Description
The VTY authentication implementation in Cisco IOS XE 03.02.xxSE and 03.03.xxSE incorrectly relies on the Linux-IOS internal-network configuration, which allows remote attackers to bypass authentication by leveraging access to a 192.168.x.2 source IP address, aka Bug ID CSCuj90227.
References
- cisco-iosxe-cve20136979-sec-bypass(89901) vdb-entry
- 1029537 vdb-entry
- 101351 vdb-entry
- 64502 vdb-entry
- 20131223 Cisco IOS XE Software Telnet Authentication Bypass Vulnerability vendor-advisory