Directory traversal in Rack::Directory app bundled with Rack
There was a possible directory traversal vulnerability in the Rack::Directory app
that is bundled with Rack.
Versions Affected: rack < 2.2.0
Not affected: Applications that do not use Rack::Directory.
Fixed Versions: 2.1.3, >= 2.2.0
Impact
If certain directories exist in a director that is managed by
Rack::Directory, an attacker could, using this vulnerability, read the
contents of files on the server that were outside of the root specified in the
Rack::Directory initializer.
Workarounds
Until such time as the patch is applied or their Rack version is upgraded,
we recommend that developers do not use Rack::Directory in their
Percent-encoded cookies can be used to overwrite existing prefixed cookie names
It is possible to forge a secure or host-only cookie prefix in Rack using
an arbitrary cookie write by using URL encoding (percent-encoding) on the
name of the cookie. This could result in an application that is dependent on
this prefix to determine if a cookie is safe to process being manipulated
into processing an insecure or cross-origin request.
This vulnerability has been assigned the CVE identifier CVE-2020-8184.
Versions Affected: rack < 2.2.3, rack < 2.1.4
Not affected: Applications which do not rely on __Host- and __Secure- prefixes to determine if a cookie is safe to process
Fixed Versions: rack >= 2.2.3, rack >= 2.1.4
Impact
An attacker may be able to trick a vulnerable application into processing an
insecure (non-SSL) or cross-origin request if they can gain the ability to write
arbitrary cookies that are sent to the application.
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Bumps rack from 2.0.9 to 2.2.3. This update includes security fixes.
Vulnerabilities fixed
Sourced from The Ruby Advisory Database.
Sourced from The Ruby Advisory Database.
Commits
1741c58bump version5ccca47When parsing cookies, only decode the valuesa5e80f0Bump version.b0de37dRemove trailing whitespace.1a784e5Prepare CHANGELOG for next patch release.a0d57d4Fix to handle same_site option for session poola9b223bEnsure full match. Fixes #1590.f4c5645Double assignment is still needed to prevent an "unused variable" warning5c121ddRevert "Update Thin handler to better handle more options"961d976Prepare point release.Dependabot will resolve any conflicts with this PR as long as you don't alter it yourself. You can also trigger a rebase manually by commenting
@dependabot rebase.Dependabot commands and options
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