VDB-130215 · CVE-2019-1636 · BID 106718

Cisco Webex Teams Client URI os command injection

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.3$5k-$25k0.00

Summaryinfo

A vulnerability, which was classified as critical, has been found in Cisco Webex Teams Client. This affects an unknown function of the component URI Handler. Performing a manipulation results in os command injection. This vulnerability is known as CVE-2019-1636. Remote exploitation of the attack is possible. No exploit is available.

Detailsinfo

A vulnerability, which was classified as critical, was found in Cisco Webex Teams Client (Unified Communication Software) (affected version unknown). This affects an unknown functionality of the component URI Handler. The manipulation with an unknown input leads to a os command injection vulnerability. CWE is classifying the issue as CWE-78. The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

A vulnerability in the Cisco Webex Teams client, formerly Cisco Spark, could allow an attacker to execute arbitrary commands on a targeted system. This vulnerability is due to unsafe search paths used by the application URI that is defined in Windows operating systems. An attacker could exploit this vulnerability by convincing a targeted user to follow a malicious link. Successful exploitation could cause the application to load libraries from the directory targeted by the URI link. The attacker could use this behavior to execute arbitrary commands on the system with the privileges of the targeted user if the attacker can place a crafted library in a directory that is accessible to the vulnerable system.

The bug was discovered 01/23/2019. The weakness was published 01/23/2019 by Security Team (rgod) with Zero Day Initiative as cisco-sa-20190123-webex-teams as confirmed advisory (Website). It is possible to read the advisory at tools.cisco.com. This vulnerability is uniquely identified as CVE-2019-1636 since 12/06/2018. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. It demands that the victim is doing some kind of user interaction. 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 07/03/2023). The attack technique deployed by this issue is T1202 according to MITRE ATT&CK.

The commercial vulnerability scanner Qualys is able to test this issue with plugin 316450 (Cisco Webex Teams URI Handler Insecure Library Loading Vulnerability(cisco-sa-20190123-webex-teams)).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at SecurityFocus (BID 106718†). 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: 7.3
VulDB Meta Temp Score: 7.3

VulDB Base Score: 6.3
VulDB Temp Score: 6.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.8
NVD Vector: 🔍

CNA Base Score: 7.8
CNA Vector (Cisco Systems, Inc.): 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Os command injection
CWE: CWE-78 / CWE-77 / CWE-74
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

12/06/2018 🔍
01/23/2019 +48 days 🔍
01/23/2019 +0 days 🔍
01/23/2019 +0 days 🔍
01/23/2019 +0 days 🔍
01/24/2019 +1 days 🔍
07/03/2023 +1621 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: cisco-sa-20190123-webex-teams
Researcher: Security Team (rgod)
Organization: Zero Day Initiative
Status: Confirmed

CVE: CVE-2019-1636 (🔍)
GCVE (CVE): GCVE-0-2019-1636
GCVE (VulDB): GCVE-100-130215
SecurityFocus: 106718 - Cisco Webex Teams CVE-2019-1636 Local Untrusted Search Path vulnerability

Entryinfo

Created: 01/24/2019 15:23
Updated: 07/03/2023 11:09
Changes: 01/24/2019 15:23 (61), 05/05/2020 20:08 (6), 07/03/2023 11:09 (14)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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