VDB-105416 · CVE-2017-6775 · BID 100381

Cisco StarOS on ASR 5000 CLI Environment Variable access control

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.3$0-$5k0.00

Summaryinfo

A vulnerability labeled as critical has been found in Cisco StarOS on ASR 5000. This vulnerability affects unknown code of the component CLI. Such manipulation as part of Environment Variable leads to access control. This vulnerability is documented as CVE-2017-6775. The attack needs to be performed locally. There is not any exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in Cisco StarOS on ASR 5000 (Router Operating System) (the affected version unknown). It has been rated as critical. Affected by this issue is an unknown part of the component CLI. The manipulation as part of a Environment Variable leads to a access control vulnerability. Using CWE to declare the problem leads to CWE-264. Impacted is confidentiality, integrity, and availability. CVE summarizes:

A vulnerability in the CLI of Cisco ASR 5000 Series Aggregated Services Routers running the Cisco StarOS operating system could allow an authenticated, local attacker to elevate their privileges to admin-level privileges. The vulnerability is due to incorrect permissions that are given to a set of users. An attacker could exploit this vulnerability by logging in to the shell of an affected device and elevating their privileges by modifying environment variables. An exploit could allow the attacker to gain admin-level privileges and take control of the affected device. Cisco Bug IDs: CSCvd47741. Known Affected Releases: 21.0.v0.65839.

The bug was discovered 08/16/2017. The weakness was released 08/17/2017 with Cisco as cisco-sa-20170816-staros3 as confirmed advisory (Website). The advisory is shared for download at tools.cisco.com. This vulnerability is handled as CVE-2017-6775 since 03/09/2017. The attack needs to be approached locally. A simple authentication is necessary for exploitation. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1068.

The vulnerability was handled as a non-public zero-day exploit for at least 1 days. During that time the estimated underground price was around $5k-$25k.

Upgrading eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at SecurityFocus (BID 100381†). Entries connected to this vulnerability are available at VDB-105415 and VDB-105414. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.5
VulDB Meta Temp Score: 5.4

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.7
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Access control
CWE: CWE-264
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

03/09/2017 🔍
08/16/2017 +160 days 🔍
08/16/2017 +0 days 🔍
08/17/2017 +1 days 🔍
08/17/2017 +0 days 🔍
08/18/2017 +1 days 🔍
01/09/2021 +1240 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: cisco-sa-20170816-staros3
Researcher: Cisco
Organization: Cisco
Status: Confirmed

CVE: CVE-2017-6775 (🔍)
GCVE (CVE): GCVE-0-2017-6775
GCVE (VulDB): GCVE-100-105416
SecurityFocus: 100381 - Cisco StarOS for ASR 5000 Series Routers CVE-2017-6775 Local Privilege Escalation Vulnerability
SecurityTracker: 1039183

See also: 🔍

Entryinfo

Created: 08/18/2017 08:45
Updated: 01/09/2021 15:15
Changes: 08/18/2017 08:45 (64), 11/07/2019 17:53 (4), 01/09/2021 15:11 (2), 01/09/2021 15:15 (1)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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