medium
6.5
CWE
22
Advisory Published
Updated

CVE-2021-1385: Cisco IOx Application Environment Path Traversal Vulnerability

First published: Wed Mar 24 2021(Updated: )

A vulnerability in the Cisco IOx application hosting environment of multiple Cisco platforms could allow an authenticated, remote attacker to conduct directory traversal attacks and read and write files on the underlying operating system or host system. This vulnerability occurs because the device does not properly validate URIs in IOx API requests. An attacker could exploit this vulnerability by sending a crafted API request that contains directory traversal character sequences to an affected device. A successful exploit could allow the attacker to read or write arbitrary files on the underlying operating system.

Credit: ykramarz@cisco.com

Affected SoftwareAffected VersionHow to fix
Cisco IOS=15.8\(3\)m2a
Cisco IOS=15.8\(3\)m3
Cisco IOS=15.8\(3\)m4
Cisco IOS=15.8\(3\)m5
Cisco IOS=15.8\(3\)m6
Cisco IOS=15.9\(3\)m
Cisco IOS=15.9\(3\)m1
Cisco IOS=15.9\(3\)m2
Cisco IOS=15.9\(3\)m2a
Cisco IOS=15.9\(3\)m3
Cisco IOS XE=16.11.1
Cisco IOS XE=16.11.1a
Cisco IOS XE=16.11.1b
Cisco IOS XE=16.11.1c
Cisco IOS XE=16.11.1s
Cisco IOS XE=16.11.2
Cisco IOS XE=16.12.1
Cisco IOS XE=16.12.1a
Cisco IOS XE=16.12.1c
Cisco IOS XE=16.12.1s
Cisco IOS XE=16.12.1t
Cisco IOS XE=16.12.1w
Cisco IOS XE=16.12.1x
Cisco IOS XE=16.12.1y
Cisco IOS XE=16.12.1z
Cisco IOS XE=16.12.1z1
Cisco IOS XE=16.12.1za
Cisco IOS XE=16.12.2
Cisco IOS XE=16.12.2a
Cisco IOS XE=16.12.2s
Cisco IOS XE=16.12.2t
Cisco IOS XE=16.12.3
Cisco IOS XE=16.12.3a
Cisco IOS XE=16.12.3s
Cisco IOS XE=16.12.4
Cisco IOS XE=16.12.4a
Cisco IOS XE=16.12.5
Cisco IOS XE=17.1.1
Cisco IOS XE=17.1.1a
Cisco IOS XE=17.1.1s
Cisco IOS XE=17.1.1t
Cisco IOS XE=17.1.2
Cisco IOS XE=17.1.3
Cisco IOS XE=17.2.1
Cisco IOS XE=17.2.1a
Cisco IOS XE=17.2.1r
Cisco IOS XE=17.2.1v
Cisco IOS XE=17.2.2
Cisco IOS XE=17.3.1
Cisco IOS XE=17.3.1a
Cisco IOS XE=17.3.1w
Cisco IOS XE=17.3.1x
Cisco IOS XE=17.3.2
Cisco IOS XE=17.3.2a
Cisco IOS XE=17.4.1
Cisco IOS XE=17.4.1a
Cisco IOS XE=17.4.1b

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Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2021-1385?

    CVE-2021-1385 has a CVSS score of 7.6, indicating it is of significant severity.

  • How do I fix CVE-2021-1385?

    To fix CVE-2021-1385, update to the recommended patched versions of Cisco IOS or IOS XE as specified in Cisco's security advisory.

  • Who is affected by CVE-2021-1385?

    CVE-2021-1385 affects multiple versions of Cisco IOS and IOS XE across various Cisco platforms that use the IOx application hosting environment.

  • What types of attacks can CVE-2021-1385 facilitate?

    CVE-2021-1385 allows authenticated remote attackers to conduct directory traversal attacks, potentially accessing or modifying files on the host system.

  • What conditions need to be met for CVE-2021-1385 to be exploited?

    To exploit CVE-2021-1385, an attacker must be authenticated to the device and have the ability to send specially crafted requests.

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