SB2017021705 - Multiple vulnerabilities in Cisco Secure Access Control System (ACS)

CSH
CYBERSECURITY HELP
Sign In REGISTER

Main Vulnerability Database SB2017021705

SB2017021705 - Multiple vulnerabilities in Cisco Secure Access Control System (ACS)

Published: February 17, 2017

Security Bulletin ID SB2017021705
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 4
Exploitation vector Remote access
Highest impact Information disclosure

Breakdown by Severity

Medium 25% Low 75%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 4 vulnerabilities.


1) XML injection (CVE-ID: CVE-2017-3839)

CWE-ID: CWE-611 - Improper Restriction of XML External Entity Reference ('XXE')

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green


The vulnerability allows a remote attacker to obtain potentially sensitive information.

The vulnerability exists due to insufficient sanitization of user-supplied data passed in Cisco Secure Access Control System (ACS) when parsing XML files. A remote attacker can send a specially crafted XML file and obtain potentially sensitive information.


2) Information disclosure (CVE-ID: CVE-2017-3841)

CWE-ID: CWE-200 - Exposure of sensitive information to an unauthorized actor

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear


The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists in Cisco Secure Access Control System (ACS) due to improper security restrictions. A remote attacker can directly access certain pages and obtain potentially sensitive information.

3) Open redirect (CVE-ID: CVE-2017-3840)

CWE-ID: CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:U/U:Clear


The disclosed vulnerability allows a remote attacker to perform phishing attacks.

The vulnerability exists due to insufficient sanitization of user-supplied data when redirecting users to external websites. A remote attacker can trick the victim to follow a specially crafted link and perform phishing attacks.


4) DOM-based cross-site scripting (CVE-ID: CVE-2017-3838)

CWE-ID: CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:U/U:Clear


The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.

The vulnerability exists due to insufficient sanitization of user-supplied data in Cisco Secure Access Control System (ACS). A remote attacker can trick the victim to follow a specially crafted link and execute arbitrary HTML and script code in user's browser in context of vulnerable website.

Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.


Remediation

Install update from vendor's website.

References