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CVE-2021-43106

MEDIUMCVSS 6.1/10EPSS 0.67%

Last modified

CVE-2021-43106 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. A Header Injection vulnerability exists in Compass Plus TranzWare Online FIMI Web Interface Tranzware Online (TWO) 5.3.33.3 F38 and FIMI 4.2.19.4 25.The HTTP host header can be manipulated and cause the application to behave in unexpected ways. Any changes made to the header would just cause the request to be sent to a completely different Domain/IP address. EPSS estimates a 0.67% chance of exploitation in the next 30 days.

Description

A Header Injection vulnerability exists in Compass Plus TranzWare Online FIMI Web Interface Tranzware Online (TWO) 5.3.33.3 F38 and FIMI 4.2.19.4 25.The HTTP host header can be manipulated and cause the application to behave in unexpected ways. Any changes made to the header would just cause the request to be sent to a completely different Domain/IP address. This is due to that the server implicitly trusts the Host header, and fails to validate or escape it properly. An attacker can use this input to redirect target users to a malicious domain/web page. This would result in expanding the potential to further attacks and malicious actions.

Metrics

CVSS 3.1
6.1/10

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

EPSS Probability
0.67%

47.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
CompassplusTranzware Online5.3.33.3_f38
CompassplusTranzware Online Financial Institution Maintenance Interface4.2.19.4.25

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2021-43106?
A Header Injection vulnerability exists in Compass Plus TranzWare Online FIMI Web Interface Tranzware Online (TWO) 5.3.33.3 F38 and FIMI 4.2.19.4 25.The HTTP host header can be manipulated and cause the application to behave in unexpected ways. Any changes made to the header would just cause the request to be sent to a completely different Domain/IP address. This is due to that the server implicitly trusts the Host header, and fails to validate or escape it properly. An attacker can use this input to redirect target users to a malicious domain/web page. This would result in expanding the potential to further attacks and malicious actions.
How severe is CVE-2021-43106?
CVE-2021-43106 has a CVSS score of 6.1/10 (MEDIUM severity). The EPSS model estimates a 0.67% probability of exploitation in the next 30 days.
How do I fix CVE-2021-43106?
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-2021-43106?

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

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Source: NVD / NIST