Cisco IOS XE 15.0(1)EX3/15.2(1)E/15.2(2)E Challenge-Response input validation

CVSS Meta Temp Score
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CTI Interest Score
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6.8$0-$5k0.00

Summaryinfo

A vulnerability has been found in Cisco IOS XE 15.0(1)EX3/15.2(1)E/15.2(2)E and classified as problematic. This issue affects some unknown processing of the component Challenge-Response Handler. Performing a manipulation results in input validation. This vulnerability is reported as CVE-2014-7990. No exploit exists.

Detailsinfo

A vulnerability was found in Cisco IOS XE 15.0(1)EX3/15.2(1)E/15.2(2)E (Router Operating System). It has been classified as critical. This affects an unknown part of the component Challenge-Response 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 confidentiality, integrity, and availability. Systems with the "service internal" command configured and running on WS-C3850, WS-C3860, and AIR-CT5760 platforms are affected.

The weakness was disclosed 11/06/2014 with Cisco as CSCur09815 as confirmed security notice (Website). It is possible to read the advisory at tools.cisco.com. This vulnerability is uniquely identified as CVE-2014-7990 since 10/08/2014. The exploitability is told to be easy. Attacking locally is a requirement. A authentication is necessary for exploitation. The technical details are unknown and an exploit is not publicly available. The advisory points out:

Linux root shell access using the ''request system shell'' CLI without entering the right challenge response.

The vulnerability is also documented in the databases at X-Force (98529), SecurityFocus (BID 70968†), SecurityTracker (ID 1031179†) and Vulnerability Center (SBV-46930†). Be aware that VulDB is the high quality source 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: 7.8
VulDB Meta Temp Score: 6.8

VulDB Base Score: 7.8
VulDB Temp Score: 6.8
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: Input validation
CWE: CWE-20
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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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

10/08/2014 🔍
11/06/2014 +29 days 🔍
11/06/2014 +0 days 🔍
11/06/2014 +0 days 🔍
11/07/2014 +1 days 🔍
11/07/2014 +0 days 🔍
11/07/2014 +0 days 🔍
11/09/2014 +2 days 🔍
02/24/2022 +2664 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: CSCur09815
Organization: Cisco
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2014-7990 (🔍)
GCVE (CVE): GCVE-0-2014-7990
GCVE (VulDB): GCVE-100-68127
X-Force: 98529 - Cisco IOS XE challenge response security bypass, Medium Risk
SecurityFocus: 70968 - Cisco IOS XE Software CVE-2014-7990 Local Security Bypass Vulnerability
SecurityTracker: 1031179 - Cisco IOS XE Flaw in 'request system shell' Command Lets Local Administrative Users Gain Elevated Privileges
Vulnerability Center: 46930 - Cisco IOS XE 3.5E and earlier Local Privileges Escalation due to Improper Parsing of the \x27request system shell\x27 Command, Medium

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

Entryinfo

Created: 11/07/2014 10:39
Updated: 02/24/2022 09:01
Changes: 11/07/2014 10:39 (68), 06/11/2017 05:10 (4), 02/24/2022 09:01 (3)
Complete: 🔍
Cache ID: 216:45A:103

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