WinSCP up to 5.17.9 URL injection

CVSS Meta Temp Score
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CTI Interest Score
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7.7$0-$5k0.00

Summaryinfo

A vulnerability identified as critical has been detected in WinSCP up to 5.17.9. Affected is an unknown function of the component URL Handler. Performing a manipulation results in injection. This vulnerability is cataloged as CVE-2021-3331. It is possible to initiate the attack remotely. There is no exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability classified as critical has been found in WinSCP up to 5.17.9 (Connectivity Software). This affects some unknown functionality of the component URL Handler. The manipulation with an unknown input leads to a injection vulnerability. CWE is classifying the issue as CWE-74. The product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component. This is going to have an impact on confidentiality, integrity, and availability.

The weakness was shared 01/28/2021. The advisory is shared at winscp.net. This vulnerability is uniquely identified as CVE-2021-3331. 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 T1055 for this issue.

Upgrading to version 5.17.10 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.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.0
VulDB Meta Temp Score: 7.9

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

NVD Base Score: 9.8
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Injection
CWE: CWE-74 / CWE-707 / CWE-20
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: WinSCP 5.17.10
Patch: github.com

Timelineinfo

01/27/2021 🔍
01/28/2021 +1 days 🔍
01/28/2021 +0 days 🔍
02/21/2021 +24 days 🔍

Sourcesinfo

Product: github.com

Advisory: winscp.net
Status: Confirmed

CVE: CVE-2021-3331 (🔍)
GCVE (CVE): GCVE-0-2021-3331
GCVE (VulDB): GCVE-100-168849

Entryinfo

Created: 01/28/2021 08:49
Updated: 02/21/2021 07:57
Changes: 01/28/2021 08:49 (38), 02/21/2021 07:50 (5), 02/21/2021 07:57 (18)
Complete: 🔍
Cache ID: 216::103

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