The auth_password function in auth-passwd.c in sshd in OpenSSH before 7.3 does not limit password lengths for password authentication, which allows remote attackers to cause a denial of service (crypt CPU consumption) via a long string.
Published 2016-08-07 21:59:10
Updated 2022-12-13 12:15:24
Source MITRE
View at NVD,   CVE.org
Vulnerability category: Input validationDenial of service

Threat overview for CVE-2016-6515

Top countries where our scanners detected CVE-2016-6515
Top open port discovered on systems with this issue 22
IPs affected by CVE-2016-6515 1,484,501
Threat actors abusing to this issue? Yes
Find out if you* are affected by CVE-2016-6515!
*Directly or indirectly through your vendors, service providers and 3rd parties. Powered by attack surface intelligence from SecurityScorecard.

Exploit prediction scoring system (EPSS) score for CVE-2016-6515

Probability of exploitation activity in the next 30 days: 4.50%

Percentile, the proportion of vulnerabilities that are scored at or less: ~ 92 % EPSS Score History EPSS FAQ

CVSS scores for CVE-2016-6515

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Source
7.8
HIGH AV:N/AC:L/Au:N/C:N/I:N/A:C
10.0
6.9
nvd@nist.gov
7.5
HIGH CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
3.9
3.6
nvd@nist.gov

CWE ids for CVE-2016-6515

  • The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.
    Assigned by: nvd@nist.gov (Primary)

References for CVE-2016-6515

Products affected by CVE-2016-6515

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