Cisco WebEx Web Framework Parameter DOM-Based cross site scripting
CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
---|---|---|
5.7 | $5k-$25k | 0.00 |
A vulnerability classified as problematic was found in Cisco WebEx (Unified Communication Software) (version unknown). Affected by this vulnerability is an unknown function of the component Web Framework. The manipulation as part of a Parameter leads to a cross site scripting vulnerability (DOM-Based). The CWE definition for the vulnerability is CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. As an impact it is known to affect integrity. The summary by CVE is:
A vulnerability in the web framework of Cisco Webex could allow an unauthenticated, remote attacker to conduct a Document Object Model-based (DOM-based) cross-site scripting (XSS) attack against the user of the web interface of an affected system. The vulnerability is due to insufficient input validation of certain parameters that are passed to the affected software by using the HTTP POST method. An attacker who can submit malicious scripts to the affected user interface element could execute arbitrary script or HTML code in the user's browser in the context of the affected site. Cisco Bug IDs: CSCvj33287.
The bug was discovered 07/18/2018. The weakness was presented 07/18/2018 as cisco-sa-20180718-webex-DOM-xs as confirmed advisory (Website). The advisory is shared at tools.cisco.com. This vulnerability is known as CVE-2018-0390 since 11/27/2017. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 03/08/2020). MITRE ATT&CK project uses the attack technique T1059.007 for this issue.
The commercial vulnerability scanner Qualys is able to test this issue with plugin 38740 (Cisco Webex DOM-Based Cross-Site Scripting Vulnerability(cisco-sa-20180718-webex-DOM-xss)).
There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.
Product
Type
Vendor
Name
License
CPE 2.3
CPE 2.2
CVSSv4
VulDB CVSS-B Score: 🔍VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 5.7VulDB Meta Temp Score: 5.7
VulDB Base Score: 5.3
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍
NVD Base Score: 6.1
NVD Vector: 🔍
CVSSv2
AV | AC | Au | C | I | A |
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💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
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unlock | unlock | unlock | unlock | unlock | unlock |
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍
NVD Base Score: 🔍
Exploiting
Name: DOM-BasedClass: Cross site scripting / DOM-Based
CWE: CWE-79 / CWE-74 / CWE-707
CAPEC: 🔍
ATT&CK: 🔍
Local: No
Remote: Yes
Availability: 🔍
Status: Not defined
EPSS Score: 🔍
EPSS Percentile: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍
0-Day | unlock | unlock | unlock | unlock |
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Today | unlock | unlock | unlock | unlock |
Qualys ID: 🔍
Qualys Name: 🔍
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: no mitigation knownStatus: 🔍
Timeline
11/27/2017 🔍07/18/2018 🔍
07/18/2018 🔍
07/18/2018 🔍
07/18/2018 🔍
07/19/2018 🔍
03/08/2020 🔍
Sources
Vendor: cisco.comAdvisory: cisco-sa-20180718-webex-DOM-xs
Status: Confirmed
Confirmation: 🔍
CVE: CVE-2018-0390 (🔍)
SecurityFocus: 104865 - Cisco WebEx CVE-2018-0390 Cross Site Scripting Vulnerability
Entry
Created: 07/19/2018 09:33Updated: 03/08/2020 13:57
Changes: 07/19/2018 09:33 (63), 03/08/2020 13:57 (4)
Complete: 🔍
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