[](https://renovatebot.com) This PR contains the following updates: | Package | Change | Age | Adoption | Passing | Confidence | |---|---|---|---|---|---| | [tornado](http://www.tornadoweb.org/) ([source](https://togithub.com/tornadoweb/tornado)) | `==6.2` -> `==6.3.3` | [](https://docs.renovatebot.com/merge-confidence/) | [](https://docs.renovatebot.com/merge-confidence/) | [](https://docs.renovatebot.com/merge-confidence/) | [](https://docs.renovatebot.com/merge-confidence/) | --- > [!WARNING] > Some dependencies could not be looked up. Check the Dependency Dashboard for more information. ### GitHub Vulnerability Alerts #### [CVE-2023-28370](https://nvd.nist.gov/vuln/detail/CVE-2023-28370) Open redirect vulnerability in Tornado versions 6.3.1 and earlier allows a remote unauthenticated attacker to redirect a user to an arbitrary web site and conduct a phishing attack by having user access a specially crafted URL. #### [GHSA-qppv-j76h-2rpx](https://togithub.com/tornadoweb/tornado/security/advisories/GHSA-qppv-j76h-2rpx) ## Summary Tornado interprets `-`, `+`, and `_` in chunk length and `Content-Length` values, which are not allowed by the HTTP RFCs. This can result in request smuggling when Tornado is deployed behind certain proxies that interpret those non-standard characters differently. This is known to apply to older versions of haproxy, although the current release is not affected. ## Details Tornado uses the `int` constructor to parse the values of `Content-Length` headers and chunk lengths in the following locations: ### `tornado/http1connection.py:445` ```python3 self._expected_content_remaining = int(headers["Content-Length"]) ``` ### `tornado/http1connection.py:621` ```python3 content_length = int(headers["Content-Length"]) # type: Optional[int] ``` ### `tornado/http1connection.py:671` ```python3 chunk_len = int(chunk_len_str.strip(), 16) ``` Because `int("0_0") == int("+0") == int("-0") == int("0")`, using the `int` constructor to parse and validate strings that should contain only ASCII digits is not a good strategy. --- ### Release Notes <details> <summary>tornadoweb/tornado (tornado)</summary> ### [`v6.3.3`](https://togithub.com/tornadoweb/tornado/compare/v6.3.2...v6.3.3) [Compare Source](https://togithub.com/tornadoweb/tornado/compare/v6.3.2...v6.3.3) ### [`v6.3.2`](https://togithub.com/tornadoweb/tornado/compare/v6.3.1...v6.3.2) [Compare Source](https://togithub.com/tornadoweb/tornado/compare/v6.3.1...v6.3.2) ### [`v6.3.1`](https://togithub.com/tornadoweb/tornado/compare/v6.3.0...v6.3.1) [Compare Source](https://togithub.com/tornadoweb/tornado/compare/v6.3.0...v6.3.1) ### [`v6.3`](https://togithub.com/tornadoweb/tornado/compare/v6.2.0...v6.3.0) [Compare Source](https://togithub.com/tornadoweb/tornado/compare/v6.2.0...v6.3.0) </details> --- ### Configuration 📅 **Schedule**: Branch creation - "" in timezone Etc/UTC, Automerge - "every weekend" in timezone Etc/UTC. 🚦 **Automerge**: Disabled by config. Please merge this manually once you are satisfied. ♻ **Rebasing**: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox. 🔕 **Ignore**: Close this PR and you won't be reminded about this update again. --- - [ ] <!-- rebase-check -->If you want to rebase/retry this PR, check this box --- This PR has been generated by [Mend Renovate](https://www.mend.io/free-developer-tools/renovate/). View repository job log [here](https://developer.mend.io/github/canonical/imagecraft). <!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiIzNy44Ny4yIiwidXBkYXRlZEluVmVyIjoiMzcuODcuMiIsInRhcmdldEJyYW5jaCI6Im1haW4ifQ==-->