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CVE-2016-0787

UnknownEPSS 2.70%

Last modified

CVE-2016-0787 is a vulnerability of currently unknown severity. The diffie_hellman_sha256 function in kex.c in libssh2 before 1.7.0 improperly truncates secrets to 128 or 256 bits, which makes it easier for man-in-the-middle attackers to decrypt or intercept SSH sessions via unspecified vectors, aka a "bits/bytes confusion bug.". EPSS estimates a 2.70% chance of exploitation in the next 30 days.

Description

The diffie_hellman_sha256 function in kex.c in libssh2 before 1.7.0 improperly truncates secrets to 128 or 256 bits, which makes it easier for man-in-the-middle attackers to decrypt or intercept SSH sessions via unspecified vectors, aka a "bits/bytes confusion bug."

Metrics

EPSS Probability
2.70%

84.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
FedoraprojectFedora22
FedoraprojectFedora23
OpensuseOpensuse13.2
Libssh2Libssh2<= 1.6.0
DebianDebian Linux7.0
DebianDebian Linux8.0

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2016-0787?
The diffie_hellman_sha256 function in kex.c in libssh2 before 1.7.0 improperly truncates secrets to 128 or 256 bits, which makes it easier for man-in-the-middle attackers to decrypt or intercept SSH sessions via unspecified vectors, aka a "bits/bytes confusion bug."
How severe is CVE-2016-0787?
Severity scoring for CVE-2016-0787 is pending analysis. The EPSS model estimates a 2.70% probability of exploitation in the next 30 days.
How do I fix CVE-2016-0787?
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-2016-0787?

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

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Source: NVD / NIST