Multiple vulnerabilities in Cisco Wireless LAN Controller



Published: 2019-10-16 | Updated: 2019-11-08
Risk Medium
Patch available YES
Number of vulnerabilities 2
CVE-ID CVE-2019-15266
CVE-2019-15276
CWE-ID CWE-22
CWE-20
Exploitation vector Network
Public exploit Public exploit code for vulnerability #2 is available.
Vulnerable software
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Cisco Wireless LAN Controller
Hardware solutions / Firmware

Vendor Cisco Systems, Inc

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

Updated 08.11.2019
Added vulnerability #2.

1) Path traversal

EUVDB-ID: #VU22603

Risk: Low

CVSSv3.1: 3.9 [CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-15266

CWE-ID: CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Exploit availability: No

Description

The vulnerability allows a local user to perform directory traversal attacks.

The vulnerability exists due to improper sanitization of user-supplied input in command-line parameters that describe filenames. A local user can send a specially crafted HTTP request and read arbitrary files on the system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Cisco Wireless LAN Controller: 8.0.0 - 8.9

External links

http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20191016-wlc-pathtrav


Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Input validation error

EUVDB-ID: #VU22602

Risk: Medium

CVSSv3.1: 6.9 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H/E:P/RL:O/RC:C]

CVE-ID: CVE-2019-15276

CWE-ID: CWE-20 - Improper input validation

Exploit availability: Yes

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists in the web interface due to a failure of the HTTP parsing engine to handle specially crafted URLs. A remote authenticated attacker can send a specially crafted URL to the web interface of the affected device and cause a denial of service condition on the target system.

Conversely, an unauthenticated attacker could exploit this vulnerability by persuading a user of the web interface to click the crafted URL.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Cisco Wireless LAN Controller: 8.4 - 8.9

External links

http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20191106-wlc-dos


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.



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