CVE-2021-22876

Publication date 31 March 2021

Last updated 24 July 2024


Ubuntu priority

Cvss 3 Severity Score

5.3 · Medium

Score breakdown

curl 7.1.1 to and including 7.75.0 is vulnerable to an "Exposure of Private Personal Information to an Unauthorized Actor" by leaking credentials in the HTTP Referer: header. libcurl does not strip off user credentials from the URL when automatically populating the Referer: HTTP request header field in outgoing HTTP requests, and therefore risks leaking sensitive data to the server that is the target of the second HTTP request.

Read the notes from the security team

Status

Package Ubuntu Release Status
curl 21.04 hirsute
Fixed 7.74.0-1ubuntu2
20.10 groovy
Fixed 7.68.0-1ubuntu4.3
20.04 LTS focal
Fixed 7.68.0-1ubuntu2.5
18.04 LTS bionic
Fixed 7.58.0-2ubuntu3.13
16.04 LTS xenial
Fixed 7.47.0-1ubuntu2.19
14.04 LTS trusty

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Notes


alexmurray

affects curl versions between 7.1.1 and 7.75.0

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