CVE-2020-10933
- Source
- https://cve.org/CVERecord?id=CVE-2020-10933
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2020-10933.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2020-10933
- Aliases
- Downstream
- Related
- Published
- 2020-05-04T15:15:13.963Z
- Modified
- 2026-02-24T11:33:46.449918Z
- Severity
-
- 5.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N CVSS Calculator
- Summary
- [none]
- Details
-
An issue was discovered in Ruby 2.5.x through 2.5.7, 2.6.x through 2.6.5, and 2.7.0. If a victim calls BasicSocket#readnonblock(requestedsize, buffer, exception: false), the method resizes the buffer to fit the requested size, but no data is copied. Thus, the buffer string provides the previous value of the heap. This may expose possibly sensitive data from the interpreter.
- References
-
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/F4TNVTT66VPRMX5UZYSDGSVRXKKDDDU5/
- https://security.netapp.com/advisory/ntap-20200625-0001/
- https://www.debian.org/security/2020/dsa-4721
- https://www.ruby-lang.org/en/news/2020/03/31/heap-exposure-in-socket-cve-2020-10933/
- https://www.ruby-lang.org/en/news/2020/03/31/heap-exposure-in-socket-cve-2020-10933/
Affected packages
Git / github.com/ruby/ruby
Git / gitlab.gnome.org/GNOME/libxml2
Affected ranges
- Type
- GIT
- Repo
- https://gitlab.gnome.org/GNOME/libxml2
- Events
-
Introduced0 Unknown introduced commit / All previous commits are affectedLast affectedIntroducedLast affected