CVE-2019-8320GHSA-5X32-C9MF-49CC
A Directory Traversal issue was discovered in RubyGems 2.7.6 and later through 3.0.2.
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Fix
- Fixed in 2.7.9, 3.0.3
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
Summary
A Directory Traversal issue was discovered in RubyGems 2.7.6 and later through 3.0.2. Before making new directories or touching files (which now include path-checking code for symlinks), it would delete the target destination. If that destination was hidden behind a symlink, a malicious gem could delete arbitrary files on the user's machine, presuming the attacker could guess at paths. Given how frequently gem is run as sudo, and how predictable paths are on modern systems (/tmp, /usr, etc.), this could likely lead to data loss or an unusable system.
Timeline
- CVE published
- Record last updated
Affected versions
- n/a n/a
Version range not reported
- rubygems-updateRubyGems
From 2.7.6 · fixed in 2.7.9
- rubygems-updateRubyGems
From 3.0.0 · fixed in 3.0.3