Cisco IOS XR 5.2.1.BASE/5.2.3.BASE race condition

CVSS Meta Temp Score
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CTI Interest Score
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4.6$0-$5k0.00

A vulnerability has been found in Cisco IOS XR 5.2.1.BASE/5.2.3.BASE (Router Operating System) and classified as problematic. Affected by this vulnerability is some unknown functionality. The manipulation with an unknown input leads to a race condition vulnerability. The CWE definition for the vulnerability is CWE-362. The product contains a code sequence that can run concurrently with other code, and the code sequence requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence that is operating concurrently. As an impact it is known to affect availability. The summary by CVE is:

Race condition in the lighttpd module in Cisco IOS XR 5.1 and earlier on Network Convergence System 6000 devices allows remote attackers to cause a denial of service (process reload) by establishing many TCP sessions, aka Bug ID CSCuq45239.

The weakness was disclosed 11/25/2014 with Cisco as CSCuq45239 as confirmed security notice (Website). It is possible to read the advisory at tools.cisco.com. This vulnerability is known as CVE-2014-8005 since 10/08/2014. The exploitation appears to be easy. 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.

Upgrading to version 5.2.3.7i.BASE eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at X-Force (98937). The entry 68283 is pretty similar.

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: 4.6

VulDB Base Score: 5.3
VulDB Temp Score: 4.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Race condition
CWE: CWE-362
CAPEC: 🔍
ATT&CK: 🔍

Local: No
Remote: Yes

Availability: 🔍
Status: Unproven

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: 🔍

Upgrade: IOS XR 5.2.3.7i.BASE

Timelineinfo

10/08/2014 🔍
11/25/2014 +48 days 🔍
11/25/2014 +0 days 🔍
11/25/2014 +0 days 🔍
11/25/2014 +0 days 🔍
11/26/2014 +1 days 🔍
11/26/2014 +0 days 🔍
11/27/2014 +1 days 🔍
06/13/2017 +929 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: CSCuq45239
Organization: Cisco
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2014-8005 (🔍)
X-Force: 98937 - Cisco IOS XR lighttpd denial of service, Medium Risk
SecurityTracker: 1031262 - Cisco IOS XR Flaw in lighttpd Lets Remote Users Deny Service
Vulnerability Center: 47311 - Cisco IOS XR 5.2.1.BASE and 5.2.3.BASE Remote DoS via TCP Sessions, Medium
SecurityFocus: 71287 - Cisco IOS XR Software CVE-2014-8005 TCP Session Denial of Service Vulnerability

scip Labs: https://www.scip.ch/en/?labs.20150108
See also: 🔍

Entryinfo

Created: 11/26/2014 10:42
Updated: 06/13/2017 08:34
Changes: 11/26/2014 10:42 (72), 06/13/2017 08:34 (1)
Complete: 🔍

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