Vulnerability Report

CVE-2016-6252

Title: Shadow Project Shadow Auth Bypass

Auth Bypass

Proof Of Concept

No public PoC currently indexed for CVE-2016-6252.

CWE Category CWE-190

Published Date Feb 17, 2017

Modified Date Jun 17, 2026

Exploit Status Not Found

Score 7.8 CVSS v3.0

Exploit Probability (EPSS)

0.41%

Vulnerability Summary

CVE-2016-6252: Integer overflow in shadow 4.2.1 allows local users to gain privileges via crafted input to newuidmap.

Impacted Vendors

shadow_project 1

blade-group 1

Reference Links

http://www.debian.org/security/2017/dsa-3793 http://www.openwall.com/lists/oss-security/2016/07/19/6 http://www.openwall.com/lists/oss-security/2016/07/19/7 http://www.openwall.com/lists/oss-security/2016/07/20/2 http://www.openwall.com/lists/oss-security/2016/07/25/7 http://www.securityfocus.com/bid/92055 https://bugzilla.suse.com/show_bug.cgi?id=979282 https://github.com/shadow-maint/shadow/issues/27 https://security.gentoo.org/glsa/201706-02 http://www.debian.org/security/2017/dsa-3793 http://www.openwall.com/lists/oss-security/2016/07/19/6 http://www.openwall.com/lists/oss-security/2016/07/19/7 http://www.openwall.com/lists/oss-security/2016/07/20/2 http://www.openwall.com/lists/oss-security/2016/07/25/7 http://www.securityfocus.com/bid/92055 https://bugzilla.suse.com/show_bug.cgi?id=979282 https://github.com/shadow-maint/shadow/issues/27 https://security.gentoo.org/glsa/201706-02

CVSS v3.0

Source Entity [email protected]

Severity HIGH

7.8

Attack Vector

LOCAL

Complexity

LOW

Privileges

N/A

Interaction

NONE

Confidentiality

N/A

Integrity

N/A

Availability

N/A

Scope

UNCHANGED

RAW VECTOR CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS v2.0

Source Entity [email protected]

Severity MEDIUM

4.6

Access Vector

N/A

Authentication

N/A

RAW VECTOR AV:L/AC:L/Au:N/C:P/I:P/A:P

Associated Attack Patterns (CAPEC)

Total: Patterns