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CVE-2017-5243

UnknownEPSS 0.51%

Last modified

CVE-2017-5243 is a vulnerability of currently unknown severity. The default SSH configuration in Rapid7 Nexpose hardware appliances shipped before June 2017 does not specify desired algorithms for key exchange and other important functions. As a result, it falls back to allowing ALL algorithms supported by the relevant version of OpenSSH and makes the installations vulnerable to a range of MITM, downgrade, and decryption attacks.. EPSS estimates a 0.51% chance of exploitation in the next 30 days.

Description

The default SSH configuration in Rapid7 Nexpose hardware appliances shipped before June 2017 does not specify desired algorithms for key exchange and other important functions. As a result, it falls back to allowing ALL algorithms supported by the relevant version of OpenSSH and makes the installations vulnerable to a range of MITM, downgrade, and decryption attacks.

Metrics

EPSS Probability
0.51%

39.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
Rapid7Nexpose<= 6.4.40

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2017-5243?
The default SSH configuration in Rapid7 Nexpose hardware appliances shipped before June 2017 does not specify desired algorithms for key exchange and other important functions. As a result, it falls back to allowing ALL algorithms supported by the relevant version of OpenSSH and makes the installations vulnerable to a range of MITM, downgrade, and decryption attacks.
How severe is CVE-2017-5243?
Severity scoring for CVE-2017-5243 is pending analysis. The EPSS model estimates a 0.51% probability of exploitation in the next 30 days.
How do I fix CVE-2017-5243?
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-2017-5243?

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

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Source: NVD / NIST