GHSA-g98m-96g9-wfjq

Insecure path handling in Bundler

Source: GitHub Advisory Database (reviewed) High CVE-2019-3881

Packages

Ecosystem	Package	Affected	Fixed in
RubyGems	bundler	>= 1.14.0, < 2.1.0	2.1.0

Details

As written in the advisory (Markdown source, shown as plain text).

Bundler prior to 2.1.0 uses a predictable path in `/tmp/`, created with insecure permissions as a storage location for gems, if locations under the user's home directory are not available. If Bundler is used in a scenario where the user does not have a writable home directory, an attacker could place malicious code in this directory that would be later loaded and executed.

References

External links from the advisory. They lead to third-party sites.

https://nvd.nist.gov/vuln/detail/CVE-2019-3881 advisory
https://github.com/rubygems/bundler/issues/6501 web
https://github.com/rubygems/bundler/pull/7416/commits/65cfebb041c454c246aaf32a177b0243915a9998 web
https://bugzilla.redhat.com/show_bug.cgi?id=1651826 web
https://github.com/advisories/GHSA-g98m-96g9-wfjq advisory
https://github.com/rubygems/bundler package
https://github.com/rubysec/ruby-advisory-db/blob/master/gems/bundler/CVE-2019-3881.yml web