MultipartParser DOS with too many fields or files in Starlette Framework
CVE-2023-30798

7.5HIGH

Key Information:

Vendor

Encode

Status
Starlette
Vendor
CVE Published:
21 April 2023

What is CVE-2023-30798?

The MultipartParser component of Encode's Starlette Python framework, prior to version 0.25.0, is vulnerable to exploitation by unauthenticated remote attackers. This vulnerability allows attackers to manipulate the number of form fields or files sent to the server, leading to excessive memory consumption. If exploited, this could result in service interruptions and a denial of service for the affected HTTP service.

Affected Version(s)

Starlette all 0 < 0.25.0

References

https://github.com/encode/starlette/security/advisories/G...
vendor-advisory
https://github.com/encode/starlette/commit/8c74c2c8dba703...
patch
https://vulncheck.com/advisories/starlette-multipartparse...
third-party-advisory

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.