PADL Software nss_ldap DNS Buffer Overflow Vulnerability

BID:6129

Info

PADL Software nss_ldap DNS Buffer Overflow Vulnerability

Bugtraq ID: 6129
Class: Boundary Condition Error
CVE: CVE-2002-0825
Remote: Yes
Local: No
Published: Aug 30 2002 12:00AM
Updated: Jul 11 2009 06:07PM
Credit: Announced by PADL Software.
Vulnerable: Padl Software nss_ldap Build 85
+ Redhat Linux 6.1 sparc
 + Redhat Linux 6.1 i386
 + Redhat Linux 6.1 i386
 + Redhat Linux 6.1 alpha
 + Redhat Linux 6.1 alpha
 Padl Software nss_ldap Build 194
+ Mandriva Linux Mandrake 9.0
Padl Software nss_ldap Build 192
Padl Software nss_ldap Build 191
Padl Software nss_ldap Build 190
Padl Software nss_ldap Build 189
Padl Software nss_ldap Build 188
Padl Software nss_ldap Build 187
Padl Software nss_ldap Build 186
Padl Software nss_ldap Build 185.3
Padl Software nss_ldap Build 185.2
Padl Software nss_ldap Build 185.1
Padl Software nss_ldap Build 185
Padl Software nss_ldap Build 184
Padl Software nss_ldap Build 183
Padl Software nss_ldap Build 181
Padl Software nss_ldap Build 180
Padl Software nss_ldap Build 173
+ Mandriva Linux Mandrake 8.2 ppc
 + Mandriva Linux Mandrake 8.2
Padl Software nss_ldap Build 172
+ Caldera OpenLinux Server 3.1.1
+ Caldera OpenLinux Server 3.1
+ Caldera OpenLinux Workstation 3.1.1
+ Caldera OpenLinux Workstation 3.1
+ Mandriva Linux Mandrake 8.1 ia64
 + Mandriva Linux Mandrake 8.1
Padl Software nss_ldap Build 122
+ MandrakeSoft Single Network Firewall 7.2
+ Mandriva Linux Mandrake 7.2
+ Mandriva Linux Mandrake 7.2
+ Mandriva Linux Mandrake 7.1
+ Mandriva Linux Mandrake 7.1
+ Mandriva Linux Mandrake 7.0
+ Mandriva Linux Mandrake 7.0
Padl Software nss_ldap Build 121
Padl Software nss_ldap Build 113
+ Redhat Linux 7.0
Padl Software nss_ldap Build 107
+ Mandriva Linux Mandrake 8.0 ppc
 + Mandriva Linux Mandrake 8.0
Padl Software nss_ldap Build 105
+ Redhat Linux 6.2 sparc
 + Redhat Linux 6.2 i386
 + Redhat Linux 6.2 i386
 + Redhat Linux 6.2 alpha
 + Redhat Linux 6.2 alpha
Not Vulnerable: Padl Software nss_ldap Build 202
+ MandrakeSoft Single Network Firewall 7.2
+ Mandriva Linux Mandrake 9.0
+ Mandriva Linux Mandrake 8.2 ppc
 + Mandriva Linux Mandrake 8.2
+ Mandriva Linux Mandrake 8.1 ia64
 + Mandriva Linux Mandrake 8.1
+ Mandriva Linux Mandrake 8.0 ppc
 + Mandriva Linux Mandrake 8.0
+ Mandriva Linux Mandrake 7.2
Padl Software nss_ldap Build 199
Padl Software nss_ldap Build 198

Discussion

PADL Software nss_ldap DNS Buffer Overflow Vulnerability

A buffer overflow condition has been reported in nss_ldap. When nss_ldap is configured without a value for the "host" parameter, it will attempt to configure itself using SRV DNS records. There is no bounds checking on data returned from the DNS server before it is copied into internal memory buffers. If it is of excessive length, a buffer overrun condition will occur. Operators of malicious DNS servers may exploit this condition to execute arbitrary code on target hosts. It may also be possible for attackers who do not control the DNS server to spoof malicious responses.

Exploit / POC

PADL Software nss_ldap DNS Buffer Overflow Vulnerability

Currently we are not aware of any exploits for this issue. If you feel we are in error or are aware of more recent information, please mail us at: [email protected] <mailto:[email protected]>.

Solution / Fix

PADL Software nss_ldap DNS Buffer Overflow Vulnerability

Solution:
Mandrake has released an advisory (MDKSA-2002:075) containing upgrades which address this issue. Mandrake users should see the attached advisory for details on obtaining fixes.

This issue is present in versions of nss_ldap prior to 198. Users are advised to upgrade to a more recent version.


Padl Software nss_ldap Build 107

Padl Software nss_ldap Build 122

Padl Software nss_ldap Build 172

Padl Software nss_ldap Build 194

Padl Software nss_ldap Build 173

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