CVE-2018-16471

NameCVE-2018-16471
DescriptionThere 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.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
ReferencesDLA-1585-1
Debian Bugs913005

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
ruby-rack (PTS)buster2.0.6-3fixed
buster (security)2.0.6-3+deb10u3fixed
bullseye (security), bullseye2.1.4-3+deb11u1fixed
bookworm2.2.6.4-1fixed
sid, trixie2.2.7-1fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
ruby-racksourcejessie1.5.2-3+deb8u2DLA-1585-1
ruby-racksourcestretch1.6.4-4+deb9u1
ruby-racksource(unstable)1.6.4-6913005

Notes

Fixed by: https://github.com/rack/rack/commit/e5d58031b766e49687157b45edab1b8457d972bd (master)
Fixed by: https://github.com/rack/rack/commit/313dd6a05a5924ed6c82072299c53fed09e39ae7 (2.0.6)
Fixed by: https://github.com/rack/rack/commit/97ca63d87d88b4088fb1995b14103d4fe6a5e594 (1.6.11)

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