JetBrains Ktor up to 2.0.x File Download incomplete blacklist

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.4$0-$5k0.00

A vulnerability classified as critical has been found in JetBrains Ktor up to 2.0.x. This affects an unknown code block of the component File Download Handler. The manipulation with an unknown input leads to a incomplete blacklist vulnerability. CWE is classifying the issue as CWE-184. The product implements a protection mechanism that relies on a list of inputs (or properties of inputs) that are not allowed by policy or otherwise require other action to neutralize before additional processing takes place, but the list is incomplete, leading to resultant weaknesses. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

JetBrains Ktor before 2.1.0 was vulnerable to the Reflect File Download attack

The weakness was presented 08/12/2022. The advisory is shared at github.com. This vulnerability is uniquely identified as CVE-2022-38179 since 08/12/2022. It demands that the victim is doing some kind of user interaction. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1562.006 for this issue.

Upgrading to version 2.1.0 eliminates this vulnerability. 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.

Productinfo

Vendor

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.5
VulDB Meta Temp Score: 5.4

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

CNA Base Score: 4.7
CNA Vector (cve@jetbrains.com): 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Incomplete blacklist
CWE: CWE-184 / CWE-183 / CWE-20
CAPEC: 🔍
ATT&CK: 🔍

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: Ktor 2.1.0
Patch: github.com

Timelineinfo

08/12/2022 🔍
08/12/2022 +0 days 🔍
08/12/2022 +0 days 🔍
08/12/2022 +0 days 🔍

Sourcesinfo

Advisory: github.com
Status: Confirmed

CVE: CVE-2022-38179 (🔍)

Entryinfo

Created: 08/12/2022 16:33
Changes: 08/12/2022 16:33 (51)
Complete: 🔍

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