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Oracle Linux: (CVE-2021-22925) ELSA-2021-4511: curl security and bug fix update

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Oracle Linux: (CVE-2021-22925) ELSA-2021-4511: curl security and bug fix update

Severity
5
CVSS
(AV:N/AC:L/Au:N/C:P/I:N/A:N)
Published
07/21/2021
Created
11/19/2021
Added
11/17/2021
Modified
11/23/2022

Description

curl supports the `-t` command line option, known as `CURLOPT_TELNETOPTIONS`in libcurl. This rarely used option is used to send variable=content pairs toTELNET servers.Due to flaw in the option parser for sending `NEW_ENV` variables, libcurlcould be made to pass on uninitialized data from a stack based buffer to theserver. Therefore potentially revealing sensitive internal information to theserver using a clear-text network protocol.This could happen because curl did not call and use sscanf() correctly whenparsing the string provided by the application.

Solution(s)

  • oracle-linux-upgrade-curl
  • oracle-linux-upgrade-libcurl
  • oracle-linux-upgrade-libcurl-devel
  • oracle-linux-upgrade-libcurl-minimal

References

  • ELSA-2021-4511
  • CVE-2021-22925
  • USN-5021-1
  • USN-5021-2

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