Cisco Shell 12.2s Local Privilege Escalation

CVSS Meta Temp Score
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CTI Interest Score
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5.2$0-$5k0.00

Summaryinfo

A vulnerability was found in Cisco Shell 12.2s. It has been classified as problematic. Affected by this vulnerability is an unknown functionality. The manipulation leads to Local Privilege Escalation. This vulnerability is listed as CVE-2006-0486. There is no available exploit. To fix this issue, it is recommended to deploy a patch.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Cisco Shell 12.2s. This issue affects an unknown code block. The manipulation with an unknown input leads to a local privilege escalation vulnerability. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

Certain Cisco IOS releases in 12.2S based trains with maintenance release number 25 and later, 12.3T based trains, and 12.4 based trains reuse a Tcl Shell process across login sessions of different local users on the same terminal if the first user does not use tclquit before exiting, which may cause subsequent local users to execute unintended commands or bypass AAA command authorization checks, aka Bug ID CSCef77770.

The weakness was presented 01/31/2006 by Nicolas Fischbach (Website). It is possible to read the advisory at cisco.com. The identification of this vulnerability is CVE-2006-0486 since 01/31/2006. The exploitation is known to be easy. Attacking locally is a requirement. No form of authentication is needed for a successful exploitation. The technical details are unknown and an exploit is not publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 20808 (Cisco IOS TCLSH AAA Command Authorization Bypass (CSCeh73049)), 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 43107 (Cisco IOS TCLSH AAA Command Authorization Bypass Vulnerability (cisco-response-20060125-aaatcl)).

Applying a patch is able to eliminate this problem.

The vulnerability is also documented in the databases at X-Force (24308), Tenable (20808), SecurityFocus (BID 16383†), OSVDB (22723†) and Secunia (SA18613†). See VDB-2014 for similar entry. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.9
VulDB Meta Temp Score: 5.2

VulDB Base Score: 5.9
VulDB Temp Score: 5.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Local Privilege Escalation
CWE: Unknown
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Unproven

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 20808
Nessus Name: Cisco IOS TCLSH AAA Command Authorization Bypass (CSCeh73049)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Timelineinfo

01/25/2006 🔍
01/25/2006 +0 days 🔍
01/26/2006 +1 days 🔍
01/26/2006 +0 days 🔍
01/31/2006 +4 days 🔍
01/31/2006 +0 days 🔍
01/31/2006 +0 days 🔍
03/12/2015 +3327 days 🔍
07/07/2021 +2309 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: cisco.com
Researcher: Nicolas Fischbach
Status: Confirmed

CVE: CVE-2006-0486 (🔍)
GCVE (CVE): GCVE-0-2006-0486
GCVE (VulDB): GCVE-100-28523

OVAL: 🔍

X-Force: 24308 - Cisco IOS AAA TCL shell command authentication bypass
SecurityFocus: 16383 - Cisco IOS TCLSH AAA Command Authorization Bypass Vulnerability
Secunia: 18613 - Cisco IOS AAA Command Authentication Bypass Vulnerability, Less Critical
OSVDB: 22723 - Cisco IOS tclsh Login Process Re-Use
SecurityTracker: 1015543 - Cisco IOS AAA Command Authorization Feature May Let Remote Authenticated Users Gain Elevated Privileges

See also: 🔍

Entryinfo

Created: 03/12/2015 11:11
Updated: 07/07/2021 18:39
Changes: 03/12/2015 11:11 (62), 08/01/2017 09:16 (11), 07/07/2021 18:39 (3)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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