VDB-124885 · CVE-2018-15373 · BID 105413

Cisco IOS/IOS XE CDP Packet resource management

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.6$0-$5k0.00

Summaryinfo

A vulnerability was found in Cisco IOS and IOS XE. It has been classified as problematic. This affects an unknown part of the component CDP. This manipulation as part of Packet causes resource management. This vulnerability is registered as CVE-2018-15373. The attack requires access to the local network. No exploit is available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability classified as problematic was found in Cisco IOS and IOS XE (Router Operating System) (unknown version). Affected by this vulnerability is an unknown code block of the component CDP. The manipulation as part of a Packet leads to a resource management vulnerability. The CWE definition for the vulnerability is CWE-399. As an impact it is known to affect availability. The summary by CVE is:

A vulnerability in the implementation of Cisco Discovery Protocol functionality in Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, adjacent attacker to exhaust memory on an affected device, resulting in a denial of service (DoS) condition. The vulnerability is due to improper memory handling by the affected software when the software processes high rates of Cisco Discovery Protocol packets that are sent to a device. An attacker could exploit this vulnerability by sending a high rate of Cisco Discovery Protocol packets to an affected device. A successful exploit could allow the attacker to exhaust memory on the affected device, resulting in a DoS condition.

The bug was discovered 09/26/2018. The weakness was published 10/05/2018 as cisco-sa-20180926-cdp-dos as confirmed advisory (Website). The advisory is shared at tools.cisco.com. This vulnerability is known as CVE-2018-15373 since 08/17/2018. Access to the local network is required for this attack. The exploitation doesn't need any form of authentication. Neither technical details nor an exploit are publicly available.

The vulnerability was handled as a non-public zero-day exploit for at least 9 days. During that time the estimated underground price was around $5k-$25k. The commercial vulnerability scanner Qualys is able to test this issue with plugin 316334 (Cisco IOS and IOS XE Software Cisco Discovery Protocol Denial of Service Vulnerability(cisco-sa-20180926-cdp-dos)).

Upgrading eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at SecurityFocus (BID 105413†). Similar entries are available at VDB-124889 and VDB-124881. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

Vendor

Name

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.8
VulDB Meta Temp Score: 5.7

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.4
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Resource management
CWE: CWE-399 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

08/17/2018 🔍
09/26/2018 +40 days 🔍
09/26/2018 +0 days 🔍
10/05/2018 +8 days 🔍
10/05/2018 +0 days 🔍
10/06/2018 +1 days 🔍
03/30/2020 +541 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: cisco-sa-20180926-cdp-dos
Status: Confirmed

CVE: CVE-2018-15373 (🔍)
GCVE (CVE): GCVE-0-2018-15373
GCVE (VulDB): GCVE-100-124885

OVAL: 🔍

SecurityFocus: 105413 - Cisco IOS and IOS XE Software CVE-2018-15373 Denial of Service Vulnerability

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

Entryinfo

Created: 10/06/2018 11:04
Updated: 03/30/2020 14:45
Changes: 10/06/2018 11:04 (67), 03/30/2020 14:45 (3)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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