Package Instance

Rack has possible DoS Vulnerability with Range Header
# Possible DoS Vulnerability with Range Header in Rack

There is a possible DoS vulnerability relating to the Range request header in
Rack.  This vulnerability has been assigned the CVE identifier CVE-2024-26141.

Versions Affected:  >= 1.3.0.
Not affected:       < 1.3.0
Fixed Versions:     3.0.9.1, 2.2.8.1

Impact
------
Carefully crafted Range headers can cause a server to respond with an
unexpectedly large response. Responding with such large responses could lead
to a denial of service issue.

Vulnerable applications will use the `Rack::File` middleware or the
`Rack::Utils.byte_ranges` methods (this includes Rails applications).

Releases
--------
The fixed releases are available at the normal locations.

Workarounds
-----------
There are no feasible workarounds for this issue.

Patches
-------
To aid users who aren't able to upgrade immediately we have provided patches for
the two supported release series. They are in git-am format and consist of a
single changeset.

* 3-0-range.patch - Patch for 3.0 series
* 2-2-range.patch - Patch for 2.2 series

Credits
-------

Thank you [ooooooo_q](https://hackerone.com/ooooooo_q) for the report and
patch

Directory traversal in Rack::Directory app bundled with Rack
A directory traversal vulnerability exists in rack < 2.2.0 that allows an attacker perform directory traversal vulnerability in the Rack::Directory app that is bundled with Rack which could result in information disclosure.

Rack vulnerable to Cross-site Scripting
There is a possible XSS vulnerability in Rack before 2.0.6 and 1.6.11. Carefully crafted requests can impact the data returned by the `scheme` method on `Rack::Request`. Applications that expect the scheme to be limited to 'http' or 'https' and do not escape the return value could be vulnerable to an XSS attack. Note that applications using the normal escaping mechanisms provided by Rails may not impacted, but applications that bypass the escaping mechanisms, or do not use them may be vulnerable.

Rack Header Parsing leads to Possible Denial of Service Vulnerability
# Possible Denial of Service Vulnerability in Rack Header Parsing

There is a possible denial of service vulnerability in the header parsing
routines in Rack.  This vulnerability has been assigned the CVE identifier
CVE-2024-26146.

Versions Affected:  All.
Not affected:       None
Fixed Versions:     2.0.9.4, 2.1.4.4, 2.2.8.1, 3.0.9.1

Impact
------
Carefully crafted headers can cause header parsing in Rack to take longer than
expected resulting in a possible denial of service issue. Accept and Forwarded
headers are impacted.

Ruby 3.2 has mitigations for this problem, so Rack applications using Ruby 3.2
or newer are unaffected.

Releases
--------
The fixed releases are available at the normal locations.

Workarounds
-----------
There are no feasible workarounds for this issue.

Patches
-------
To aid users who aren't able to upgrade immediately we have provided patches for
the two supported release series. They are in git-am format and consist of a
single changeset.

* 2-0-header-redos.patch - Patch for 2.0 series
* 2-1-header-redos.patch - Patch for 2.1 series
* 2-2-header-redos.patch - Patch for 2.2 series
* 3-0-header-redos.patch - Patch for 3.0 series

Credits
-------

Thanks to [svalkanov](https://hackerone.com/svalkanov) for reporting this and
providing patches!