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Description
Vapor is an HTTP web framework for Swift and middleware is a logic chain between the client and a Vapor route handler. FileMiddleware enables the serving of assets from the Public folder of a project to the client.
Vapor before 4.60.3 is vulnerable to denial of service due to an integer overflow when given invalid range headers while using FileMiddleware. This is patched in 4.60.3.
Basic information
Type
reviewed
Severity
high Advisory on GitHub
Open advisory ↗ Repository advisory
Open repository advisory ↗ Source code
Browse source ↗ Published (advisory)
2023-06-07 16:26:25 UTC
Updated
2023-06-19 16:45:07 UTC
GitHub reviewed
2023-06-07 16:26:25 UTC
NVD published
2022-05-31
EPSS Score
Score
Percentile
0.62%
69.51%
CVSS Scores
Base score
Version
Severity
Vector
7.5
3.1
—
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
CWEs
CWE id
Name
CWE-190
Integer Overflow or Wraparound
Affected packages (1)
Vulnerable version ranges and first patched releases as published by GitHub.
Ecosystem
Package
Vulnerable range
First patched
Vulnerable functions
swift
github.com/vapor/vapor < 4.60.3
4.60.3
—
cvelogic
Threat Intelligence