Cisco IOS up to 12.0.2 Syslog UDP Packet denial of service
CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
---|---|---|
5.1 | $0-$5k | 0.00 |
A vulnerability, which was classified as problematic, was found in Cisco IOS up to 12.0.2 (Router Operating System). Affected is an unknown function of the component Syslog. The manipulation as part of a UDP Packet leads to a denial of service vulnerability. CWE is classifying the issue as CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. This is going to have an impact on availability. CVE summarizes:
Cisco IOS 12.0 and other versions can be crashed by malicious UDP packets to the syslog port.
The weakness was presented 01/11/1999 by Olaf Selke as cisco-sa-19990111 as confirmed advisory (Website). This vulnerability is traded as CVE-1999-0063. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are neither technical details nor an exploit publicly available.
The vulnerability scanner Nessus provides a plugin with the ID 48946 (Cisco IOS Syslog Crash - Cisco Systems), which helps to determine the existence of the flaw in a target environment. It is assigned to the family CISCO and running in the context l.
Upgrading eliminates this vulnerability. It is possible to mitigate the problem by applying the configuration setting Disable Syslog
.It is possible to mitigate the weakness by firewalling udp/514 (syslog). The best possible mitigation is suggested to be upgrading to the latest version.
The vulnerability is also documented in the databases at X-Force (1558) and Tenable (48946).
Product
Type
Vendor
Name
Version
License
Support
- end of life (old version)
CPE 2.3
CPE 2.2
CVSSv4
VulDB CVSS-B Score: 🔍VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 5.3VulDB Meta Temp Score: 5.1
VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍
CVSSv2
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unlock | unlock | unlock | unlock | unlock | unlock |
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unlock | unlock | unlock | unlock | unlock | unlock |
VulDB Base Score: 🔍
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VulDB Reliability: 🔍
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Exploiting
Class: Denial of serviceCWE: CWE-404
ATT&CK: T1499
Local: No
Remote: Yes
Availability: 🔍
Status: Not defined
EPSS Score: 🔍
EPSS Percentile: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍
0-Day | unlock | unlock | unlock | unlock |
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Today | unlock | unlock | unlock | unlock |
Nessus ID: 48946
Nessus Name: Cisco IOS Syslog Crash - Cisco Systems
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
Nessus Port: 🔍
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: UpgradeStatus: 🔍
0-Day Time: 🔍
Config: Disable Syslog
Firewalling: 🔍
McAfee IPS: 🔍
McAfee IPS Version: 🔍
ISS Proventia IPS: 🔍
Timeline
01/11/1999 🔍01/11/1999 🔍
01/11/1999 🔍
01/11/1999 🔍
12/30/2002 🔍
09/01/2010 🔍
06/20/2014 🔍
05/07/2019 🔍
Sources
Vendor: cisco.comResearcher: Olaf Selke
Status: Confirmed
CVE: CVE-1999-0063 (🔍)
OVAL: 🔍
X-Force: 1558
Vulnerability Center: 571 - [cisco-sa-19990111-ios-syslog] DoS in Cisco IOS via Malicious UDP Packets to Syslog Port, Medium
SecurityFocus: 675 - Cisco IOS Syslog Crash
Entry
Created: 06/20/2014 12:52Updated: 05/07/2019 14:33
Changes: 06/20/2014 12:52 (72), 05/07/2019 14:33 (3)
Complete: 🔍
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