CVE-2016-6422
Cisco IOS 12.2(33)SXJ9 on Supervisor Engine 32 and 720 modules for 6500 and 7600 devices mishandles certain operators, flags, and keywords in TCAM share ACLs, which allows remote attackers to bypass intended access restrictions by sending packets that…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.50%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
Cisco IOS 12.2(33)SXJ9 on Supervisor Engine 32 and 720 modules for 6500 and 7600 devices mishandles certain operators, flags, and keywords in TCAM share ACLs, which allows remote attackers to bypass intended access restrictions by sending packets that should have been recognized by a filter, aka Bug ID CSCuy64806.
- CVSS 3.0
- 7.5 HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- EPSS
- 1.50% probability · 73th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-20
- Affected
- cisco/ios
- Source
- psirt@cisco.com
References
- http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20161005-catalystMitigation, Vendor Advisory
- http://www.securityfocus.com/bid/93404
- http://www.securitytracker.com/id/1036954
- http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20161005-catalystMitigation, Vendor Advisory
- http://www.securityfocus.com/bid/93404
- http://www.securitytracker.com/id/1036954
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.