cisco-sa-20190306-nxosldap: Cisco FXOS and NX-OS Lightweight Directory Access Protocol Denial of Service Vulnerabilities
First published: Wed Mar 06 2019(Updated: )
Multiple vulnerabilities in the implementation of the Lightweight Directory Access Protocol (LDAP) feature in Cisco FXOS Software and Cisco NX-OS 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 by an affected device. An attacker could exploit these vulnerabilities by sending an LDAP packet crafted using Basic Encoding Rules (BER) to an affected device. The LDAP packet must have a source IP address of an LDAP server configured on the targeted device. A successful exploit could cause the affected device to reload, resulting in a DoS condition. Cisco has released software updates that address these vulnerabilities. There are no workarounds that address these vulnerabilities. This advisory is available at the following link: https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190306-nxosldap
Credit: These vulnerabilities were found during internal security testing.
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Cisco FXOS Software | =2.3<2.3.1.75=2.2<2.2.2.54=2.1<2.2.2.54=2.0<2.0.1.201=1.1<2.0.1.201 | 2.3.1.75 2.2.2.54 2.2.2.54 2.0.1.201 2.0.1.201 |
| Cisco NX-OS Software | =6.2<6.2(21)=5.2<6.2(21) | 6.2(21) 6.2(21) |
| Cisco NX-OS Software | ||
| Cisco NX-OS Software | =6.0(2)A8<6.0(2)A8(11)=Prior to 6.0(2)A8<6.0(2)A8(11) | 6.0(2)A8(11) 6.0(2)A8(11) |
| Cisco NX-OS Software | =6.2<6.2(20)=Prior to 6.2<6.2(20) | 6.2(20) 6.2(20) |
| Cisco NX-OS Software | =3.2<3.2(2b)=3.1<3.2(2b)=Prior to 3.1<3.2(2b) | 3.2(2b) 3.2(2b) 3.2(2b) |
Never miss a vulnerability like this again
Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.
Reference Links
Frequently Asked Questions
What is the vulnerability ID for this Cisco FXOS and NX-OS vulnerability?
The vulnerability ID for this Cisco FXOS and NX-OS vulnerability is cisco-sa-20190306-nxosldap.
What is the severity rating of the cisco-sa-20190306-nxosldap vulnerability?
The severity rating of the cisco-sa-20190306-nxosldap vulnerability is 8.6 (high).
Which software versions are affected by the cisco-sa-20190306-nxosldap vulnerability?
The Cisco FXOS Software versions 2.3.1.75, 2.2.2.54, 2.0.1.201 and Cisco NX-OS Software versions 6.2(21), 6.0(2)A8(11), 6.2(20) are affected by the cisco-sa-20190306-nxosldap vulnerability.
How can an attacker exploit the cisco-sa-20190306-nxosldap vulnerability?
An unauthenticated, remote attacker can exploit the cisco-sa-20190306-nxosldap vulnerability to cause an affected device to reload, resulting in a denial of service (DoS) condition.
Where can I find more information about the cisco-sa-20190306-nxosldap vulnerability?
You can find more information about the cisco-sa-20190306-nxosldap vulnerability at the following link: [cisco-sa-20190306-nxosldap](https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190306-nxosldap)
- agent/type
- agent/softwarecombine
- agent/first-publish-date
- agent/last-modified-date
- collector/cisco-advisory
- source/Cisco
- agent/software-canonical-lookup
- agent/title
- agent/weakness
- agent/severity
- agent/author
- agent/references
- agent/event
- agent/description
- agent/tags
- vendor/cisco
- canonical/cisco fxos software
- version/cisco fxos software/2.3
- version/cisco fxos software/2.2
- version/cisco fxos software/2.1
- version/cisco fxos software/2.0
- version/cisco fxos software/1.1
- canonical/cisco nx-os software
- version/cisco nx-os software/6.2
- version/cisco nx-os software/5.2
- version/cisco nx-os software/6.0(2)a8
- version/cisco nx-os software/prior to 6.0(2)a8
- version/cisco nx-os software/prior to 6.2
- version/cisco nx-os software/3.2
- version/cisco nx-os software/3.1
- version/cisco nx-os software/prior to 3.1