/SNAP headers with invalid lengths

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-2021-27861

CVE-2021-27861 is a Layer 2 security bypass where IPv6 RA guard/other L2 filters can be bypassed by LLC/SNAP headers with invalid length, optionally combined with VLAN0 headers. The Arista advisory (CVE-2021-27861) specifies affected Arista EOS platforms and Wi‑Fi APs, describing two variants: VL...

CVE-2021-27853

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...

多款Cisco产品安全漏洞

Cisco IOS and others are products of Cisco USA.Cisco IOS is a set of operating systems developed for its network devices.Cisco IOS XR is a set of operating systems developed for its network devices.Cisco IOS XE Software is an operating system.Cisco IOS XE Software is an operating system.Cisco IOS...

PT-2022-9876 · Ieee +1 · 802.2 +3

Name of the Vulnerable Software and Affected Versions: No specific software or versions are mentioned. Description: The issue allows Layer 2 network filtering capabilities, such as IPv6 RA guard, to be bypassed. This can be achieved by using specific combinations of VLAN 0 headers, LLC/SNAP...

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 NX-OS Software and others are products of Cisco Corporation.Cisco NX-OS Software is a set of data center-grade operating system software used by switches.Cisco IOS is an operating system developed for its network devices.Cisco IOS XE Software is an operating system.Cisco IOS XE Software is...

多款Cisco产品安全漏洞

Cisco NX-OS Software and others are products of Cisco Corporation.Cisco NX-OS Software is a set of data center-grade operating system software used by switches.Cisco IOS is an operating system developed for its network devices.Cisco IOS XE Software is an operating system.Cisco IOS XE Software is...

PT-2022-9878 · Ieee +1 · 802.2 +3

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 utilizing LLC/SNAP headers with...

L2 network security controls can be bypassed using VLAN 0 stacking and/or 802.3 headers

Overview Layer-2 L2 network security controls provided by various devices, such as switches, routers, and operating systems, can be bypassed by stacking Ethernet protocol headers. An attacker can send crafted packets through vulnerable devices to cause Denial-of-service DoS or to perform a...

PT-2022-6973 · D Link · D-Link Dap-1325

Name of the Vulnerable Software and Affected Versions: D-Link DAP-1325 affected versions not specified Description: The issue is related to the SetHostIPv6Settings function of the D-Link DAP-1325 wireless signal amplifier's firmware, which does not properly neutralize special elements. This allow...

EulerOS Virtualization 2.9.0 : curl (EulerOS-SA-2022-2377)

According to the versions of the curl packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities : - An improper authentication vulnerability exists in curl 7.33.0 to and including 7.82.0 which might allow reuse OAUTH2-authenticated...

OAuthLib vulnerable to DoS when attacker provides malicious IPV6 URI

Impact - Attacker providing malicious redirect uri can cause DoS to oauthlib's web application. - Attacker can also leverage usage of urivalidate functions depending where it is used. What kind of vulnerability is it? Who is impacted? Oauthlib applications using OAuth2.0 provider support or use...

CVE-2022-38830

Tenda RX9Pro V22.03.02.10 is vulnerable to Buffer Overflow via httpd/setIPv6Status...

Microsoft Windows TCP/IP Remote Code Execution Vulnerability (CNVD-2022-63613)

The Microsoft Windows TCP/IP component is a Microsoft component that provides TCP/IP configuration capabilities for Windows. A security vulnerability exists in Microsoft Windows TCP/IP. No detailed vulnerability details are provided at this time...

Patch Tuesday - September 2022

This month’s Patch Tuesday is on the lighter side, with 79 CVEs being fixed by Microsoft including 16 CVEs affecting Chromium, used by their Edge browser, that were already available. One zero-day was announced: CVE-2022-37969 is an elevation of privilege vulnerability affecting the Log File Syst...

initscripts bug fix and enhancement update

An update is available for initscripts. This update affects Rocky Linux 8. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from the CVE list The initscripts packages contain basic system scripts that boot the syste...

nss and nspr bug fix and enhancement update

An update is available for nspr, nss. This update affects Rocky Linux 8. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from the CVE list Network Security Services NSS is a set of libraries designed to support the...

Vulnerabilities fixed in Microsoft Windows

Microsoft has fixed vulnerabilities in several components of Windows. The vulnerabilities allow a malicious party to perform attacks that result in the following categories of damage: Denial-of-Service DoS Bypassing authentication Bypassing security measure Remote code execution Administrator/Roo...

CVE-2022-36087 OAuthLib vulnerable DoS when attacker provides malicious IPV6 URI

OAuthLib is an implementation of the OAuth request-signing logic for Python 3.6+. In OAuthLib versions 3.1.1 until 3.2.1, an attacker providing malicious redirect uri can cause denial of service. An attacker can also leverage usage of urivalidate functions depending where it is used. OAuthLib...