CVE-2021-31799

NameCVE-2021-31799
DescriptionIn RDoc 3.11 through 6.x before 6.3.1, as distributed with Ruby through 3.0.1, it is possible to execute arbitrary code via | and tags in a filename.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
ReferencesDLA-2780-1, DSA-5066-1, ELA-495-1
Debian Bugs990815

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
ruby2.1 (PTS)jessie, jessie (lts)2.1.5-2+deb8u14fixed
ruby2.3 (PTS)stretch (security)2.3.3-1+deb9u11fixed
stretch (lts), stretch2.3.3-1+deb9u12fixed
ruby2.5 (PTS)buster, buster (lts)2.5.5-3+deb10u7fixed
buster (security)2.5.5-3+deb10u6fixed
ruby2.7 (PTS)bullseye2.7.4-1+deb11u1fixed
bullseye (security)2.7.4-1+deb11u2fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
ruby2.1sourcejessie2.1.5-2+deb8u12ELA-495-1
ruby2.1source(unstable)(unfixed)
ruby2.3sourcestretch2.3.3-1+deb9u10DLA-2780-1
ruby2.3source(unstable)(unfixed)
ruby2.5sourcebuster2.5.5-3+deb10u4DSA-5066-1
ruby2.5source(unstable)(unfixed)
ruby2.7source(unstable)2.7.4-1990815

Notes

Introduced in (rdoc): https://github.com/ruby/rdoc/commit/4a8b7bed7cd5647db92c620bc6f33e4c309d2212 (v3.11)
Fixed in (rdoc): https://github.com/ruby/rdoc/commit/a7f5d6ab88632b3b482fe10611382ff73d14eed7 (v6.3.1)
https://www.ruby-lang.org/en/news/2021/05/02/os-command-injection-in-rdoc/
https://github.com/ruby/ruby/commit/b1c73f239fe9af97de837331849f55d67c27561e (master)
https://github.com/ruby/ruby/commit/483f303d02e768b69e476e0b9be4ab2f26389522 (2.7)

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