Skip to content

Navigation Menu

Sign in
Appearance settings

Search code, repositories, users, issues, pull requests...

Provide feedback

We read every piece of feedback, and take your input very seriously.

Saved searches

Use saved searches to filter your results more quickly

Appearance settings

Out-of-memory when reading a HTTP response with large Content-Lenght #119451

Copy link
Copy link
Open
@serhiy-storchaka

Description

@serhiy-storchaka
Issue body actions

http.client.HTTPResponse.read() (without argument) consumes the amount of memory specified by the value of the Content-Lenght header in the response before starting receiving the data from the socket. Normally, if the server does not send enough data, the client gets IncompleteRead error, but if Content-Lenght is too large, it can consume a large amount of memory and CPU time and cause swapping. Therefore, a maleficent server can cause a DOS attack on client by sending a small response.

Linked PRs

Metadata

Metadata

Assignees

No one assigned

    Labels

    3.10only security fixesonly security fixes3.11only security fixesonly security fixes3.12only security fixesonly security fixes3.13bugs and security fixesbugs and security fixes3.14bugs and security fixesbugs and security fixes3.8 (EOL)end of lifeend of life3.9only security fixesonly security fixesstdlibPython modules in the Lib dirPython modules in the Lib dirtopic-IOtype-securityA security issueA security issue

    Projects

    No projects

    Milestone

    No milestone

    Relationships

    None yet

    Development

    No branches or pull requests

    Issue actions

      Morty Proxy This is a proxified and sanitized view of the page, visit original site.