389-ds-base before versions 1.3.5.17 and 1.3.6.10 is vulnerable to an invalid pointer dereference in the way LDAP bind requests are handled. A remote unauthenticated attacker could use this flaw to make ns-slapd crash via a specially crafted LDAP bind request, resulting in denial of service.

The remote NewStart CGSL host, running version MAIN 4.05, has 389-ds-base packages installed that are affected by a vulnerability:

  - An invalid pointer dereference flaw was found in the way     389-ds-base handled LDAP bind requests. A remote     unauthenticated attacker could use this flaw to make ns-     slapd crash via a specially crafted LDAP bind request,     resulting in denial of service. (CVE-2017-2668)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

This update for 389-ds fixes the following issues :

  - CVE-2017-7551: 389-ds-base: Password brute-force     possible for locked account due to different return     codes (bsc#1051997)

  - CVE-2016-4992: 389-ds: Information disclosure via     repeated use of LDAP ADD operation (bsc#997256)

  - CVE-2016-5405: 389-ds: Password verification vulnerable     to timing attack (bsc#1007004)

  - CVE-2017-2591: 389-ds-base: Heap buffer overflow in     uiduniq.c (bsc#1020670)

  - CVE-2017-2668 389-ds Remote crash via crafted LDAP     messages (bsc#1069067)

  - CVE-2016-0741: 389-ds: worker threads do not detect     abnormally closed connections causing DoS (bsc#1069074)

An update for 389-ds-base is now available for Red Hat Enterprise Linux 7.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

389 Directory Server is an LDAP version 3 (LDAPv3) compliant server.
The base packages include the Lightweight Directory Access Protocol (LDAP) server and command-line utilities for server administration.

Security Fix(es) :

* An invalid pointer dereference flaw was found in the way 389-ds-base handled LDAP bind requests. A remote unauthenticated attacker could use this flaw to make ns-slapd crash via a specially crafted LDAP bind request, resulting in denial of service. (CVE-2017-2668)

Red Hat would like to thank Joachim Jabs (F24) for reporting this issue.

Bug Fix(es) :

* Previously, when adding a filtered role definition that uses the 'nsrole' virtual attribute in the filter, Directory Server terminated unexpectedly. A patch has been applied, and now the roles plug-in ignores all virtual attributes. As a result, an error message is logged when an invalid filter is used. Additionally, the role is deactivated and Directory Server no longer fails. (BZ#1429498)

* In a replication topology, Directory Server incorrectly calculated the size of string format entries when a lot of entries were deleted.
The calculated size of entries was smaller than the actual required size. Consequently, Directory Server allocated insufficient memory and terminated unexpectedly when the data was written to it. With this update, the size of string format entries is now calculated correctly in the described situation and Directory Server no longer terminates unexpectedly. (BZ#1429495)

Note that Tenable Network Security has attempted to extract the preceding description block directly from the corresponding Red Hat security advisory. Virtuozzo provides no description for VZLSA advisories. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

An update for 389-ds-base is now available for Red Hat Enterprise Linux 6.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

389 Directory Server is an LDAP version 3 (LDAPv3) compliant server.
The base packages include the Lightweight Directory Access Protocol (LDAP) server and command-line utilities for server administration.

Security Fix(es) :

* An invalid pointer dereference flaw was found in the way 389-ds-base handled LDAP bind requests. A remote unauthenticated attacker could use this flaw to make ns-slapd crash via a specially crafted LDAP bind request, resulting in denial of service. (CVE-2017-2668)

Red Hat would like to thank Joachim Jabs (F24) for reporting this issue.

Bug Fix(es) :

* Previously, the 'deref' plug-in failed to dereference attributes that use distinguished name (DN) syntax, such as 'uniqueMember'. With this patch, the 'deref' plug-in can dereference such attributes and additionally 'Name and Optional UID' syntax. As a result, the 'deref' plug-in now supports any syntax. (BZ#1435365)

Note that Tenable Network Security has attempted to extract the preceding description block directly from the corresponding Red Hat security advisory. Virtuozzo provides no description for VZLSA advisories. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

According to the version of the 389-ds-base packages installed, the EulerOS installation on the remote host is affected by the following vulnerability :

  - An invalid pointer dereference flaw was found in the     way 389-ds-base handled LDAP bind requests. A remote     unauthenticated attacker could use this flaw to make     ns-slapd crash via a specially crafted LDAP bind     request, resulting in denial of service.
    (CVE-2017-2668)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Remote crash via crafted LDAP messages :

An invalid pointer dereference flaw was found in the way 389-ds-base handled LDAP bind requests. A remote unauthenticated attacker could use this flaw to make ns-slapd crash via a specially crafted LDAP bind request, resulting in denial of service. (CVE-2017-2668)

An update for 389-ds-base is now available for Red Hat Enterprise Linux 7.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

389 Directory Server is an LDAP version 3 (LDAPv3) compliant server.
The base packages include the Lightweight Directory Access Protocol (LDAP) server and command-line utilities for server administration.

Security Fix(es) :

* An invalid pointer dereference flaw was found in the way 389-ds-base handled LDAP bind requests. A remote unauthenticated attacker could use this flaw to make ns-slapd crash via a specially crafted LDAP bind request, resulting in denial of service. (CVE-2017-2668)

Red Hat would like to thank Joachim Jabs (F24) for reporting this issue.

