CVE-2017-3808: Buffer Overflow

Published Apr 20, 2017

Updated

A vulnerability in the Session Initiation Protocol (SIP) UDP throttling process of Cisco Unified Communications Manager (Cisco Unified CM) could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to insufficient rate limiting protection. An attacker could exploit this vulnerability by sending the affected device a high rate of SIP messages. An exploit could allow the attacker to cause the device to reload unexpectedly. The device and services will restart automatically. This vulnerability affects Cisco Unified Communications Manager (CallManager) releases prior to the first fixed release; the following list indicates the first minor release that includes the fix for this vulnerability: 10.5.2.14900-16 11.0.1.23900-5 11.5.1.12900-2. Cisco Bug IDs: CSCuz72455.

Affected Software

20 affected components

Cisco Unified Communications Manager=10.0\(1.10000.12\)

Cisco Unified Communications Manager=10.0_base

Cisco Unified Communications Manager=10.5\(0.98000.88\)

Cisco Unified Communications Manager=10.5\(1.98991.13\)

Cisco Unified Communications Manager=10.5\(1.99995.9\)

Cisco Unified Communications Manager=10.5\(2.10000.5\)

Cisco Unified Communications Manager=10.5\(2.12901.1\)

Cisco Unified Communications Manager=10.5\(2.13900.9\)

Cisco Unified Communications Manager=10.5\(3.10000.9\)

Cisco Unified Communications Manager=10.5_base

Cisco Unified Communications Manager=11.0\(0.98000.225\)

Cisco Unified Communications Manager=11.0\(1.10000.10\)

Cisco Unified Communications Manager=11.5\(0.98000.480\)

Cisco Unified Communications Manager=11.5\(0.98000.486\)

Cisco Unified Communications Manager=11.5\(0.99838.4\)

Cisco Unified Communications Manager=11.5\(1.2\)

Cisco Unified Communications Manager=11.5\(1.10000.6\)

Cisco Unified Communications Manager=11.5\(1.11007.2\)

Cisco Unified Communications Manager=11.5\(1.12000.1\)

Cisco Unified Communications Manager=11.5.0

Remediation

Recommended actions to resolve this vulnerability, in priority order.

Upgrade
Upgrade Cisco Unified Communications Manager (Cisco Unified CM) (CallManager) to a version that resolves this vulnerability.
Fixed in 10.5.2.14900-16
Upgrade
Upgrade Cisco Unified Communications Manager (Cisco Unified CM) (CallManager) to a version that resolves this vulnerability.
Fixed in 11.0.1.23900-5
Upgrade
Upgrade Cisco Unified Communications Manager (Cisco Unified CM) (CallManager) to a version that resolves this vulnerability.
Fixed in 11.5.1.12900-2
Operational
After upgrading to a first fixed release, allow the device/services to restart automatically (unexpected reloads may occur during exploitation).

Event History

Apr 20, 2017

CVE Published

via MITRE·10:00 PM

Data Sourced

via MITRE·10:00 PM

DescriptionWeakness

Data Sourced

via NVD·10:59 PM

DescriptionSeverityWeaknessAffected Software

Frequently Asked Questions

What is the severity of CVE-2017-3808?

CVE-2017-3808 has a high severity rating due to its potential to cause a denial of service condition.

How do I fix CVE-2017-3808?

To fix CVE-2017-3808, upgrade to a Cisco Unified Communications Manager version that contains the security patch.

What systems are affected by CVE-2017-3808?

CVE-2017-3808 affects multiple versions of Cisco Unified Communications Manager, including versions 10.0, 10.5, and 11.0.

Can CVE-2017-3808 be exploited remotely?

Yes, CVE-2017-3808 can be exploited remotely by an unauthenticated attacker.

What kind of attack does CVE-2017-3808 facilitate?

CVE-2017-3808 can facilitate a denial of service attack, disrupting the availability of the affected Cisco Unified Communications Manager.