CVE-2015-0687

The SNMP implementation in Cisco IOS 15.12SG4 on Catalyst 4500 devices, when single-switch Virtual Switching System VSS is configured, allows remote authenticated users to cause a denial of service device crash by performing SNMP polling, aka Bug ID CSCuq04574...

CVE-2015-0687

Cisco Catalyst 4500 devices running Cisco IOS 15.1(2)SG4 with a single-switch VSS configuration are vulnerable to a SNMP polling DoS (device crash) when an authenticated remote user polls SNMP. Root cause is described as an issue in the SNMP implementation; exact condition is not fully detailed i...

Cisco Catalyst 4500 SNMP Polling Denial of Service Vulnerability

A vulnerability in the Simple Network Management Protocol SNMP code of Cisco Catalyst 4500 devices running Cisco IOS Software could allow an authenticated, remote attacker to cause a denial of service DoS condition. The vulnerability is due to an unspecified condition that exists during SNMP...

Using the Diskshadow Utility to Manually Test VSS Operations

Windows Server Required This article documents how to use Diskshadow , which is only available in Server versions of Windows 2008+. Purpose This article documents how to manually create a volume shadow copy using the Diskshadow command-line utility in Windows. Cause Veeam products use the Microso...

Hyper-V backup or replication job with guest-processing fails after installing Windows Update KB3000853

After installing November roll-up update http://support.microsoft.com/kb/3000853 on 2012 Hyper-V hosts, VSS-enabled backups may be failing in any backup solution. In Veeam you will get "Unable t...

SAN snapshots on HP Store Virtual P4500 left behind after backup failures

Challenge The Veeam backup job fails but the SAN snapshot on HP Store Virtual is still created and left behind. On the proxy you may see in the event logs 2 events, one after another: first VSS event 8229 about VSS writer failure and then event 284 from HP StoreVirtual VSS Provider about successf...

CoinVault Ransomware Betting on Hope with Free File Decrypt

UPDATE: A prior version of this story incorrectly defined VSS as vulnerability scanning systems when in fact it refers to volume shadow copy service, which is a Windows automatic data backup and recovery mechanism. Thanks to commenter Rudy for pointing this out. The courteous CoinVault ransomware...

Application-Aware Image Processing failure with SQL 2012 SP2 case-sensitive collation database

Job using Application-Aware Image Processing fails during VSS processing with: Unfreeze error: Backup job failed. Cannot create a shadow copy of the volumes containing writer's data. A VSS crit...

openSUSE Security Update : samba (openSUSE-SU-2014:0404-1)

"Samba was updated to 4.1.6, fixing bugs and security issues : - Password lockout not enforced for SAMR password changes, this allowed brute forcing of passwords; CVE-2013-4496; bnc849224. - smbcacls can remove a file or directory ACL by mistake; CVE-2013-6442; bnc855866. Also the following bugs...

Cisco IOS XE VSS / BDF Traffic DoS (CSCug41049 / CSCue61890)

The remote Cisco device is affected by a denial of service vulnerability in its packet driver code when handling Virtual Switching Systems VSS or Bidirectional Forwarding Detection BFD traffic. An unauthenticated, adjacent attacker can exploit this to cause a device reload. Note that this issue...

Exchange Logs Not Being Truncated

Challenge This KB provides troubleshooting advice for investigating an apparent Exchange log truncation issue. Cause Exchange truncation may not occur for the following reasons: The Backup Job is not configured to trigger truncation. The VSS operation occurring during the job is not notifying the...

Hardware provider is missing in Veeam Backup and Replication user interface

Challenge Backups using a specific hardware provider do not work, and the provider is missing from the user interface. Cause During a Hyper-V host rescan, available VSS providers are enumerated via a VSS API query. Then, all VSS volumes for which those providers can be used are retrieved. In some...

Cisco IOS Software远程拒绝服务漏洞

Bugtraq ID:66515 CVE ID:CVE-2014-2131 Cisco IOS是多数思科系统路由器和网络交换机上使用的互联网络操作系统。 攻击者可以发送特殊的Virtual Switching Systems VSS或Bidirectional Forwarding Detection BFD报文给受影响设备，可导致拒绝服务攻击。 0 Cisco IOS 目前厂商已经发布了升级补丁以修复漏洞，请下载使用： http://tools.cisco.com/security/center/content/CiscoSecurityNotice/CVE-2014-2131...

Cisco IOS Software High Priority Queue Denial of Service Vulnerability

A vulnerability in the packet driver code of Cisco IOS Software could allow an unauthenticated, remote attacker to cause a reload of the affected device, resulting in a denial of service DoS condition. The vulnerability is due to how the packet driver code handles packets that belong to protocols...

CVE-2014-2131

The packet driver in Cisco IOS allows remote attackers to cause a denial of service device reload via a series of 1 Virtual Switching Systems VSS or 2 Bidirectional Forwarding Detection BFD packets, aka Bug IDs CSCug41049 and CSCue61890...

Code injection

The packet driver in Cisco IOS allows remote attackers to cause a denial of service device reload via a series of 1 Virtual Switching Systems VSS or 2 Bidirectional Forwarding Detection BFD packets, aka Bug IDs CSCug41049 and CSCue61890...

CVE-2014-2131

Summary of the vulnerability (CVE-2014-2131). The Cisco IOS packet driver has a DoS flaw triggered by handling certain VSS/BFD traffic, enabling an unauthenticated, adjacent attacker to cause a device reload. The root cause is in the packet driver code that processes high-priority-queue protocols...

Hyper-V Guest processing skipped (check guest OS VSS state and integration components version)

Challenge Guest VMs will fail to engage VSS when Application-Aware Processing is enabled, generating the error: Error Guest processing skipped check guest OS VSS state and integration components version System.Exception Solution Most Common Solution At the time this article was written in 2014,...

Hyper-V backup job fails to create shadow copy with default shadow storage limit

Challenge Backup or replication of a Hyper-V VM fails. In the Windows event logs on the Hyper-V host server, there is an error with ID 8193 from source VSS: Volume Shadow Copy Service error: Unexpected error calling routine Cannot find anymore diff area candidates for volume...

Hyper-V VSS snapshot import delay

Challenge If you backup your VMs using Dell Equallogic hardware VSS provider in some cases datavhd/vhdx that we read from VSS snapshot could be inconsistent Cause During Hyper-V backup, we execute VSS API call DoSnapshotSet, as soon as it completes, we execute ImportSnapshot VSS API call, without...