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CVE-2021-22925

Publication date 21 July 2021

Last updated 24 July 2024

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

5.3 · Medium

Score breakdown

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.

Read the notes from the security team

Status

Package Ubuntu Release Status
curl 23.04 lunar
Fixed 7.74.0-1.2ubuntu4
22.10 kinetic
Fixed 7.74.0-1.2ubuntu4
22.04 LTS jammy
Fixed 7.74.0-1.2ubuntu4
21.10 impish
Fixed 7.74.0-1.2ubuntu4
21.04 hirsute
Fixed 7.74.0-1ubuntu2.1
20.10 groovy Ignored end of life
20.04 LTS focal
Fixed 7.68.0-1ubuntu2.6
18.04 LTS bionic
Fixed 7.58.0-2ubuntu3.14
16.04 LTS xenial
14.04 LTS trusty

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Notes

mdeslaur

caused by incomplete fix for CVE-2021-22898

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package Patch details
curl

Severity score breakdown

Parameter Value
Base score 5.3 · Medium
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality Low
Integrity impact None
Availability impact None
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

References

Related Ubuntu Security Notices (USN)

Other references