Description

The software uses external input to construct a pathname that is intended to identify a file or directory but it does not properly neutralize or validate special elements within the pathname.

Impact

Make the software resolve the pathname to a location that is outside of the intended target, for instance: /etc/passwd.

Recommendation

- Prevent the attacker from constructing the pathname.
- Validate/Neutralize the input for special elements like: .., ~, /.

Threat

Authenticated attacker from the Internet.

Expected Remediation Time

⌚ 45 minutes.

Score

Default score using CVSS 3.1. It may change depending on the context of the src.

Base

• Attack vector: N
• Attack complexity: L
• Privileges required: N
• User interaction: N
• Scope: U
• Confidentiality: L
• Integrity: N
• Availability: N

Temporal

• Exploit code maturity: P
• Remediation level: X
• Report confidence: X

Result

• Vector string: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:P/RL:X/RC:X
• Score:
• Base: 5.3
• Temporal: 5.0
• Severity:
• Base: Medium
• Temporal: Medium

Score 4.0

Default score using CVSS 4.0. It may change depending on the context of the src.

Base 4.0

• Attack vector: N
• Attack complexity: L
• Attack Requirements: N
• Privileges required: N
• User interaction: N
• Confidentiality (VC): L
• Integrity (VI): N
• Availability (VA): N
• Confidentiality (SC): N
• Integrity (SI): N
• Availability (SA): N

Threat 4.0

• Exploit maturity: P

Result 4.0

• Vector string: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P
• Score:
• CVSS-BT: 5.5
• Severity:
• CVSS-BT: Medium

Requirements

• 173.Discard unsafe inputs
• 320.Avoid client-side control enforcement
• 342.Validate request parameters

Fixes

• Java
• Elixir
• C-Sharp
• Go
• Ruby
• PHP
• Scala
• Python
• TypeScript

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