VDB-98988 · CVE-2017-0881 · BID 97159

Zulip Chat Application Server up to 1.4.2 access control

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.2$0-$5k0.00

Summaryinfo

A vulnerability categorized as critical has been discovered in Zulip Chat Application Server up to 1.4.2. Affected is an unknown function. The manipulation results in access control. This vulnerability was named CVE-2017-0881. The attack may be performed from remote. There is no available exploit. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in Zulip Chat Application Server up to 1.4.2 (Application Server Software). It has been classified as critical. Affected is an unknown functionality. The manipulation with an unknown input leads to a access control vulnerability. CWE is classifying the issue as CWE-264. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

An error in the implementation of an autosubscribe feature in the check_stream_exists route of the Zulip group chat application server before 1.4.3 allowed an authenticated user to subscribe to a private stream that should have required an invitation from an existing member to join. The issue affects all previously released versions of the Zulip server.

The bug was discovered 03/29/2017. The weakness was presented 03/28/2017 (Website). The advisory is shared for download at securityfocus.com. This vulnerability is traded as CVE-2017-0881 since 11/30/2016. It is possible to launch the attack remotely. The successful exploitation needs a authentication. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1068.

Upgrading to version 1.4.3 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at SecurityFocus (BID 97159†). Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Vendor

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.2

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 4.3
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: Access control
CWE: CWE-264
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: 🔍
Upgrade: Chat Application Server 1.4.3
Patch: github.com

Timelineinfo

11/30/2016 🔍
03/27/2017 +117 days 🔍
03/28/2017 +1 days 🔍
03/28/2017 +0 days 🔍
03/28/2017 +0 days 🔍
03/29/2017 +1 days 🔍
11/22/2022 +2064 days 🔍

Sourcesinfo

Advisory: 7ecda1ac8e26d8fb3725e954b2dc4723dda2255f⛔
Status: Not defined

CVE: CVE-2017-0881 (🔍)
GCVE (CVE): GCVE-0-2017-0881
GCVE (VulDB): GCVE-100-98988
SecurityFocus: 97159 - Zulip Server CVE-2017-0881 Security Bypass Vulnerability
OSVDB: - CVE-2017-0881 - Zulip - Security Bypass Issue

Entryinfo

Created: 03/28/2017 22:05
Updated: 11/22/2022 18:05
Changes: 03/28/2017 22:05 (60), 08/23/2020 12:30 (4), 11/22/2022 18:05 (5)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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