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Amazon Linux AMI 2: CVE-2021-22925: Security patch for curl (ALAS-2021-1700)

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Amazon Linux AMI 2: CVE-2021-22925: Security patch for curl (ALAS-2021-1700)

Severity
5
CVSS
(AV:N/AC:L/Au:N/C:P/I:N/A:N)
Published
08/05/2021
Created
09/20/2021
Added
09/16/2021
Modified
09/30/2022

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)

  • amazon-linux-ami-2-upgrade-curl
  • amazon-linux-ami-2-upgrade-curl-debuginfo
  • amazon-linux-ami-2-upgrade-libcurl
  • amazon-linux-ami-2-upgrade-libcurl-devel

References

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