uftpd up to 2.10 FTP Command compose_abspath path traversal

CVSS Meta Temp Score
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CTI Interest Score
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6.4$0-$5k0.00

Summaryinfo

A vulnerability was found in uftpd up to 2.10. It has been declared as critical. Affected by this issue is the function compose_abspath of the component FTP Command Handler. Executing a manipulation can lead to path traversal. This vulnerability is registered as CVE-2020-5221. It is possible to launch the attack remotely. No exploit is available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability has been found in uftpd up to 2.10 (File Transfer Software) and classified as critical. This vulnerability affects the function compose_abspath of the component FTP Command Handler. The manipulation with an unknown input leads to a path traversal vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

In uftpd before 2.11, it is possible for an unauthenticated user to perform a directory traversal attack using multiple different FTP commands and read and write to arbitrary locations on the filesystem due to the lack of a well-written chroot jail in compose_abspath(). This has been fixed in version 2.11

The weakness was published 01/22/2020 (GitHub Repository). The advisory is shared for download at github.com. This vulnerability was named CVE-2020-5221 since 01/02/2020. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Successful exploitation requires user interaction by the victim. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1006.

Upgrading to version 2.11 eliminates this vulnerability.

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Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.7
VulDB Meta Temp Score: 6.4

VulDB Base Score: 7.1
VulDB Temp Score: 6.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.5
NVD Vector: 🔍

CNA Base Score: 6.5
CNA Vector (GitHub, Inc.): 🔍

CVSSv2info

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

NVD Base Score: 🔍

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: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: uftpd 2.11
Patch: github.com

Timelineinfo

01/02/2020 🔍
01/22/2020 +20 days 🔍
01/23/2020 +1 days 🔍
03/25/2024 +1523 days 🔍

Sourcesinfo

Advisory: 455b47d3756aed162d2d0ef7f40b549f3b5b30fe
Status: Not defined

CVE: CVE-2020-5221 (🔍)
GCVE (CVE): GCVE-0-2020-5221
GCVE (VulDB): GCVE-100-149260

Entryinfo

Created: 01/23/2020 08:50
Updated: 03/25/2024 13:15
Changes: 01/23/2020 08:50 (39), 01/23/2020 08:55 (12), 03/25/2024 13:09 (18), 03/25/2024 13:15 (18)
Complete: 🔍
Cache ID: 216::103

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