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CVE-2015-1782

libssh2: Using SSH_MSG_KEXINIT data unbounded

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Severity

Low

Red Hat Product Security

7.8

CVSS 2.0

Review impact separately from score.

Published · March 11, 2015

Updated · November 21, 2025

Description

A flaw was found in the way the kex_agree_methods() function of libssh2 performed a key exchange when negotiating a new SSH session. A man-in-the-middle attacker could use a crafted SSH_MSG_KEXINIT packet to crash a connecting libssh2 client.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 2.0 · 7.8
AV:N/AC:L/Au:N/C:N/I:N/A:C

CWE-130 · Improper Handling of Length Parameter Inconsistency