Description
libssh before 0.7.3 improperly truncates ephemeral secrets generated for the (1) diffie-hellman-group1 and (2) diffie-hellman-group14 key exchange methods to 128 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."
Published: 2016-04-13
Score: 5.9 Medium
EPSS: 3.7% Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories
Source ID Title
Debian DLA Debian DLA DLA-425-1 libssh security update
Debian DSA Debian DSA DSA-3488-1 libssh security update
EUVD EUVD EUVD-2016-0763 libssh before 0.7.3 improperly truncates ephemeral secrets generated for the (1) diffie-hellman-group1 and (2) diffie-hellman-group14 key exchange methods to 128 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."
Ubuntu USN Ubuntu USN USN-2912-1 libssh vulnerabilities
History

No history.

Subscriptions

Canonical Ubuntu Linux
Debian Debian Linux
Fedoraproject Fedora
Libssh Libssh
Redhat Enterprise Linux Rhel Extras Other
cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2024-08-05T22:30:04.158Z

Reserved: 2015-12-16T00:00:00.000Z

Link: CVE-2016-0739

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2016-04-13T17:59:08.413

Modified: 2026-05-06T22:30:45.220

Link: CVE-2016-0739

cve-icon Redhat

Severity : Moderate

Publid Date: 2016-02-23T00:00:00Z

Links: CVE-2016-0739 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses