Cisco IOS/IOS XE DHCP Server DHCP Packet input validation

CVSS Meta Temp Score
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CTI Interest Score
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6.7$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic was found in Cisco IOS and IOS XE. This vulnerability affects unknown code of the component DHCP Server. Executing a manipulation as part of DHCP Packet can lead to input validation. This vulnerability is handled as CVE-2013-5475. Additionally, an exploit exists. Upgrading the affected component is advised.

Detailsinfo

A vulnerability classified as critical was found in Cisco IOS and IOS XE (Router Operating System). This vulnerability affects an unknown function of the component DHCP Server. The manipulation as part of a DHCP 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 12.2 through 12.4 and 15.0 through 15.3, and IOS XE 2.1 through 3.9, allows remote attackers to cause a denial of service (device reload) via crafted DHCP packets that are processed locally by a (1) server or (2) relay agent, aka Bug ID CSCug31561.

The weakness was released 09/25/2013 as cisco-sa-20130925-dhcp as confirmed advisory (Website). The advisory is available at tools.cisco.com. The public release was coordinated with the vendor. This vulnerability was named CVE-2013-5475 since 08/22/2013. The attack can be initiated remotely. No form of authentication is required 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 70316 (Cisco IOS Software DHCP Denial of Service Vulnerability (cisco-sa-20130925-dhcp)), 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 43324 (Cisco IOS Software DHCP Denial of Service Vulnerability (cisco-sa-20130925-dhcp)).

Upgrading eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (70316), OSVDB (97734†) and Vulnerability Center (SBV-41623†). Additional details are provided at tools.cisco.com. Entries connected to this vulnerability are available at VDB-10488 and VDB-10487. Once again VulDB remains the best source for vulnerability data.

Affected

  • Cisco IOS up to 15.3
  • Cisco IOS XE up to 3.7S.1

Productinfo

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

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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NVD Base Score: 🔍

Exploitinginfo

Class: Input validation
CWE: CWE-20
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: 70316
Nessus Name: Cisco IOS Software DHCP Denial of Service Vulnerability (cisco-sa-20130925-dhcp)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

08/22/2013 🔍
09/25/2013 +34 days 🔍
09/25/2013 +0 days 🔍
09/26/2013 +1 days 🔍
09/27/2013 +1 days 🔍
09/29/2013 +2 days 🔍
10/07/2013 +8 days 🔍
05/25/2021 +2787 days 🔍

Sourcesinfo

Vendor: cisco.com

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

CVE: CVE-2013-5475 (🔍)
GCVE (CVE): GCVE-0-2013-5475
GCVE (VulDB): GCVE-100-10486

IAVM: 🔍

OSVDB: 97734
Vulnerability Center: 41623 - [cisco-sa-20130925-dhcp] Cisco IOS 12.2 - 15.3, IOS XE 2.1-3.9 Remote DoS via Crafted DHCP - CVE-2013-5475, High

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

Entryinfo

Created: 09/26/2013 15:49
Updated: 05/25/2021 22:28
Changes: 09/26/2013 15:49 (48), 05/12/2017 08:34 (27), 05/25/2021 22:28 (3)
Complete: 🔍
Committer:
Cache ID: 216:826:103

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