VDB-116875 · CVE-2018-0242 · BID 103932

Cisco ASA Web-based Management Interface cross site scripting

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.7$5k-$25k0.00

Summaryinfo

A vulnerability has been found in Cisco ASA and classified as problematic. Affected by this vulnerability is an unknown functionality of the component Web-based Management Interface. This manipulation causes cross site scripting. This vulnerability is registered as CVE-2018-0242. Remote exploitation of the attack is possible. No exploit is available.

Detailsinfo

A vulnerability classified as problematic was found in Cisco ASA (Firewall Software) (the affected version unknown). Affected by this vulnerability is an unknown part of the component Web-based Management Interface. The manipulation with an unknown input leads to a cross site scripting vulnerability. 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 WebVPN web-based management interface of Cisco Adaptive Security Appliance could allow an unauthenticated, remote attacker to conduct a cross-site scripting (XSS) attack against a user of the web-based management interface of an affected device. The vulnerability is due to insufficient validation of user-supplied input by the web-based management interface of an affected device. An attacker could exploit this vulnerability by persuading a user of the interface to click a crafted link. A successful exploit could allow the attacker to execute arbitrary script code in the context of the interface or allow the attacker to access sensitive browser-based information. Cisco Bug IDs: CSCvg33985.

The bug was discovered 04/18/2018. The weakness was published 04/19/2018 with Cisco as cisco-sa-20180418-asawvpn as confirmed advisory (Website). It is possible to read the advisory at tools.cisco.com. This vulnerability is known as CVE-2018-0242 since 11/27/2017. 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. The pricing for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 03/03/2023). The attack technique deployed by this issue is T1059.007 according to MITRE ATT&CK.

The vulnerability was handled as a non-public zero-day exploit for at least 1 days. During that time the estimated underground price was around $5k-$25k. The commercial vulnerability scanner Qualys is able to test this issue with plugin 316245 (Cisco Adaptive Security Appliance WebVPN Cross-Site Scripting Vulnerability (cisco-sa-20180418-asawvpn)).

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 103932†). Similar entry is available at VDB-116878. Statistical analysis made it clear that VulDB provides the best quality 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: 5.7
VulDB 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: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Cross site scripting
CWE: CWE-79 / CWE-94 / CWE-74
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
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

11/27/2017 🔍
04/18/2018 +142 days 🔍
04/18/2018 +0 days 🔍
04/19/2018 +0 days 🔍
04/19/2018 +0 days 🔍
04/21/2018 +2 days 🔍
03/03/2023 +1777 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: cisco-sa-20180418-asawvpn
Organization: Cisco
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2018-0242 (🔍)
GCVE (CVE): GCVE-0-2018-0242
GCVE (VulDB): GCVE-100-116875
SecurityFocus: 103932 - Cisco Adaptive Security Appliance CVE-2018-0242 Cross Site Scripting Vulnerability
SecurityTracker: 1040713

See also: 🔍

Entryinfo

Created: 04/21/2018 16:12
Updated: 03/03/2023 14:16
Changes: 04/21/2018 16:12 (63), 01/30/2020 07:31 (5), 03/03/2023 14:16 (3)
Complete: 🔍
Cache ID: 216::103

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