Use of Uninitialized Resource Affecting ruby2.5 package, versions <2.5.8-4.11.1
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Test your applications- Snyk ID SNYK-SLES151-RUBY25-2712777
- published 14 Apr 2022
- disclosed 15 Apr 2020
Introduced: 15 Apr 2020
CVE-2020-10933 Open this link in a new tabHow to fix?
Upgrade SLES:15.1 ruby2.5 to version 2.5.8-4.11.1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream ruby2.5 package and not the ruby2.5 package as distributed by SLES.
See How to fix? for SLES:15.1 relevant fixed versions and status.
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#read_nonblock(requested_size, 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://www.suse.com/security/cve/CVE-2020-10933.html
- https://bugzilla.suse.com/1168938
- https://www.ruby-lang.org/en/news/2020/03/31/heap-exposure-in-socket-cve-2020-10933/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/F4TNVTT66VPRMX5UZYSDGSVRXKKDDDU5/
- https://security.netapp.com/advisory/ntap-20200625-0001/
- https://www.debian.org/security/2020/dsa-4721
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/F4TNVTT66VPRMX5UZYSDGSVRXKKDDDU5/