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
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https://www.ruby-lang.org/en/news/2020/03/31/heap-exposure-in-socket-cve-2020-10933/ | Exploit Vendor Advisory |
https://security.netapp.com/advisory/ntap-20200625-0001/ | Third Party Advisory |
https://www.debian.org/security/2020/dsa-4721 | Third Party Advisory |
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/F4TNVTT66VPRMX5UZYSDGSVRXKKDDDU5/ |
Configurations
Configuration 1 (hide)
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Configuration 2 (hide)
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Configuration 3 (hide)
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History
07 Nov 2023, 03:14
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Information
Published : 2020-05-04 15:15
Updated : 2023-11-07 03:14
NVD link : CVE-2020-10933
Mitre link : CVE-2020-10933
JSON object : View
Products Affected
linux
- linux_kernel
ruby-lang
- ruby
debian
- debian_linux
fedoraproject
- fedora
CWE
CWE-908
Use of Uninitialized Resource