cisco-sa-20190501-asa-ftds-ldapdos: Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software Lightweight Directory Access Protocol Denial of Service Vulnerability
First published: Wed May 01 2019(Updated: )
A vulnerability in the implementation of the Lightweight Directory Access Protocol (LDAP) feature in Cisco Adaptive Security Appliance (ASA) Software and Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause an affected device to reload, resulting in a denial of service (DoS) condition. The vulnerabilities are due to the improper parsing of LDAP packets sent to an affected device. An attacker could exploit these vulnerabilities by sending a crafted LDAP packet, using Basic Encoding Rules (BER), to be processed by an affected device. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a DoS condition. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability. This advisory is available at the following link: https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190501-asa-ftds-ldapdos
Credit: This vulnerability was found during the resolution a Cisco TAC support case
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Cisco ASA Software | =9.10<9.10.1.17>=9.7=9.8<=9.9<9.9.2.50=9.6<9.6.4.25 | 9.10.1.17 9.9.2.50 9.6.4.25 |
| Cisco FTD Software | =6.2.3<6.2.3.12=6.2.2<6.2.3.12=6.2.1<6.2.3.12 | 6.2.3.12 6.2.3.12 6.2.3.12 |
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Reference Links
Frequently Asked Questions
What is the severity of cisco-sa-20190501-asa-ftds-ldapdos?
The severity of cisco-sa-20190501-asa-ftds-ldapdos is categorized as high due to the potential for remote attackers to cause device reloads.
How do I fix cisco-sa-20190501-asa-ftds-ldapdos?
To fix cisco-sa-20190501-asa-ftds-ldapdos, upgrade to the recommended versions of Cisco ASA Software or Firepower Threat Defense Software as specified in the advisory.
What products are affected by cisco-sa-20190501-asa-ftds-ldapdos?
The affected products for cisco-sa-20190501-asa-ftds-ldapdos include specific versions of Cisco ASA Software and Firepower Threat Defense Software.
Can cisco-sa-20190501-asa-ftds-ldapdos be exploited remotely?
Yes, cisco-sa-20190501-asa-ftds-ldapdos can be exploited by unauthenticated remote attackers.
What symptoms indicate an exploitation of cisco-sa-20190501-asa-ftds-ldapdos?
Symptoms of exploitation of cisco-sa-20190501-asa-ftds-ldapdos may include unexpected device reloads or crashes.
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