Fedora Directory Server LDAP BER memory leak denial of service
| fedora-ber-memory-leak-dos (24794) |  Medium Risk |
Description:
Fedora Directory Server is vulnerable to a denial of service attack caused by multiple memory leaks in the LDAP (Lightweight Directory Access Protocol) component. A remote attacker could exploit this vulnerability by sending multiple invalid BER packets to cause the consumption of all available memory resources, resulting in a denial of service.
*CVSS:
| Base Score: | 3.5 |
| Access Vector: | Remote |
| Access Complexity: | Low |
| Authentication: | Not Required |
| Confidentiality Impact: | None |
| Integrity Impact: | None |
| Availability Impact: | Partial |
| Temporal Score: | 2.6 |
| Exploitability: | Unproven |
| Remediation Level: | Official-Fix |
| Report Confidence: | Confirmed |
Consequences:
Denial of Service
Remedy:
Refer to the Fedora Web site for patch, upgrade, or suggested workaround information. See References.
References:
- Fedora Project Web site: Fedora Dirctory Server Project.
- GLEG Ltd. Web site: ProtoVer LDAP testsuite.
- Red Hat Bugzilla Bug 179135: CVE-2006-0451 memory leaks using ber_scanf when handling bad BER packets (CVE-2006-0453).
- BID-16677: Fedora Directory Server Multiple Remote Denial Of Service Vulnerabilities
- CVE-2006-0451: Multiple memory leaks in the LDAP component in Fedora Directory Server 1.0 allow remote attackers to cause a denial of service (memory consumption) via invalid BER packets that trigger an error, which might prevent memory from being freed if it was allocated during the ber_scanf call, as demonstrated using the ProtoVer LDAP test suite.
- RHSA-2006-0270: Red Hat Directory Server 7.1 security update
- SA18960: Fedora Directory Server LDAP Denial of Service Vulnerabilities
Platforms Affected:
- RedHat Directory Server 7.1
- RedHat Fedora Directory Server 1.0
Reported:
Feb 14, 2006
The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall the author/distributor (IBM Internet Security Systems X-Force) be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.
For corrections or additions please email xforce@iss.net
* According to the Forum of Incident Response and Security Teams (FIRST), the Common Vulnerability Scoring System (CVSS) is an "industry open standard designed to convey vulnerability severity and help to determine urgency and priority of response." IBM PROVIDES THE CVSS SCORES "AS IS" WITHOUT WARRANTY OF ANY KIND, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. CUSTOMERS ARE RESPONSIBLE FOR ASSESSING THE IMPACT OF ANY ACTUAL OR POTENTIAL SECURITY VULNERABILITY.
The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall IBM be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.