Cisco Bug: CSCvs10135 - Cisco APIC Out Of Band Management IP Tables Bypass Vulnerability
Sep 15, 2020
- Cisco Application Policy Infrastructure Controller (APIC)
Known Affected Releases
Symptom: A vulnerability in the out of band (OOB) management interface IP table rule programming for Cisco Application Policy Infrastructure Controller (APIC) could allow an unauthenticated, remote attacker to bypass configured deny entries for specific IP ports. These IP ports would be permitted to the OOB management interface when, in fact, the packets should be dropped. The vulnerability is due to the configuration of specific IP table entries for which there is a programming logic error that results in the IP port being permitted. An attacker could exploit this vulnerability by sending traffic to the OOB management interface on the targeted device. A successful exploit could allow the attacker to bypass configured IP table rules to drop specific IP port traffic. The attacker has no control over the configuration of the device itself. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability. This advisory is available at the following link: https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iptable-bypass-GxW88XjL Conditions: At the time of publication, this vulnerability affected Cisco APIC releases prior to the first fixed software Release 4.2(3j). At the time of publication, Cisco APIC Release 4.2(3j) and later contained the fix for this vulnerability.
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