Misskey up to 12.89.x Attachment server-side request forgery

Summaryinfo

A vulnerability classified as critical was found in Misskey up to 12.89.x. The impacted element is an unknown function of the component Attachment Handler. The manipulation results in server-side request forgery. This vulnerability is reported as CVE-2021-39195. The attack can be launched remotely. No exploit exists. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in Misskey up to 12.89.x. It has been classified as critical. Affected is an unknown function of the component Attachment Handler. The manipulation with an unknown input leads to a server-side request forgery vulnerability. CWE is classifying the issue as CWE-918. The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination. This is going to have an impact on confidentiality, integrity, and availability.

The weakness was disclosed 09/08/2021. The advisory is shared for download at github.com. This vulnerability is traded as CVE-2021-39195. There are neither technical details nor an exploit publicly available.

Upgrading to version 12.90.0 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying a patch 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

Name

• Misskey

Version

• 12.0
• 12.1
• 12.2
• 12.3
• 12.4
• 12.5
• 12.6
• 12.7
• 12.8
• 12.9
• 12.10
• 12.11
• 12.12
• 12.13
• 12.14
• 12.15
• 12.16
• 12.17
• 12.18
• 12.19
• 12.20
• 12.21
• 12.22
• 12.23
• 12.24
• 12.25
• 12.26
• 12.27
• 12.28
• 12.29
• 12.30
• 12.31
• 12.32
• 12.33
• 12.34
• 12.35
• 12.36
• 12.37
• 12.38
• 12.39
• 12.40
• 12.41
• 12.42
• 12.43
• 12.44
• 12.45
• 12.46
• 12.47
• 12.48
• 12.49
• 12.50
• 12.51
• 12.52
• 12.53
• 12.54
• 12.55
• 12.56
• 12.57
• 12.58
• 12.59
• 12.60
• 12.61
• 12.62
• 12.63
• 12.64
• 12.65
• 12.66
• 12.67
• 12.68
• 12.69
• 12.70
• 12.71
• 12.72
• 12.73
• 12.74
• 12.75
• 12.76
• 12.77
• 12.78
• 12.79
• 12.80
• 12.81
• 12.82
• 12.83
• 12.84
• 12.85
• 12.86
• 12.87
• 12.88
• 12.89

License

• open-source

CPE 2.3info

• 🔍
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CPE 2.2info

• 🔍
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