Zulip Server up to 1.7.1 Frontend Markdown Processor 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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4.9$0-$5k0.00

Summaryinfo

A vulnerability described as problematic has been identified in Zulip Server up to 1.7.1. Affected is an unknown function of the component Frontend Markdown Processor. Such manipulation leads to cross site scripting. This vulnerability is traded as CVE-2018-9986. The attack may be launched remotely. There is no exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in Zulip Server up to 1.7.1. It has been rated as problematic. Affected by this issue is an unknown code block of the component Frontend Markdown Processor. The manipulation with an unknown input leads to a cross site scripting vulnerability. Using CWE to declare the problem leads to 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. Impacted is integrity. CVE summarizes:

In Zulip Server versions before 1.7.2, there were XSS issues with the frontend markdown processor.

The bug was discovered 04/12/2018. The weakness was shared 04/18/2018 (Website). The advisory is shared for download at blog.zulip.org. This vulnerability is handled as CVE-2018-9986 since 04/10/2018. 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. The MITRE ATT&CK project declares the attack technique as T1059.007.

The vulnerability was handled as a non-public zero-day exploit for at least 6 days. During that time the estimated underground price was around $0-$5k.

Upgrading to version 1.7.2 eliminates this vulnerability.

The entries VDB-116325, VDB-116326 and VDB-116327 are related to this item. Once again VulDB remains the best source for vulnerability data.

Productinfo

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.2
VulDB Meta Temp Score: 5.1

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.1
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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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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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Server 1.7.2

Timelineinfo

04/10/2018 🔍
04/12/2018 +2 days 🔍
04/18/2018 +5 days 🔍
04/18/2018 +0 days 🔍
04/18/2018 +0 days 🔍
01/25/2020 +647 days 🔍

Sourcesinfo

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

CVE: CVE-2018-9986 (🔍)
GCVE (CVE): GCVE-0-2018-9986
GCVE (VulDB): GCVE-100-116324
See also: 🔍

Entryinfo

Created: 04/18/2018 16:13
Updated: 01/25/2020 20:07
Changes: 04/18/2018 16:13 (59), 01/25/2020 20:07 (2)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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