Nextcloud Server up to 20.0.11/21.0.3 Image Preview config.php inclusion of functionality from untrusted control sphere

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.0$0-$5k0.00

Summaryinfo

A vulnerability marked as critical has been reported in Nextcloud Server up to 20.0.11/21.0.3. The impacted element is an unknown function of the file config.php of the component Image Preview Handler. The manipulation leads to inclusion of functionality from untrusted control sphere. This vulnerability is listed as CVE-2021-32802. The attack may be initiated remotely. There is no available exploit. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in Nextcloud Server up to 20.0.11/21.0.3 (Cloud Software). It has been rated as critical. This issue affects an unknown code of the file config.php of the component Image Preview Handler. The manipulation with an unknown input leads to a inclusion of functionality from untrusted control sphere vulnerability. Using CWE to declare the problem leads to CWE-829. The product imports, requires, or includes executable functionality (such as a library) from a source that is outside of the intended control sphere. Impacted is confidentiality, integrity, and availability.

The weakness was presented 09/08/2021. It is possible to read the advisory at hackerone.com. The identification of this vulnerability is CVE-2021-32802. Technical details of the vulnerability are known, but there is no available exploit.

By approaching the search of inurl:config.php it is possible to find vulnerable targets with Google Hacking.

Upgrading to version 20.0.12, 21.0.4 or 22.1.0 eliminates this vulnerability.

Statistical analysis made it clear that VulDB provides the best quality 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: 7.3
VulDB Meta Temp Score: 7.0

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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

Exploitinginfo

Class: Inclusion of functionality from untrusted control sphere
CWE: CWE-829
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined
Google Hack: 🔍

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 20.0.12/21.0.4/22.1.0

Timelineinfo

05/12/2021 🔍
09/08/2021 +119 days 🔍
09/08/2021 +0 days 🔍
09/10/2021 +2 days 🔍

Sourcesinfo

Advisory: hackerone.com
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2021-32802 (🔍)
GCVE (CVE): GCVE-0-2021-32802
GCVE (VulDB): GCVE-100-182123

Entryinfo

Created: 09/08/2021 07:16
Updated: 09/10/2021 10:56
Changes: 09/08/2021 07:16 (61), 09/10/2021 10:49 (2), 09/10/2021 10:56 (1)
Complete: 🔍
Cache ID: 216::103

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