7.8
CWE
NVD-CWE-Other
Advisory Published
Updated

CVE-2009-2053

First published: Thu Aug 27 2009(Updated: )

Cisco Unified Communications Manager (aka CUCM, formerly CallManager) 4.x, 5.x before 5.1(3g), 6.x before 6.1(4), 7.0 before 7.0(2a)su1, and 7.1 before 7.1(2) allows remote attackers to cause a denial of service (file-descriptor exhaustion and SCCP outage) via a flood of TCP packets, aka Bug ID CSCsx32236.

Credit: ykramarz@cisco.com

Affected SoftwareAffected VersionHow to fix
Cisco Unified Communications Manager Session Management Edition>=6.1\(1\)<6.1\(4\)
Cisco Unified Communications Manager Session Management Edition>=5.0<5.1\(3g\)
Cisco Unified Communications Manager Session Management Edition>=7.1<7.1\(2\)
Cisco Unified Communications Manager Session Management Edition>=7.0<7.0\(2a\)su1

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Frequently Asked Questions

  • What is the severity of CVE-2009-2053?

    CVE-2009-2053 is categorized as a denial of service vulnerability affecting multiple versions of Cisco Unified Communications Manager.

  • How do I fix CVE-2009-2053?

    To mitigate CVE-2009-2053, you should update Cisco Unified Communications Manager to versions 5.1(3g), 6.1(4), 7.0(2a)su1 or 7.1(2) or later.

  • What systems are affected by CVE-2009-2053?

    CVE-2009-2053 affects Cisco Unified Communications Manager versions 4.x, 5.x, 6.x, and 7.x prior to their respective fixed versions.

  • What type of attack exploits CVE-2009-2053?

    CVE-2009-2053 can be exploited through a flood of TCP packets that leads to file-descriptor exhaustion and an SCCP outage.

  • Is CVE-2009-2053 easy to exploit?

    The denial of service vulnerability CVE-2009-2053 requires remote access and is primarily dependent on the ability to send a high volume of TCP packets.

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