Vulnerability Details : CVE-2020-10933
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.
Products affected by CVE-2020-10933
- cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*
- cpe:2.3:a:ruby-lang:ruby:*:*:*:*:*:*:*:*
- cpe:2.3:a:ruby-lang:ruby:*:*:*:*:*:*:*:*
- cpe:2.3:a:ruby-lang:ruby:2.7.0:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2020-10933
0.65%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 77 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2020-10933
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
5.0
|
MEDIUM | AV:N/AC:L/Au:N/C:P/I:N/A:N |
10.0
|
2.9
|
NIST | |
|
5.3
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N |
3.9
|
1.4
|
NIST |
CWE ids for CVE-2020-10933
-
The product uses or accesses a resource that has not been initialized.Assigned by: nvd@nist.gov (Primary)
References for CVE-2020-10933
-
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/F4TNVTT66VPRMX5UZYSDGSVRXKKDDDU5/
[SECURITY] Fedora 31 Update: ruby-2.6.6-125.fc31 - package-announce - Fedora Mailing-ListsMailing List;Third Party Advisory
-
https://www.ruby-lang.org/en/news/2020/03/31/heap-exposure-in-socket-cve-2020-10933/
CVE-2020-10933: Heap exposure vulnerability in the socket libraryExploit;Vendor Advisory
-
https://security.netapp.com/advisory/ntap-20200625-0001/
CVE-2020-10933 Ruby Vulnerability in NetApp Products | NetApp Product SecurityThird Party Advisory
-
https://www.debian.org/security/2020/dsa-4721
Debian -- Security Information -- DSA-4721-1 ruby2.5Third Party Advisory
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