Rapid7 Vulnerability & Exploit Database

Oracle Linux: (CVE-2023-31147) (Multiple Advisories): c-ares security, bug fix, and enhancement update

Free InsightVM Trial No Credit Card Necessary
2024 Attack Intel Report Latest research by Rapid7 Labs
Back to Search

Oracle Linux: (CVE-2023-31147) (Multiple Advisories): c-ares security, bug fix, and enhancement update

Severity
4
CVSS
(AV:L/AC:M/Au:N/C:P/I:P/A:P)
Published
05/25/2023
Created
06/16/2023
Added
06/15/2023
Modified
11/16/2023

Description

c-ares is an asynchronous resolver library. When /dev/urandom or RtlGenRandom() are unavailable, c-ares uses rand() to generate random numbers used for DNS query ids. This is not a CSPRNG, and it is also not seeded by srand() so will generate predictable output. Input from the random number generator is fed into a non-compilant RC4 implementation and may not be as strong as the original RC4 implementation. No attempt is made to look for modern OS-provided CSPRNGs like arc4random() that is widely available. This issue has been fixed in version 1.19.1.

Solution(s)

  • oracle-linux-upgrade-c-ares
  • oracle-linux-upgrade-c-ares-devel
  • oracle-linux-upgrade-nodejs
  • oracle-linux-upgrade-nodejs-devel
  • oracle-linux-upgrade-nodejs-docs
  • oracle-linux-upgrade-nodejs-full-i18n
  • oracle-linux-upgrade-nodejs-libs
  • oracle-linux-upgrade-nodejs-nodemon
  • oracle-linux-upgrade-nodejs-packaging
  • oracle-linux-upgrade-nodejs-packaging-bundler
  • oracle-linux-upgrade-npm

With Rapid7 live dashboards, I have a clear view of all the assets on my network, which ones can be exploited, and what I need to do in order to reduce the risk in my environment in real-time. No other tool gives us that kind of value and insight.

– Scott Cheney, Manager of Information Security, Sierra View Medical Center

;