SB2017070610 - Two vulnerabilities in Cisco ASR 5000 Series
Published: July 6, 2017 Updated: July 7, 2017
Security Bulletin ID
SB2017070610
Severity
Low
Patch available
YES
Number of vulnerabilities
2
Exploitation vector
Remote access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 2 secuirty vulnerabilities.
1) Denial of service (CVE-ID: CVE-2017-6729)
The vulnerability allows a remote unauthenticated attacker to cause DoS condition.The weakness exists in the Border Gateway Protocol (BGP) processing functionality of the Cisco StarOS operating system for Cisco ASR 5000 Series Routers and Cisco Virtualized Packet Core (VPC) Software due to improper boundary controls for the BGP peering sessions list. A remote attacker can send specially crafted TCP packets to an IPv4 or IPv6 interface and cause the BGP process to reload.
Successful exploitation of the vulnerability results in denial of service.
2) OS command injection (CVE-ID: CVE-2017-6707)
The vulnerability allows a local attacker to execute arbitrary shell commands.The weakness exists in the CLI command-parsing code of the Cisco StarOS operating system due to insufficient sanitization of commands before inserting them into Linux shell commands. A local attacker can break from the StarOS CLI, submit and execute a specially crafted CLI command with root privileges.
Successful exploitation of the vulnerability may result in system compromise.
Remediation
Install update from vendor's website.