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Cisco Bug: CSCur00089 - vdc-admin on N7K can break out of vsh-"chroot" using symbolic links

Last Modified

Sep 09, 2019

Products (7)

  • Cisco Nexus 7000 Series Switches
  • Cisco Nexus 7000 10-Slot Switch
  • Cisco Nexus 7000 4-Slot Switch
  • Cisco Nexus 7000 18-Slot Switch
  • Cisco Nexus 7700 18-Slot Switch
  • Cisco Nexus 7000 9-Slot Switch
  • Cisco Nexus 7700 10-Slot Switch

Known Affected Releases


Description (partial)

Cisco Nexus devices running Cisco NX-OS software contain a symbolic link vulnerability that could allow a local, authenticated attacker to break out of the chroot environment that their Virtual Device Context (VDC) 
has been assigned.  This could result in the attacker gaining the ability to write files to locations that should be restricted to the context to which they belong.  This could also have an extended impact of allowing the 
attacker to read data that should be restricted.

Cisco Nexus devices running an affected version of Cisco NX-OS Software
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Bug Details Include

  • Full Description (including symptoms, conditions and workarounds)
  • Status
  • Severity
  • Known Fixed Releases
  • Related Community Discussions
  • Number of Related Support Cases
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