Bug Fix(es) :

* Previously, when adding a filtered role definition that uses the 'nsrole' virtual attribute in the filter, Directory Server terminated unexpectedly. A patch has been applied, and now the roles plug-in ignores all virtual attributes. As a result, an error message is logged when an invalid filter is used. Additionally, the role is deactivated and Directory Server no longer fails. (BZ#1429498)

* In a replication topology, Directory Server incorrectly calculated the size of string format entries when a lot of entries were deleted.
The calculated size of entries was smaller than the actual required size. Consequently, Directory Server allocated insufficient memory and terminated unexpectedly when the data was written to it. With this update, the size of string format entries is now calculated correctly in the described situation and Directory Server no longer terminates unexpectedly. (BZ#1429495)

Security Fix(es) :

  - An invalid pointer dereference flaw was found in the way     389-ds-base handled LDAP bind requests. A remote     unauthenticated attacker could use this flaw to make     ns-slapd crash via a specially crafted LDAP bind     request, resulting in denial of service. (CVE-2017-2668)

Bug Fix(es) :

  - Previously, when adding a filtered role definition that     uses the 'nsrole' virtual attribute in the filter,     Directory Server terminated unexpectedly. A patch has     been applied, and now the roles plug-in ignores all     virtual attributes. As a result, an error message is     logged when an invalid filter is used. Additionally, the     role is deactivated and Directory Server no longer     fails.

  - In a replication topology, Directory Server incorrectly     calculated the size of string format entries when a lot     of entries were deleted. The calculated size of entries     was smaller than the actual required size. Consequently,     Directory Server allocated insufficient memory and     terminated unexpectedly when the data was written to it.
    With this update, the size of string format entries is     now calculated correctly in the described situation and     Directory Server no longer terminates unexpectedly.

An update for 389-ds-base is now available for Red Hat Enterprise Linux 6.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

389 Directory Server is an LDAP version 3 (LDAPv3) compliant server.
The base packages include the Lightweight Directory Access Protocol (LDAP) server and command-line utilities for server administration.

Security Fix(es) :

* An invalid pointer dereference flaw was found in the way 389-ds-base handled LDAP bind requests. A remote unauthenticated attacker could use this flaw to make ns-slapd crash via a specially crafted LDAP bind request, resulting in denial of service. (CVE-2017-2668)

Red Hat would like to thank Joachim Jabs (F24) for reporting this issue.

Bug Fix(es) :

* Previously, the 'deref' plug-in failed to dereference attributes that use distinguished name (DN) syntax, such as 'uniqueMember'. With this patch, the 'deref' plug-in can dereference such attributes and additionally 'Name and Optional UID' syntax. As a result, the 'deref' plug-in now supports any syntax. (BZ#1435365)

The remote Oracle Linux 7 host has packages installed that are affected by a vulnerability as referenced in the ELSA-2017-0920 advisory.

    - Resolves: bug 1437005 - CVE-2017-2668 389-ds-base: Remote crash via crafted LDAP messages

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Security Fix(es) :

  - An invalid pointer dereference flaw was found in the way     389-ds-base handled LDAP bind requests. A remote     unauthenticated attacker could use this flaw to make     ns-slapd crash via a specially crafted LDAP bind     request, resulting in denial of service. (CVE-2017-2668)

Bug Fix(es) :

  - Previously, the 'deref' plug-in failed to dereference     attributes that use distinguished name (DN) syntax, such     as 'uniqueMember'. With this patch, the 'deref' plug-in     can dereference such attributes and additionally 'Name     and Optional UID' syntax. As a result, the 'deref'     plug-in now supports any syntax.

The remote Oracle Linux 6 host has packages installed that are affected by a vulnerability as referenced in the ELSA-2017-0893 advisory.

    - Resolves: bug 1437777 - EMBARGOED CVE-2017-2668 389-ds-base: Remote crash via crafted LDAP messages

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Severity
127328	NewStart CGSL MAIN 4.05 : 389-ds-base Vulnerability (NS-SA-2019-0101)	Nessus	NewStart CGSL Local Security Checks	medium
105366	openSUSE Security Update : 389-ds (openSUSE-2017-1396)	Nessus	SuSE Local Security Checks	critical
101448	Virtuozzo 7 : 389-ds-base / 389-ds-base-devel / 389-ds-base-libs / etc (VZLSA-2017-0920)	Nessus	Virtuozzo Local Security Checks	medium
101444	Virtuozzo 6 : 389-ds-base / 389-ds-base-devel / 389-ds-base-libs (VZLSA-2017-0893)	Nessus	Virtuozzo Local Security Checks	medium
99953	EulerOS 2.0 SP2 : 389-ds-base (EulerOS-SA-2017-1087)	Nessus	Huawei Local Security Checks	medium
99712	Amazon Linux AMI : 389-ds-base (ALAS-2017-824)	Nessus	Amazon Linux Local Security Checks	medium
99382	CentOS 7 : 389-ds-base (CESA-2017:0920)	Nessus	CentOS Local Security Checks	medium
99349	Scientific Linux Security Update : 389-ds-base on SL7.x x86_64 (20170412)	Nessus	Scientific Linux Local Security Checks	medium
99343	RHEL 7 : 389-ds-base (RHSA-2017:0920)	Nessus	Red Hat Local Security Checks	medium
99339	RHEL 6 : 389-ds-base (RHSA-2017:0893)	Nessus	Red Hat Local Security Checks	medium
99332	Oracle Linux 7 : 389-ds-base (ELSA-2017-0920)	Nessus	Oracle Linux Local Security Checks	medium
99317	CentOS 6 : 389-ds-base (CESA-2017:0893)	Nessus	CentOS Local Security Checks	medium
99300	Scientific Linux Security Update : 389-ds-base on SL6.x i386/x86_64 (20170411)	Nessus	Scientific Linux Local Security Checks	medium
99299	Oracle Linux 6 : 389-ds-base (ELSA-2017-0893)	Nessus	Oracle Linux Local Security Checks	medium

Detections

Analytics

CVE-2017-2668

medium

Tenable Plugins

medium

critical

medium

medium

medium

medium

medium

medium

medium

medium

medium

medium

medium

medium