VDB-11062 · CVE-2013-5543 · BID 63436

Cisco IOS XE 3.4.1S/3.5.0S Zone Based Firewall ICMP Error Packet input validation

CVSS Meta Temp Score
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CTI Interest Score
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7.2$0-$5k0.00

A vulnerability classified as critical was found in Cisco IOS XE 3.4.1S/3.5.0S (Router Operating System). This vulnerability affects some unknown functionality of the component Zone Based Firewall. The manipulation as part of a ICMP Error Packet leads to a input validation vulnerability. The CWE definition for the vulnerability is CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. As an impact it is known to affect availability. CVE summarizes:

Cisco IOS XE 3.4 before 3.4.2S and 3.5 before 3.5.1S on 1000 ASR devices allows remote attackers to cause a denial of service (device reload) via malformed ICMP error packets associated with a (1) TCP or (2) UDP session that is under inspection by the Zone-Based Firewall (ZBFW) component, aka Bug ID CSCtt26470.

The weakness was disclosed 10/30/2013 as Multiple Vulnerabilities in Cisco IOS XE Software for 1000 Series Aggregation Services Routers as confirmed advisory (Website). The advisory is available at tools.cisco.com. The public release has been coordinated in cooperation with the vendor. This vulnerability was named CVE-2013-5543 since 08/22/2013. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. The technical details are unknown and an exploit is not available.

The vulnerability scanner Nessus provides a plugin with the ID 70784 (Multiple Vulnerabilities in Cisco IOS XE Software for 1000 Series Aggregation Services Routers (cisco-sa-20131030-asr1000)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family CISCO.

Upgrading to version 3.4.2S or 3.5.1S eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (70784). Additional details are provided at tools.cisco.com. The entries 11063, 11064 and 11065 are pretty similar.

Productinfo

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Version

License

Support

  • end of life (old version)

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
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CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 7.2

VulDB Base Score: 7.5
VulDB Temp Score: 7.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

Class: Input validation
CWE: CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

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Current Price Estimation: 🔍

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Nessus ID: 70784
Nessus Name: Multiple Vulnerabilities in Cisco IOS XE Software for 1000 Series Aggregation Services Routers (cisco-sa-20131030-asr1000)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Upgrade: IOS XE 3.4.2S/3.5.1S

Timelineinfo

08/22/2013 🔍
10/30/2013 +69 days 🔍
10/30/2013 +0 days 🔍
10/30/2013 +0 days 🔍
10/30/2013 +0 days 🔍
10/31/2013 +1 days 🔍
10/31/2013 +0 days 🔍
11/01/2013 +1 days 🔍
11/07/2013 +6 days 🔍
06/01/2021 +2763 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: Multiple Vulnerabilities in Cisco IOS XE Software for 1000 Series Aggregation Services Routers
Status: Confirmed
Coordinated: 🔍

CVE: CVE-2013-5543 (🔍)
IAVM: 🔍

SecurityTracker: 1029277 - Cisco IOS XE Multiple Bugs Let Remote Users Deny Service
Vulnerability Center: 42148 - [cisco-sa-20131030-asr1000] Cisco IOS XE Zone-Based Firewall (ZBFW) Remote DoS Vulnerability via ICMP (CVE-2013-5543), High
SecurityFocus: 63436
OSVDB: 99152

scip Labs: https://www.scip.ch/en/?labs.20150108
Misc.: 🔍
See also: 🔍

Entryinfo

Created: 11/01/2013 10:57
Updated: 06/01/2021 15:42
Changes: 11/01/2013 10:57 (50), 05/14/2017 10:07 (29), 06/01/2021 15:42 (3)
Complete: 🔍

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