CVE-2018-0102: Double Free
First published: Thu Jan 18 2018(Updated: )
A vulnerability in the Pong tool of Cisco NX-OS Software could allow an unauthenticated, adjacent attacker to cause a reload of an affected device, resulting in a denial of service (DoS) condition. The vulnerability exists because the affected software attempts to free the same area of memory twice. An attacker could exploit this vulnerability by sending a pong request to an affected device from a location on the network that causes the pong reply packet to egress both a FabricPath port and a non-FabricPath port. An exploit could allow the attacker to cause a dual or quad supervisor virtual port-channel (vPC) to reload. This vulnerability affects the following products when running Cisco NX-OS Software Release 7.2(1)D(1), 7.2(2)D1(1), or 7.2(2)D1(2) with both the Pong and FabricPath features enabled and the FabricPath port is actively monitored via a SPAN session: Cisco Nexus 7000 Series Switches and Cisco Nexus 7700 Series Switches. Cisco Bug IDs: CSCuv98660.
Credit: ykramarz@cisco.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Cisco NX-OS | =7.2\(1\)d\(1\) | |
| Cisco NX-OS | =7.2\(2\)d1\(1\) | |
| Cisco NX-OS | =7.2\(2\)d1\(2\) |
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Reference Links
Frequently Asked Questions
What is the severity of CVE-2018-0102?
The severity of CVE-2018-0102 is classified as high due to its potential to cause a denial of service.
How do I fix CVE-2018-0102?
To fix CVE-2018-0102, upgrade your affected Cisco NX-OS Software to a version that addresses this vulnerability.
Who is affected by CVE-2018-0102?
CVE-2018-0102 affects devices running specific versions of Cisco NX-OS including 7.2(1)d(1), 7.2(2)d1(1), and 7.2(2)d1(2).
What can an attacker do with CVE-2018-0102?
An attacker exploiting CVE-2018-0102 can cause a reload of the affected device, leading to a denial of service condition.
Is authentication required to exploit CVE-2018-0102?
No, CVE-2018-0102 can be exploited by an unauthenticated, adjacent attacker.
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