Cisco ASR 5000/ASR 5500 18.0.0.57828/19.0.M0.61045 TACACS Packet input validation

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
5.3$5k-$25k0.00

A vulnerability has been found in Cisco ASR 5000 and ASR 5500 18.0.0.57828/19.0.M0.61045 (Router Operating System) and classified as problematic. This vulnerability affects an unknown function of the component TACACS Packet Handler. The manipulation with an unknown input 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 ASR 5000 and 5500 devices with software 18.0.0.57828 and 19.0.M0.61045 allow remote attackers to cause a denial of service (vpnmgr process restart) via a crafted header in a TACACS packet, aka Bug ID CSCuw01984.

The weakness was shared 10/16/2015 as CSCuw01984 as confirmed advisory (Website). The advisory is shared for download at tools.cisco.com. This vulnerability was named CVE-2015-6334 since 08/17/2015. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $5k-$25k (estimation calculated on 06/22/2022).

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

The entry VDB-76412 is related to this item.

Productinfo

Type

Vendor

Name

Version

License

Support

  • end of life (old version)

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.3

VulDB Base Score: 5.3
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
unlockunlockunlockunlockunlockunlock
unlockunlockunlockunlockunlockunlock
unlockunlockunlockunlockunlockunlock

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

NVD Base Score: 🔍

Exploitinginfo

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

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Dayunlockunlockunlockunlock
Todayunlockunlockunlockunlock

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

Timelineinfo

08/17/2015 🔍
10/15/2015 +59 days 🔍
10/16/2015 +1 days 🔍
10/16/2015 +0 days 🔍
06/22/2022 +2440 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: CSCuw01984
Status: Confirmed

CVE: CVE-2015-6334 (🔍)
SecurityTracker: 1033792

See also: 🔍

Entryinfo

Created: 10/16/2015 10:35 AM
Updated: 06/22/2022 01:32 AM
Changes: 10/16/2015 10:35 AM (49), 02/06/2018 08:42 AM (1), 06/22/2022 01:32 AM (3)
Complete: 🔍
Cache ID: 3:BF4:40

Discussion

No comments yet. Languages: en.

Please log in to comment.

Want to stay up to date on a daily basis?

Enable the mail alert feature now!