Cisco IOS up to 12.4ya Access Control List access control

CVSS Meta Temp Score
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CTI Interest Score
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5.3$5k-$25k0.00

Summaryinfo

A vulnerability was found in Cisco IOS up to 12.4ya. It has been rated as critical. This affects an unknown part of the component Access Control List. This manipulation causes access control. The identification of this vulnerability is CVE-2009-2862. There is no exploit available.

Detailsinfo

A vulnerability classified as critical was found in Cisco IOS up to 12.4ya (Router Operating System). Affected by this vulnerability is an unknown function of the component Access Control List. The manipulation with an unknown input leads to a access control vulnerability. The CWE definition for the vulnerability is CWE-264. As an impact it is known to affect confidentiality. The summary by CVE is:

The Object Groups for Access Control Lists (ACLs) feature in Cisco IOS 12.2XNB, 12.2XNC, 12.2XND, 12.4MD, 12.4T, 12.4XZ, and 12.4YA allows remote attackers to bypass intended access restrictions via crafted requests, aka Bug IDs CSCsx07114, CSCsu70214, CSCsw47076, CSCsv48603, CSCsy54122, and CSCsu50252.

The weakness was shared 09/23/2009 with Cisco (Website). It is possible to read the advisory at cisco.com. This vulnerability is known as CVE-2009-2862. The attack can be launched remotely. The exploitation doesn't need any form of authentication. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 03/30/2025). The attack technique deployed by this issue is T1068 according to MITRE ATT&CK.

The vulnerability scanner Nessus provides a plugin with the ID 49039 (Cisco IOS Software Object-group Access Control List Bypass Vulnerability - Cisco Systems), 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 43163 (Cisco IOS Software Object-Group Access Control List Bypass Vulnerability(cisco-sa-20090923-acl)).

A possible mitigation has been published even before and not after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (49039), SecurityFocus (BID 36495†), OSVDB (58338†), SecurityTracker (ID 1022933†) and Vulnerability Center (SBV-23562†). The entries VDB-50243, VDB-50242 and VDB-50240 are related to this item. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

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
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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: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 49039
Nessus Name: Cisco IOS Software Object-group Access Control List Bypass Vulnerability - Cisco Systems
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

08/19/2009 🔍
09/23/2009 +35 days 🔍
09/23/2009 +0 days 🔍
09/23/2009 +0 days 🔍
09/23/2009 +0 days 🔍
09/24/2009 +0 days 🔍
09/24/2009 +0 days 🔍
09/28/2009 +3 days 🔍
09/01/2010 +338 days 🔍
03/18/2015 +1659 days 🔍
03/30/2025 +3664 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: cisco.com
Organization: Cisco
Status: Not defined
Confirmation: 🔍

CVE: CVE-2009-2862 (🔍)
GCVE (CVE): GCVE-0-2009-2862
GCVE (VulDB): GCVE-100-50239
SecurityFocus: 36495 - Cisco IOS Object Group Access Control List Bypass Vulnerability
OSVDB: 58338 - Cisco IOS Object-group Access Control List Unspecified Bypass
SecurityTracker: 1022933
Vulnerability Center: 23562 - [cisco-sa-20090923-acl] Cisco IOS Object Group Access Control List Security Bypass Vulnerability, Medium

See also: 🔍

Entryinfo

Created: 03/18/2015 15:15
Updated: 03/30/2025 00:25
Changes: 03/18/2015 15:15 (59), 02/15/2017 09:17 (9), 08/23/2021 08:49 (4), 08/23/2021 08:54 (1), 07/27/2024 20:23 (15), 03/30/2025 00:25 (2)
Complete: 🔍
Cache ID: 216::103

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