PT-2018-10634 · Hcl · Hcl Legacy Ivr Systems

Published 2018-05-30 · Updated 2018-07-20 · CVE-2018-11518

Positive Technologies (AI Summary)

CVSS v2.0

6.8

Medium

Base vector

AV:N/AC:M/Au:N/C:P/I:P/A:P

Name of the Vulnerable Software and Affected Versions HCL legacy IVR systems (affected versions not specified)

Description A phreaking attack can be performed on HCL legacy IVR systems that do not use VoIP, allowing an attacker to record and replay specific audio frequencies to activate services. This issue arises when the required series of DTMF signals for a service activation is predictable, and the IVR system does not verify the request's intent. As a result, the IVR system accepts activation requests from any loudspeaker in the caller's environment without proper verification.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

RCE

Weakness Enumeration

CWE-20

Related Identifiers

CVE-2018-11518

Affected Products

Hcl Legacy Ivr Systems

References · 5

• https://nvd.nist.gov/vuln/detail/CVE-2018-11518 · Security Note
• https://twitter.com/mishradhiraj_/status/1001664204485652482 · Note
• http://virgil-cj.blogspot.com/2018/05/0day-legacy-ivr-lets-phreak.html · Note
• https://datarift.blogspot.com/2018/05/CVE-2018-11518-abusing-ivr-systems.html · Note
• https://twitter.com/mishradhiraj_/status/1001664440759091207 · Note