CVE-2018-11518 Cross-site request forgery in n/a
Attackers can forge service activation requests on legacy HCL IVR systems by replaying predictable DTMF tones, bypassing intended verification mechanisms.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2018-11518?
CVE-2018-11518 is a high-severity vulnerability in n/a, published on 30 May 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A vulnerability allows a phreaking attack on HCL legacy IVR systems that do not use VoIP. These IVR systems rely on various frequencies of audio signals; based on the frequency, certain commands and functions are processed. Since these frequencies are accepted within a phone call, an attacker can record these frequencies and use them for service activations. This is a request-forgery issue when the required series of DTMF signals for a service activation is predictable (e.g., the IVR system does not speak a nonce to the caller). In this case, the IVR system accepts an activation request from a less-secure channel (any loudspeaker in the caller's physical environment) without verifying that the request was intended (it matches a nonce sent over a more-secure channel to the caller's earpiece).
Weakness: CWE-20
Which versions are affected by CVE-2018-11518?
It affects 1 product.
Products include Hcltech Legacy Ivr Firmware.
How do I fix CVE-2018-11518?
No fix has been published for CVE-2018-11518 yet. Limit exposure of the affected software until one is available.
Is CVE-2018-11518 being exploited?
There is no known exploitation of CVE-2018-11518 in the wild and no public exploit code.
Sources
Also known as GHSA-vv3x-8gqc-m4c5.