Out-of-bounds Write

Affecting libssh2 package, versions <1.8.1-r0

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Overview

An integer overflow flaw which could lead to an out of bounds write was discovered in libssh2 before 1.8.1 in the way SSH_MSG_CHANNEL_REQUEST packets with an exit signal are parsed. A remote attacker who compromises a SSH server may be able to execute code on the client system when a user connects to the server.

References

CVSS Score

8.8
high severity
  • Attack Vector
    Network
  • Attack Complexity
    Low
  • Privileges Required
    None
  • User Interaction
    Required
  • Scope
    Unchanged
  • Confidentiality
    High
  • Integrity
    High
  • Availability
    High
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Credit
Unknown
CVE
CVE-2019-3857
CWE
CWE-190 CWE-787
Snyk ID
SNYK-ALPINE38-LIBSSH2-467495
Disclosed
22 Sep, 2019
Published
22 Sep, 2019