CVE-2015-5600

Published Aug 3, 2015

Last updated 2 years ago

Overview

Description: The kbdint_next_device function in auth2-chall.c in sshd in OpenSSH through 6.9 does not properly restrict the processing of keyboard-interactive devices within a single connection, which makes it easier for remote attackers to conduct brute-force attacks or cause a denial of service (CPU consumption) via a long and duplicative list in the ssh -oKbdInteractiveDevices option, as demonstrated by a modified client that provides a different password for each pam element on this list.
Source: cve@mitre.org
NVD status: Modified

Hype score: Not currently trending

Risk scores

CVSS 2.0

Type: Primary
Base score: 8.5
Impact score: 7.8
Exploitability score: 10
Vector string: AV:N/AC:L/Au:N/C:P/I:N/A:C

Weaknesses

nvd@nist.gov: CWE-264

Configurations

[
  {
    "nodes": [
      {
        "negate": false,
        "cpeMatch": [
          {
            "criteria": "cpe:2.3:a:openbsd:openssh:*:*:*:*:*:*:*:*",
            "vulnerable": true,
            "matchCriteriaId": "27C9A807-7740-4D75-9B01-91ED53D14C40",
            "versionEndIncluding": "6.9"
          }
        ],
        "operator": "OR"
      }
    ]
  }
]

Overview

Social media

Risk scores

CVSS 2.0

Weaknesses

Configurations

References