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ptsecurityPositive TechnologiesPT-2018-28
HistoryJan 06, 2017 - 12:00 a.m.

PT-2018-28: Arbitrary Command Execution in Cisco Secure ACS

2017-01-0600:00:00
Positive Technologies
www.ptsecurity.com
11

9.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

10 High

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:N/AC:L/Au:N/C:C/I:C/A:C

0.023 Low

EPSS

Percentile

89.5%

PT-2018-28: Arbitrary Command Execution in Cisco Secure ACS

Vulnerable product

Cisco ACS
Version: 5.8.0.32.8 and earlier

Link:
https://www.cisco.com/

Severity level

Severity level: High
Impact: Remote command execution
Access Vector: Remote

CVSS v3:
Base Score: 9.8
Vector: (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)

CVE: CVE-2018-0147

Vulnerability description

The specialists of the Positive Research center have detected an Arbitrary Command Execution vulnerability in Cisco Secure ACS.

A vulnerability in Cisco Secure Access Control System (ACS), due to insecure Java deserialization of user-supplied content, allows an unauthenticated, remote attacker to execute arbitrary commands on an affected device with root privileges by sending a crafted serialized Java object.

How to fix

Use vendor’s advisory:
<https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180502-acs1&gt;

Advisory status

01.06.2017 - Vendor gets vulnerability details
07.03.2018 - Vendor releases fixed version and details
11.12.2018 - Public disclosure

Credits

The vulnerability was detected by Mikhail Klyuchnikov, Yury Aleynov, Positive Research Center (Positive Technologies Company)

References

<http://en.securitylab.ru/lab/PT-2018-28&gt;

Reports on the vulnerabilities previously discovered by Positive Research:

https://www.ptsecurity.com/
<https://en.securitylab.ru/lab/&gt;

About Positive Technologies

Positive Technologies is a leading digital security firm with over 15 years of experience in 360° protection of critical IT systems against the most advanced cyberthreats. State-of-the-art solutions are developed at the company’s research center—one of the largest in Europe. Positive Technologies experts have helped to identify and fix over 250 zero-day vulnerabilities in products from Cisco, Google, Honeywell, Huawei, Microsoft, Oracle, SAP, Schneider Electric, Siemens, and others, earning a reputation for world-class expertise in protection of devices and infrastructures at all scales from ATMs to nuclear power stations. Findings by Positive Technologies researchers are used for updating the MaxPatrol knowledge base and for development of security solutions including PT Application Firewall, PT Application Inspector, MaxPatrol. These products allow securing web applications, evaluating network protection, blocking attacks in real time, ensuring compliance with industry and national standards, and training security specialists. Positive Technologies is the organizer of the annual Positive Hack Days international forum and security competition.

9.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

10 High

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:N/AC:L/Au:N/C:C/I:C/A:C

0.023 Low

EPSS

Percentile

89.5%

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