Zulip Server up to 2.1.2 Markdown ui layer

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.8$0-$5k0.00

A vulnerability, which was classified as critical, has been found in Zulip Server up to 2.1.2. Affected by this issue is an unknown part. The manipulation as part of a Markdown leads to a ui layer vulnerability. Using CWE to declare the problem leads to CWE-1021. The web application does not restrict or incorrectly restricts frame objects or UI layers that belong to another application or domain, which can lead to user confusion about which interface the user is interacting with. Impacted is confidentiality, and integrity. CVE summarizes:

Zulip Server before 2.1.3 allows reverse tabnabbing via the Markdown functionality.

The weakness was released 04/20/2020 (Website). The advisory is shared for download at blog.zulip.org. This vulnerability is handled as CVE-2020-9444 since 02/28/2020. The attack may be launched remotely. No form of authentication is required for exploitation. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available.

Upgrading to version 2.1.3 eliminates this vulnerability.

Entries connected to this vulnerability are available at 154108 and 154137.

Productinfo

Vendor

Name

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: 6.1
VulDB Meta Temp Score: 5.9

VulDB Base Score: 6.1
VulDB Temp Score: 5.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.1
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Ui layer
CWE: CWE-1021
CAPEC: 🔍
ATT&CK: 🔍

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

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: Server 2.1.3

Timelineinfo

02/28/2020 🔍
04/20/2020 +52 days 🔍
04/21/2020 +1 days 🔍
10/10/2020 +172 days 🔍

Sourcesinfo

Advisory: blog.zulip.org
Status: Not defined
Confirmation: 🔍

CVE: CVE-2020-9444 (🔍)
See also: 🔍

Entryinfo

Created: 04/21/2020 09:37
Updated: 10/10/2020 17:41
Changes: 04/21/2020 09:37 (39), 04/22/2020 07:52 (17), 10/10/2020 17:41 (1)
Complete: 🔍

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