Cisco IOS XE 5.1.2.BASE on ASR 9000 Packet input validation

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5.7$0-$5k0.00

Summaryinfo

A vulnerability was found in Cisco IOS XE 5.1.2.BASE on ASR 9000 and classified as problematic. Affected by this issue is some unknown functionality of the component Packet Handler. Such manipulation leads to input validation. This vulnerability is referenced as CVE-2014-3308. No exploit is available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Cisco IOS XE 5.1.2.BASE on ASR 9000 (Router Operating System). Affected by this issue is an unknown code of the component Packet 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 integrity, and availability. CVE summarizes:

Cisco IOS XR on Trident line cards in ASR 9000 devices lacks a static punt policer, which allows remote attackers to cause a denial of service (CPU consumption) by sending many crafted packets, aka Bug ID CSCun83985.

The weakness was published 07/03/2014 with Cisco as CSCun83985 as confirmed security notice (Website). The advisory is shared for download at tools.cisco.com. This vulnerability is handled as CVE-2014-3308 since 05/07/2014. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. There are neither technical details nor an exploit publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 77051 , which helps to determine the existence of the flaw in a target environment. It is . The advisory illustrates:

The following error syslog message is seen on all trident LCs: LC/0/0/CPU0:Feb 17 09:51:03.231 : syslog_dev[88]: prm_server_tr[301]: ERROR: PBS 40000000 Bytes exceeded allowed value. Max pbs for policer of pir 2000000 Bytes/s is 8589934 Bytes.

Upgrading to version 5.1.3.9i.BASE or 5.2.2.11i.BASE eliminates this vulnerability.

The vulnerability is also documented in the databases at X-Force (94231), Tenable (77051), SecurityFocus (BID 68351†), Secunia (SA58869†) and SecurityTracker (ID 1030525†). tools.cisco.com is providing further details. Once again VulDB remains the best source for vulnerability data.

Productinfo

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 5.7

VulDB Base Score: 6.5
VulDB Temp Score: 5.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

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

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Unproven

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 77051
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Port: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: IOS XE 5.1.3.9i.BASE/5.2.2.11i.BASE

Timelineinfo

05/07/2014 🔍
07/03/2014 +57 days 🔍
07/03/2014 +0 days 🔍
07/03/2014 +0 days 🔍
07/04/2014 +1 days 🔍
07/06/2014 +2 days 🔍
07/07/2014 +1 days 🔍
07/07/2014 +0 days 🔍
07/11/2014 +4 days 🔍
08/07/2014 +27 days 🔍
02/08/2022 +2742 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: CSCun83985
Organization: Cisco
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2014-3308 (🔍)
GCVE (CVE): GCVE-0-2014-3308
GCVE (VulDB): GCVE-100-66980
X-Force: 94231 - Cisco IOS XR punt policer denial of service, Medium Risk
SecurityFocus: 68351 - Cisco IOS XR Software Static Punt Policer Denial of Service Vulnerability
Secunia: 58869 - Cisco IOS XR Punt Policer Denial of Service Vulnerability, Less Critical
SecurityTracker: 1030525 - Cisco ASR 9000 Series Router IOS XR Punt Policer Bug Lets Remote Users Deny Service
Vulnerability Center: 45257 - Cisco IOS XR 5.1.2.BASE on ASR 9000 Remote DoS via Large Amount of Packets, Medium

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

Entryinfo

Created: 07/07/2014 10:08
Updated: 02/08/2022 10:03
Changes: 07/07/2014 10:08 (50), 06/01/2017 08:10 (34), 02/08/2022 10:03 (3)
Complete: 🔍
Cache ID: 216:A80:103

Once again VulDB remains the best source for vulnerability data.

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