Cisco IOS 12.2/15.0/15.1/15.2/15.3 NAT input validation

CVSS Meta Temp Score
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5.7$0-$5k0.00

A vulnerability was found in Cisco IOS 12.2/15.0/15.1/15.2/15.3 (Router Operating System) and classified as problematic. Affected by this issue is an unknown code of the component NAT Handler. The manipulation with an unknown input leads to a input validation vulnerability. Using CWE to declare the problem leads to 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. Impacted is availability. CVE summarizes:

The DNS-over-TCP implementation in Cisco IOS 12.2 and 15.0 through 15.3, when NAT is used, allows remote attackers to cause a denial of service (device reload) via a crafted IPv4 DNS TCP stream, aka Bug ID CSCtn53730.

The weakness was published 09/25/2013 as cisco-sa-20130925-nat as confirmed advisory (Website). The advisory is available at tools.cisco.com. The public release has been coordinated with the vendor. This vulnerability is handled as CVE-2013-5479 since 08/22/2013. The exploitation is known to be difficult. The attack may be launched remotely. No form of authentication is required for exploitation. The technical details are unknown and an exploit is not available.

The vulnerability scanner Nessus provides a plugin with the ID 70320 (Cisco IOS Software Network Address Translation Vulnerabilities (cisco-sa-20130925-nat)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family CISCO. The commercial vulnerability scanner Qualys is able to test this issue with plugin 43323 (Cisco IOS Software Network Address Translation Vulnerabilities (cisco-sa-20130925-nat)).

Upgrading eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (70320), SecurityFocus (BID 62637†), OSVDB (97738†) and Vulnerability Center (SBV-41625†). Similar entries are available at VDB-10491 and VDB-10492. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
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CVSSv3info

VulDB Meta Base Score: 5.9
VulDB Meta Temp Score: 5.7

VulDB Base Score: 5.9
VulDB Temp Score: 5.7
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

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 70320
Nessus Name: Cisco IOS Software Network Address Translation Vulnerabilities (cisco-sa-20130925-nat)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
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Timelineinfo

08/22/2013 🔍
09/25/2013 +33 days 🔍
09/25/2013 +0 days 🔍
09/25/2013 +0 days 🔍
09/26/2013 +1 days 🔍
09/27/2013 +1 days 🔍
09/27/2013 +0 days 🔍
09/29/2013 +2 days 🔍
10/07/2013 +8 days 🔍
05/25/2021 +2787 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: cisco-sa-20130925-nat
Status: Confirmed
Coordinated: 🔍

CVE: CVE-2013-5479 (🔍)
GCVE (CVE): GCVE-0-2013-5479
GCVE (VulDB): GCVE-100-10490

IAVM: 🔍

SecurityFocus: 62637
OSVDB: 97738
Vulnerability Center: 41625 - [cisco-sa-20130925-nat] Cisco IOS Using NAT Remote DOS Via a Crafted TCP Stream - CVE-2013-5479, High

See also: 🔍

Entryinfo

Created: 09/26/2013 07:23 PM
Updated: 05/25/2021 11:32 PM
Changes: 09/26/2013 07:23 PM (46), 05/12/2017 08:36 AM (28), 05/25/2021 11:23 PM (4), 05/25/2021 11:32 PM (1)
Complete: 🔍
Committer:
Cache ID: 18:258:40

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