Bug 1493998 – CVE-2017-14623 gopkg.in-ldap.v2: Authentication bypass via empty password

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Bug 1493998 - (CVE-2017-14623) CVE-2017-14623 gopkg.in-ldap.v2: Authentication bypass via empty password

Summary:	CVE-2017-14623 gopkg.in-ldap.v2: Authentication bypass via empty password

Status:	NEW

Aliases:	CVE-2017-14623

Product:	Security Response
Classification:	Other
Component:	vulnerability (Show other bugs)
Sub Component:
Version:	unspecified
Hardware:	All Linux

Priority	medium Severity medium
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Assigned To:	Red Hat Product Security
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Whiteboard:	impact=moderate,public=20170824,repor...
Keywords:	Security

Depends On:	1566145
Blocks:	1493999
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Reported:	2017-09-21 05:54 EDT by Andrej Nemec
Modified:	2018-06-29 18:28 EDT (History)
CC List:	9 users (show)

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Description Andrej Nemec 2017-09-21 05:54:11 EDT

In the ldap.v2 (aka go-ldap) package through 2.5.0 for Go, an attacker may be able to login with an empty password. This issue affects an application using this package if these conditions are met: (1) it relies only on the return error of the Bind function call to determine whether a user is authorized (i.e., a nil return value is interpreted as successful authorization) and (2) it is used with an LDAP server allowing unauthenticated bind.

Upstream patch:

https://github.com/go-ldap/ldap/commit/95ede1266b237bf8e9aa5dce0b3250e51bfefe66

Upstream issue:

https://github.com/go-ldap/ldap/pull/126

Comment 3 Andrej Nemec 2018-05-14 08:11:35 EDT

Statement:

This issue affects the versions of the go in-ldap package as shipped with Red Hat OpenShift Enterprise. However OpenShift explicitly checks for blank passwords in order to prevent anonymous LDAP binds, as such the OpenShift product itself is not directly affected by this vulnerability. Red Hat Product Security has rated this issue as having security impact of Moderate. A future update may address this issue. For additional information, refer to the Issue Severity Classification: https://access.redhat.com/security/updates/classification/.

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