Cisco IOS up to 15.2 VRF/NAT Features race condition

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6.7$0-$5k0.00

Summaryinfo

A vulnerability has been found in Cisco IOS up to 15.2 and classified as problematic. Impacted is an unknown function of the component VRF/NAT Features. The manipulation leads to race condition. This vulnerability is listed as CVE-2013-1142. In addition, an exploit is available. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in Cisco IOS up to 15.2 (Router Operating System) and classified as critical. This issue affects an unknown part of the component VRF/NAT Features. The manipulation with an unknown input leads to a race condition vulnerability. Using CWE to declare the problem leads to CWE-362. The product contains a code sequence that can run concurrently with other code, and the code sequence requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence that is operating concurrently. Impacted is availability. The summary by CVE is:

Race condition in the VRF-aware NAT feature in Cisco IOS 12.2 through 12.4 and 15.0 through 15.2 allows remote attackers to cause a denial of service (memory consumption) via IPv4 packets, aka Bug IDs CSCtg47129 and CSCtz96745.

The weakness was presented 03/27/2013 with Cisco as File 120990/Cis as confirmed advisory (Packetstorm). It is possible to read the advisory at packetstormsecurity.com. The public release was coordinated in cooperation with Cisco. The identification of this vulnerability is CVE-2013-1142 since 01/11/2013. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details are unknown but a private exploit is available.

It is declared as proof-of-concept. The vulnerability scanner Nessus provides a plugin with the ID 65888 (Cisco IOS Software Network Address Translation Vulnerability (cisco-sa-20130327-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 43268 (Cisco IOS Software Network Address Translation Vulnerability (cisco-sa-20130327-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 (65888), SecurityFocus (BID 58745†), OSVDB (91756†), Secunia (SA52778†) and SecurityTracker (ID 1028349†). See VDB-8127, VDB-8126, VDB-8125 and VDB-8124 for similar entries. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
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CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 6.7

VulDB Base Score: 7.5
VulDB Temp Score: 6.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

Class: Race condition
CWE: CWE-362
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Private
Status: Proof-of-Concept

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 65888
Nessus Name: Cisco IOS Software Network Address Translation Vulnerability (cisco-sa-20130327-nat)
Nessus File: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
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Timelineinfo

01/11/2013 🔍
03/27/2013 +75 days 🔍
03/27/2013 +0 days 🔍
03/27/2013 +0 days 🔍
03/27/2013 +0 days 🔍
03/27/2013 +0 days 🔍
03/28/2013 +1 days 🔍
03/28/2013 +0 days 🔍
03/28/2013 +0 days 🔍
04/02/2013 +5 days 🔍
04/10/2013 +8 days 🔍
04/26/2017 +1477 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: File 120990/Cis
Organization: Cisco
Status: Confirmed
Confirmation: 🔍
Coordinated: 🔍

CVE: CVE-2013-1142 (🔍)
GCVE (CVE): GCVE-0-2013-1142
GCVE (VulDB): GCVE-100-8123

IAVM: 🔍

SecurityFocus: 58745 - Cisco IOS Network Address Translation CVE-2013-1142 Remote Denial of Service Vulnerability
Secunia: 52778 - Cisco IOS Network Address Translation SIP Packet Handling Denial of Service Vulnerability, Less Critical
OSVDB: 91756
SecurityTracker: 1028349 - Cisco IOS VRF Network Address Translation Flaw Lets Remote Users Deny Service
Vulnerability Center: 38940 - [cisco-sa-20130327-nat] Cisco IOS VRF-Aware NAT Remote DoS Vulnerability, High

scip Labs: https://www.scip.ch/en/?labs.20161013
See also: 🔍

Entryinfo

Created: 04/02/2013 15:58
Updated: 04/26/2017 17:56
Changes: 04/02/2013 15:58 (83), 04/26/2017 17:56 (6)
Complete: 🔍
Committer:
Cache ID: 216::103

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