| Name | CVE-2020-8165 |
| Description | A deserialization of untrusted data vulnernerability exists in rails < 5.2.4.3, rails < 6.0.3.1 that can allow an attacker to unmarshal user-provided objects in MemCacheStore and RedisCacheStore potentially resulting in an RCE. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DLA-2251-1, DLA-2282-1, DSA-4766-1 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| rails (PTS) | jessie, jessie (lts) | 2:4.1.8-1+deb8u9 | fixed |
| stretch (security), stretch (lts), stretch | 2:4.2.7.1-1+deb9u5 | fixed | |
| buster (security), buster, buster (lts) | 2:5.2.2.1+dfsg-1+deb10u5 | fixed | |
| bullseye (security), bullseye | 2:6.0.3.7+dfsg-2+deb11u2 | fixed | |
| bookworm | 2:6.1.7.3+dfsg-2~deb12u1 | fixed | |
| sid, trixie | 2:6.1.7.3+dfsg-4 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| rails | source | jessie | 2:4.1.8-1+deb8u7 | DLA-2251-1 | ||
| rails | source | stretch | 2:4.2.7.1-1+deb9u3 | DLA-2282-1 | ||
| rails | source | buster | 2:5.2.2.1+dfsg-1+deb10u2 | DSA-4766-1 | ||
| rails | source | (unstable) | 2:5.2.4.3+dfsg-1 |
https://weblog.rubyonrails.org/2020/5/18/Rails-5-2-4-3-and-6-0-3-1-have-been-released
https://github.com/rails/rails/commit/f7e077f85e61fc0b7381963eda0ceb0e457546b5 (MemCache backend) (5.2)
https://github.com/rails/rails/commit/467e3399c9007996c03ffe3212689d48dd25ae99 (Redis backend) (5.2)
Redis backend introduced in 5.2: https://github.com/rails/rails/commit/9f8ec3535247ac41a9c92e84ddc7a3b771bc318b