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CVE-2018-0381

MEDIUMCVSS 6.8/10EPSS 0.52%

Last modified

CVE-2018-0381 is a medium-severity vulnerability rated 6.8/10 on the CVSS scale. A vulnerability in the Cisco Aironet Series Access Points (APs) software could allow an authenticated, adjacent attacker to cause an affected device to reload unexpectedly, resulting in a denial of service (DoS) condition. The vulnerability is due to a deadlock condition that may occur when an affected AP attempts to dequeue aggregated traffic that is destined to an attacker-controlled wireless client. EPSS estimates a 0.52% chance of exploitation in the next 30 days.

Description

A vulnerability in the Cisco Aironet Series Access Points (APs) software could allow an authenticated, adjacent attacker to cause an affected device to reload unexpectedly, resulting in a denial of service (DoS) condition. The vulnerability is due to a deadlock condition that may occur when an affected AP attempts to dequeue aggregated traffic that is destined to an attacker-controlled wireless client. An attacker who can successfully transition between multiple Service Set Identifiers (SSIDs) hosted on the same AP while replicating the required traffic patterns could trigger the deadlock condition. A watchdog timer that detects the condition will trigger a reload of the device, resulting in a DoS condition while the device restarts.

Metrics

CVSS 3.1
6.8/10

CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H

EPSS Probability
0.52%

40.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
CiscoAironet Access Points8.2\(166.0\)
CiscoAironet Access Points8.2\(167.3\)
CiscoAironet Access Points8.3\(133.0\)
CiscoAironet Access Points8.3\(141.10\)
CiscoAironet Access Points8.5\(120.0\)
CiscoAironet Access Points8.7\(1.96\)
CiscoAironet Access Points8.7\(1.99\)
CiscoAironet Access Points8.7\(1.107\)

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2018-0381?
A vulnerability in the Cisco Aironet Series Access Points (APs) software could allow an authenticated, adjacent attacker to cause an affected device to reload unexpectedly, resulting in a denial of service (DoS) condition. The vulnerability is due to a deadlock condition that may occur when an affected AP attempts to dequeue aggregated traffic that is destined to an attacker-controlled wireless client. An attacker who can successfully transition between multiple Service Set Identifiers (SSIDs) hosted on the same AP while replicating the required traffic patterns could trigger the deadlock condition. A watchdog timer that detects the condition will trigger a reload of the device, resulting in a DoS condition while the device restarts.
How severe is CVE-2018-0381?
CVE-2018-0381 has a CVSS score of 6.8/10 (MEDIUM severity). The EPSS model estimates a 0.52% probability of exploitation in the next 30 days.
How do I fix CVE-2018-0381?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2018-0381?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST