Cisco IOS 15.0 TCP Connection input validation

CVSS Meta Temp Score
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6.5$0-$5k0.00

Summaryinfo

A vulnerability described as problematic has been identified in Cisco IOS 15.0. Affected by this issue is some unknown functionality of the component TCP Connection Handler. The manipulation results in input validation. This vulnerability is known as CVE-2010-2827. Furthermore, an exploit is available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability, which was classified as critical, was found in Cisco IOS 15.0 (Router Operating System). Affected is an unknown code block of the component TCP Connection Handler. The manipulation with an unknown input leads to a input validation vulnerability. CWE is classifying the issue as 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. This is going to have an impact on availability. CVE summarizes:

Cisco IOS 15.1(2)T allows remote attackers to cause a denial of service (resource consumption and TCP outage) via spoofed TCP packets, related to embryonic TCP connections that remain in the SYN_RCVD or SYN_SENT state, aka Bug ID CSCti18193.

The weakness was published 08/13/2010 with Cisco (Website). The advisory is available at cisco.com. This vulnerability is traded as CVE-2010-2827 since 07/23/2010. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Technical details are unknown but a private exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 49056 (Cisco IOS Software TCP Denial of Service Vulnerability - Cisco Systems), which helps to determine the existence of the flaw in a target environment. It is assigned to the family CISCO and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 43190 (Cisco IOS Software TCP Denial of Service Vulnerability).

Upgrading to version 15.1(2)T0a eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at cisco.com. The best possible mitigation is suggested to be upgrading to the latest version. 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 (49056), SecurityFocus (BID 42426†), OSVDB (67099†), Secunia (SA40958†) and Vulnerability Center (SBV-26792†). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 6.5

VulDB Base Score: 7.5
VulDB Temp Score: 6.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

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

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Private
Status: Proof-of-Concept

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 49056
Nessus Name: Cisco IOS Software TCP Denial of Service Vulnerability - Cisco Systems
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
Nessus Port: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: IOS 15.1(2)T0a
Patch: cisco.com

Timelineinfo

07/23/2010 🔍
08/12/2010 +20 days 🔍
08/12/2010 +0 days 🔍
08/12/2010 +0 days 🔍
08/13/2010 +1 days 🔍
08/13/2010 +0 days 🔍
08/15/2010 +1 days 🔍
08/16/2010 +1 days 🔍
08/19/2010 +3 days 🔍
09/01/2010 +13 days 🔍
01/21/2025 +5256 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: cisco.com
Organization: Cisco
Status: Confirmed

CVE: CVE-2010-2827 (🔍)
GCVE (CVE): GCVE-0-2010-2827
GCVE (VulDB): GCVE-100-4170
SecurityFocus: 42426 - Cisco IOS SYNRCVD/SYNSENT State TCP Connection Denial of Service Vulnerability
Secunia: 40958 - Cisco IOS TCP Connection Handling Denial of Service, Less Critical
OSVDB: 67099 - Cisco IOS Establishment Phase TCP Connection Saturation Remote DoS
Vulnerability Center: 26792 - [cisco-sa-20100812-tcp] Cisco IOS 15.1(2)T TCP Denial of Service Vulnerability, High

scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 08/19/2010 02:00
Updated: 01/21/2025 08:59
Changes: 08/19/2010 02:00 (76), 03/02/2017 11:28 (8), 03/18/2021 09:45 (3), 01/21/2025 08:59 (19)
Complete: 🔍
Cache ID: 216:BD2:103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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