CVE-2017-0903 describes a critical remote code execution vulnerability affecting RubyGems versions 2.0.0 through 2.6.13, impacting distributions like Canonical, Debian, and Red Hat. This flaw stems from improper YAML deserialization of gem specifications, allowing attackers to bypass class whitelists with specially crafted serialized objects. With a CVSS score of 9.8 (Critical), it presents a severe risk due to its network-based attack vector, low attack complexity, and high potential for confidentiality, integrity, and availability compromise. While there is no evidence of active exploitation or public exploit code (Metasploit, Nuclei, ExploitDB), the vulnerability has garnered some community discussion and media coverage, indicating awareness despite its inactive status on the CISA KEV catalog.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
2.0.0CPE matchmatch criteria | cpe:2.3:a:rubygems:rubygems:2.0.0:*:*:*:*:*:*:* | ||
2.0.0CPE matchmatch criteria | cpe:2.3:a:rubygems:rubygems:2.0.0:preview2:*:*:*:*:*:* | ||
2.0.0CPE matchmatch criteria | cpe:2.3:a:rubygems:rubygems:2.0.0:preview2.1:*:*:*:*:*:* | ||
2.0.0CPE matchmatch criteria | cpe:2.3:a:rubygems:rubygems:2.0.0:preview2.2:*:*:*:*:*:* | ||
2.0.0CPE matchmatch criteria | cpe:2.3:a:rubygems:rubygems:2.0.0:rc1:*:*:*:*:*:* |
CVSS version used by this source: 3.0
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.