CVE-1999-0063: Medium severity Cisco IOS vulnerability

Published Jan 11, 1999
·
Updated

Cisco IOS 12.0 and other versions can be crashed by malicious UDP packets to the syslog port.

Affected Software

12 affected components
Cisco IOS=12.0\(1\)w
Cisco IOS=12.0\(1\)xb
Cisco IOS=12.0\(2\)xd
Cisco IOS=12.0t
Cisco IOS=12.0\(1\)xe
Cisco IOS=11.3db
Cisco IOS=12.0db
Cisco IOS=11.3aa
Cisco IOS=12.0\(1\)xa3
Cisco IOS=12.0\(2\)xc
Cisco IOS=12.0s
Cisco IOS=12.0

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Configuration

    Disable or stop listening on the syslog UDP port (UDP/514) on affected Cisco IOS devices to prevent crashes caused by malicious UDP packets to the syslog port.

    Cisco IOS (syslog/remote logging) syslog UDP reception = disabled
  2. Compensating control

    Block or filter UDP traffic to the syslog port (UDP/514) from untrusted networks using perimeter firewalls or device ACLs to prevent malicious packets reaching Cisco IOS syslog listeners.

Event History

Jan 11, 1999
CVE Published
05:00 AM
Data Sourced
via NVD·05:00 AM
DescriptionSeverityAffected Software
Sep 29, 1999
CVE Published
via MITRE·08:00 AM
Data Sourced
via MITRE·08:00 AM
Description

Frequently Asked Questions

1

What is the severity of CVE-1999-0063?

CVE-1999-0063 is considered a critical vulnerability that can crash affected Cisco IOS systems.

2

How do I fix CVE-1999-0063?

To fix CVE-1999-0063, update your Cisco IOS to a version that addresses this vulnerability.

3

What systems are affected by CVE-1999-0063?

CVE-1999-0063 affects various versions of Cisco IOS including 12.0, 11.3aa, and 11.3db.

4

What type of attack exploits CVE-1999-0063?

CVE-1999-0063 can be exploited through malicious UDP packets sent to the syslog port.

5

Is there a workaround for CVE-1999-0063?

To mitigate CVE-1999-0063, consider disabling the syslog service or implementing access control measures.

Contact

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Fortitude Valley,
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