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CVE-2019-18863

MEDIUMCVSS 5.9/10EPSS 0.51%

Last modified

CVE-2019-18863 is a medium-severity vulnerability rated 5.9/10 on the CVSS scale. A key length vulnerability in the implementation of the SRTP 128-bit key on Mitel 6800 and 6900 SIP series phones, versions 5.1.0.2051 SP2 and earlier, could allow an attacker to launch a man-in-the-middle attack when SRTP is used in a call. A successful exploit may allow the attacker to intercept sensitive information.. EPSS estimates a 0.51% chance of exploitation in the next 30 days.

Description

A key length vulnerability in the implementation of the SRTP 128-bit key on Mitel 6800 and 6900 SIP series phones, versions 5.1.0.2051 SP2 and earlier, could allow an attacker to launch a man-in-the-middle attack when SRTP is used in a call. A successful exploit may allow the attacker to intercept sensitive information.

Metrics

CVSS 3.1
5.9/10

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

EPSS Probability
0.51%

39.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
Mitel6863i Firmware< 5.1.0.2051
Mitel6863i Firmware5.1.0.2051
Mitel6865i Firmware< 5.1.0.2051
Mitel6865i Firmware5.1.0.2051
Mitel6867i Firmware< 5.1.0.2051
Mitel6867i Firmware5.1.0.2051
Mitel6869i Firmware< 5.1.0.2051
Mitel6869i Firmware5.1.0.2051
Mitel6873i Firmware< 5.1.0.2051
Mitel6873i Firmware5.1.0.2051
Mitel6920 Firmware< 5.1.0.2051
Mitel6920 Firmware5.1.0.2051
Mitel6930 Firmware< 5.1.0.2051
Mitel6930 Firmware5.1.0.2051
Mitel6940 Firmware< 5.1.0.2051
Mitel6940 Firmware5.1.0.2051

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2019-18863?
A key length vulnerability in the implementation of the SRTP 128-bit key on Mitel 6800 and 6900 SIP series phones, versions 5.1.0.2051 SP2 and earlier, could allow an attacker to launch a man-in-the-middle attack when SRTP is used in a call. A successful exploit may allow the attacker to intercept sensitive information.
How severe is CVE-2019-18863?
CVE-2019-18863 has a CVSS score of 5.9/10 (MEDIUM severity). The EPSS model estimates a 0.51% probability of exploitation in the next 30 days.
How do I fix CVE-2019-18863?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2019-18863?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST