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CVE-2020-16134

HIGHCVSS 8/10EPSS 0.81%

Last modified

CVE-2020-16134 is a high-severity vulnerability rated 8/10 on the CVSS scale. An issue was discovered on Swisscom Internet Box 2, Internet Box Standard, Internet Box Plus prior to 10.04.38, Internet Box 3 prior to 11.01.20, and Internet Box light prior to 08.06.06. Given the (user-configurable) credentials for the local Web interface or physical access to a device's plus or reset button, an attacker can create a user with elevated privileges on the Sysbus-API. EPSS estimates a 0.81% chance of exploitation in the next 30 days.

Description

An issue was discovered on Swisscom Internet Box 2, Internet Box Standard, Internet Box Plus prior to 10.04.38, Internet Box 3 prior to 11.01.20, and Internet Box light prior to 08.06.06. Given the (user-configurable) credentials for the local Web interface or physical access to a device's plus or reset button, an attacker can create a user with elevated privileges on the Sysbus-API. This can then be used to modify local or remote SSH access, thus allowing a login session as the superuser.

Metrics

CVSS 3.1
8/10

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

EPSS Probability
0.81%

52.4th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

VendorProductVersions
SwisscomInternet-Box 2 Firmware< 10.04.38
SwisscomInternet-Box Standard Firmware< 10.04.38
SwisscomInternet-Box Plus Firmware< 10.04.38
SwisscomInternet-Box 3 Firmware< 11.01.20
SwisscomInternet-Box Light Firmware< 08.06.06

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2020-16134?
An issue was discovered on Swisscom Internet Box 2, Internet Box Standard, Internet Box Plus prior to 10.04.38, Internet Box 3 prior to 11.01.20, and Internet Box light prior to 08.06.06. Given the (user-configurable) credentials for the local Web interface or physical access to a device's plus or reset button, an attacker can create a user with elevated privileges on the Sysbus-API. This can then be used to modify local or remote SSH access, thus allowing a login session as the superuser.
How severe is CVE-2020-16134?
CVE-2020-16134 has a CVSS score of 8/10 (HIGH severity). The EPSS model estimates a 0.81% probability of exploitation in the next 30 days.
How do I fix CVE-2020-16134?
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-2020-16134?

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

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Source: NVD / NIST