Microsoft Windows 10 gives unprivileged user access to system32\config files

Overview Multiple versions of Windows 10 grant non-administrative users read access to files in the %windir%\system32\config directory. This can allow for local privilege escalation LPE. Description With multiple versions of Windows 10, the BUILTIN\Users group is given RX permissions to files in...

Cisco IOS XE Arbitrary Code Execution Vulnerability (CNVD-2021-22189)

Cisco IOS XE is a set of modular operating system based on Linux kernel developed by Cisco for its network equipment. An arbitrary code execution vulnerability exists in the Simple Virtual Switching System VSS feature of Cisco IOS XE. The vulnerability stems from incorrect boundary checking of...

CVE-2021-1451

A vulnerability in the Easy Virtual Switching System VSS feature of Cisco IOS XE Software for Cisco Catalyst 4500 Series Switches and Cisco Catalyst 4500-X Series Switches could allow an unauthenticated, remote attacker to execute arbitrary code on the underlying Linux operating system of an...

CVE-2021-1451

A vulnerability in the Easy Virtual Switching System VSS feature of Cisco IOS XE Software for Cisco Catalyst 4500 Series Switches and Cisco Catalyst 4500-X Series Switches could allow an unauthenticated, remote attacker to execute arbitrary code on the underlying Linux operating system of an...

CVE-2021-1451 Cisco IOS XE Software Easy Virtual Switching System Arbitrary Code Execution Vulnerability

A vulnerability in the Easy Virtual Switching System VSS feature of Cisco IOS XE Software for Cisco Catalyst 4500 Series Switches and Cisco Catalyst 4500-X Series Switches could allow an unauthenticated, remote attacker to execute arbitrary code on the underlying Linux operating system of an...

CVE-2021-1451

The CVE-2021-1451 issue affects Cisco IOS XE Software Easy Virtual Switching System (VSS) on Cisco Catalyst 4500/4500-X switches. The root cause is improper boundary checks in Easy VSS protocol packets, allowing an unauthenticated, remote attacker to send crafted packets to UDP port 5500 while th...

Cisco IOS XE Software 缓冲区错误漏洞

Cisco IOS XE is a set of modular operating system based on Linux kernel developed by Cisco for its network equipment. An arbitrary code execution vulnerability exists in the Simple Virtual Switching System VSS feature of Cisco IOS XE. The vulnerability stems from incorrect boundary checking of...

hyperv-daemons bug fix and enhancement update

The hyperv-daemons packages provide a suite of daemons that are needed when a AlmaLinux guest is running on Microsoft Hyper-V. The following daemons are included: - hypervkvpd, the guest Hyper-V Key-Value Pair KVP daemon - hypervvssd, the implementation of Hyper-V VSS functionality - hypervfcopyd...

Veeam Support For Azure FIles

This article provides information around Veeam Backup & Replication support for Microsoft Azure Files. Note that it is possible to protect Azure Files natively with Azure Files Policies in Veeam Plug-In for Microsoft Azure. This article specifically discusses using Veeam Backup & Replication in...

How to keep OST files in Veeam Agent backup

Challenge When you create a backup using Veeam Agent for Microsoft Windows , Microsoft Volume Shadow Copy Service VSS excludes certain files like deleted, temporary, paging or OST files from the backup scope. Cause Veeam Agent for Microsoft Windows uses Microsoft VSS for backup operations...

How to Use VSSTrace to Collect VSS Diagnostic Logging

Challenge This article explains how to collect additional VSS diagnostic data with the VSSTrace tool, a Microsoft Windows Software Development Kit SDK component. Cause Veeam products use Microsoft Volume Shadow Copy Service VSS for various tasks. Sometimes it is necessary to go through the...

How to Test the Creation of Production Checkpoints in Hyper-V 2016 and Newer

Purpose This article documents how to force Hyper-V 2016 or newer to create a Production Checkpoint. Cause Forcing Hyper-V to create a Checkpoint in ProductionOnly mode is used as an isolation step when troubleshooting a Veeam job that fails to create a Recovery Checkpoint with Application-Aware...

Job fails to create VSS snapshot for SMB share

Challenge A File Backup/file to tape job skips VSS snapshot creation on SMB share and ends with the following message in the log: Failed to create a VSS snapshot, failing over to direct backup from the file share A File Backup job for an SMB3 File Share configured to use Backup from a Microsoft V...

PT-2019-18462 · Qnap · Qnap Netbak Replicator

Name of the Vulnerable Software and Affected Versions: QNAP NetBak Replicator versions prior to 4.5.12.1108 Description: An unquoted service path issue affects the QVssService in QNAP NetBak Replicator, allowing an authorized but non-privileged local user to execute arbitrary code with elevated...

USB Device is Not Backed Up by Veeam Agent for Microsoft Windows

Challenge A USB storage device attached to a Windows machine is not backed up by Veeam Agent for Microsoft Windows despite the "Include external USB drives" option being selected. Cause Due to limitations within the Microsoft VSS functionality, creating a shadow copy of a removable device, such a...

Cisco IOS XE Software Catalyst 4500 Cisco Discovery Protocol Denial of Service Vulnerability

According to its self-reported version, Cisco IOS XE Software is affected by following vulnerability - A vulnerability in the Easy Virtual Switching System VSS of Cisco IOS XE Software on Catalyst 4500 Series Switches could allow an unauthenticated, adjacent attacker to cause the switches to...

CVE-2019-1750

A vulnerability in the Easy Virtual Switching System VSS of Cisco IOS XE Software on Catalyst 4500 Series Switches could allow an unauthenticated, adjacent attacker to cause the switches to reload. The vulnerability is due to incomplete error handling when processing Cisco Discovery Protocol CDP...

CVE-2019-1750

Cisco IOS XE Software on Catalyst 4500 Series Switches is vulnerable in the Easy Virtual Switching System (VSS) to denial of service via unauthenticated, adjacent CDP packets. The root cause is incomplete error handling when processing CDP in VSS. An attacker can send a crafted CDP packet to caus...

SQL VSS writer fails for SQL localdb on Azure AD Connect Sync server.

Challenge Backup or replication jobs with Application Aware Image-Processing enabled may fail on the server hosting Azure AD Connect Sync with an error indicating the SQL writer has failed. After the job has failed, running "Vssadmin list writers" from an administrative command prompt on the Azur...

How to Collect Logs for Veeam Plug-in for SAP HANA

Purpose This article documents how to collect the diagnostic information needed for a support case involving the Veeam Plug-in for SAP HANA. Solution 1. Collect diagnostic information as documented in the four sections below. 2. Combine the data into a single .zip file. 3. Attach the zip file to...