Missing Initialization of Resource

Affecting curl package, versions <7.77.0-r0

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NVD Description

Note: Versions mentioned in the description apply to the upstream curl package. See Remediation section below for Alpine:3.12 relevant versions.

curl 7.7 through 7.76.1 suffers from an information disclosure when the -t command line option, known as CURLOPT_TELNETOPTIONS in libcurl, is used to send variable=content pairs to TELNET servers. Due to a flaw in the option parser for sending NEW_ENV variables, libcurl could be made to pass on uninitialized data from a stack based buffer to the server, resulting in potentially revealing sensitive internal information to the server using a clear-text network protocol.

Remediation

Upgrade Alpine:3.12 curl to version 7.77.0-r0 or higher.

References

CVSS Score

3.1
low severity
  • Attack Vector
    Network
  • Attack Complexity
    High
  • Privileges Required
    None
  • User Interaction
    Required
  • Scope
    Unchanged
  • Confidentiality
    Low
  • Integrity
    None
  • Availability
    None
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N
CVE
CVE-2021-22898
CWE
CWE-909
Snyk ID
SNYK-ALPINE312-CURL-1310974
Disclosed
11 Jun, 2021
Published
28 May, 2021