Cisco IOS 15.5(3)M on ISR800/ISR819/ISR829 SSH Service TCP Packet resource management

CVSS Meta Temp Score
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CTI Interest Score
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7.5$5k-$25k0.00

Summaryinfo

A vulnerability was found in Cisco IOS 15.5(3)M on ISR800/ISR819/ISR829. It has been classified as problematic. Impacted is an unknown function of the component SSH Service. This manipulation as part of TCP Packet causes resource management. This vulnerability appears as CVE-2015-6289. The attack may be initiated remotely. There is no available exploit.

Detailsinfo

A vulnerability classified as critical was found in Cisco IOS 15.5(3)M on ISR800/ISR819/ISR829 (Router Operating System). Affected by this vulnerability is an unknown code block of the component SSH Service. The manipulation as part of a TCP 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:

Cisco IOS 15.5(3)M on Integrated Services Router (ISR) 800, 819, and 829 devices allows remote attackers to cause a denial of service (memory consumption) via crafted TCP packets on the SSH port, aka Bug ID CSCuu13476.

The weakness was presented 06/23/2016 with Cisco as CSCuu13476 as confirmed advisory (Website). The advisory is shared at tools.cisco.com. This vulnerability is known as CVE-2015-6289 since 08/17/2015. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 11/18/2024).

The commercial vulnerability scanner Qualys is able to test this issue with plugin 316013 (Cisco IOS OpenSSH TCP Denial of Service Vulnerability (cisco-sa-20160620-isr)).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at SecurityFocus (BID 91322†). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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: 7.5

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

NVD Base Score: 7.5
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: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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OpenVAS ID: 103403
OpenVAS Name: Cisco IOS Software TCP Denial of Service Vulnerability
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

Timelineinfo

08/17/2015 🔍
06/20/2016 +308 days 🔍
06/22/2016 +2 days 🔍
06/23/2016 +1 days 🔍
06/23/2016 +0 days 🔍
11/18/2024 +3070 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: CSCuu13476
Organization: Cisco
Status: Confirmed

CVE: CVE-2015-6289 (🔍)
GCVE (CVE): GCVE-0-2015-6289
GCVE (VulDB): GCVE-100-88093

OVAL: 🔍

SecurityFocus: 91322 - Cisco IOS and IOS XE Software CVE-2015-6289 Denial of Service Vulnerability
SecurityTracker: 1036141

Entryinfo

Created: 06/23/2016 11:39
Updated: 11/18/2024 14:31
Changes: 06/23/2016 11:39 (60), 02/09/2019 10:53 (11), 08/24/2022 14:21 (2), 11/18/2024 14:31 (16)
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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