BookStack Pathname path traversal

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.2$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, was found in BookStack. Affected by this issue is some unknown functionality of the component Pathname Handler. The manipulation results in path traversal. This vulnerability is reported as CVE-2021-3916. The attack can be launched remotely. No exploit exists. It is advisable to implement a patch to correct this issue.

Detailsinfo

A vulnerability, which was classified as critical, was found in BookStack (affected version not known). Affected is some unknown functionality of the component Pathname Handler. The manipulation with an unknown input leads to a path traversal vulnerability. CWE is classifying the issue as CWE-22. The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. This is going to have an impact on confidentiality, integrity, and availability.

The weakness was disclosed 11/05/2021. The advisory is shared for download at huntr.dev. This vulnerability is traded as CVE-2021-3916 since 10/31/2021. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1006.

Applying the patch 43830a372fc51a8793199d04a34c3f4ebdfccc7b is able to eliminate this problem. The bugfix is ready for download at github.com.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Name

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.2

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

CNA Base Score: 6.5
CNA Vector (huntr.dev): 🔍

CVSSv2info

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

Exploitinginfo

Class: Path traversal
CWE: CWE-22
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: Patch
Status: 🔍

0-Day Time: 🔍

Patch: 43830a372fc51a8793199d04a34c3f4ebdfccc7b

Timelineinfo

10/31/2021 🔍
11/05/2021 +5 days 🔍
11/05/2021 +0 days 🔍
11/10/2021 +5 days 🔍

Sourcesinfo

Advisory: 43830a372fc51a8793199d04a34c3f4ebdfccc7b
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2021-3916 (🔍)
GCVE (CVE): GCVE-0-2021-3916
GCVE (VulDB): GCVE-100-186132

Entryinfo

Created: 11/05/2021 18:39
Updated: 11/10/2021 07:44
Changes: 11/05/2021 18:39 (48), 11/10/2021 07:39 (3), 11/10/2021 07:44 (1)
Complete: 🔍
Cache ID: 216::103

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