Discourse up to 2.8.8/2.9.0.beta9 ZIP unrestricted upload

CVSS Meta Temp Score
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CTI Interest Score
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6.9$0-$5k0.00

Summaryinfo

A vulnerability was found in Discourse up to 2.8.8/2.9.0.beta9. It has been classified as critical. This affects an unknown part of the component ZIP Handler. This manipulation causes unrestricted upload. This vulnerability appears as CVE-2022-36066. The attack may be initiated remotely. There is no available exploit. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability has been found in Discourse up to 2.8.8/2.9.0.beta9 and classified as critical. Affected by this vulnerability is an unknown code block of the component ZIP Handler. The manipulation with an unknown input leads to a unrestricted upload vulnerability. The CWE definition for the vulnerability is CWE-434. The product allows the attacker to upload or transfer files of dangerous types that can be automatically processed within the product's environment. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

Discourse is an open source discussion platform. In versions prior to 2.8.9 on the `stable` branch and prior to 2.9.0.beta10 on the `beta` and `tests-passed` branches, admins can upload a maliciously crafted Zip or Gzip Tar archive to write files at arbitrary locations and trigger remote code execution. The problem is patched in version 2.8.9 on the `stable` branch and version 2.9.0.beta10 on the `beta` and `tests-passed` branches. There are no known workarounds.

The weakness was presented 09/30/2022 as GHSA-grvh-qcpg-hfmv. The advisory is shared at github.com. This vulnerability is known as CVE-2022-36066 since 07/15/2022. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1608.002 for this issue.

Upgrading to version 2.8.9 or 2.9.0.beta10 eliminates this vulnerability. Applying the patch b27d5626d208a22c516a0adfda7554b67b493835 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

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Productinfo

Type

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.0
VulDB Meta Temp Score: 6.9

VulDB Base Score: 4.7
VulDB Temp Score: 4.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.2
NVD Vector: 🔍

CNA Base Score: 9.1
CNA Vector (GitHub, Inc.): 🔍

CVSSv2info

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

Exploitinginfo

Class: Unrestricted upload
CWE: CWE-434 / CWE-284 / CWE-266
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: Discourse 2.8.9/2.9.0.beta10
Patch: b27d5626d208a22c516a0adfda7554b67b493835

Timelineinfo

07/15/2022 🔍
09/30/2022 +77 days 🔍
09/30/2022 +0 days 🔍
10/26/2022 +26 days 🔍

Sourcesinfo

Product: github.com

Advisory: GHSA-grvh-qcpg-hfmv
Status: Confirmed

CVE: CVE-2022-36066 (🔍)
GCVE (CVE): GCVE-0-2022-36066
GCVE (VulDB): GCVE-100-209893

Entryinfo

Created: 09/30/2022 08:35
Updated: 10/26/2022 09:17
Changes: 09/30/2022 08:35 (52), 10/26/2022 09:17 (11)
Complete: 🔍
Cache ID: 216::103

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