CVE-2021-22876
Published: 31 March 2021
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.
Notes
| Author | Note |
|---|---|
| alexmurray | affects curl versions between 7.1.1 and 7.75.0 |
Priority
Status
| Package | Release | Status |
|---|---|---|
|
curl Launchpad, Ubuntu, Debian |
bionic |
Released
(7.58.0-2ubuntu3.13)
|
| focal |
Released
(7.68.0-1ubuntu2.5)
|
|
| groovy |
Released
(7.68.0-1ubuntu4.3)
|
|
| hirsute |
Released
(7.74.0-1ubuntu2)
|
|
| trusty |
Released
(7.35.0-1ubuntu2.20+esm7)
|
|
| upstream |
Needs triage
|
|
| xenial |
Released
(7.47.0-1ubuntu2.19)
|
|
|
Patches: vendor: https://curl.se/XOXep4o2CSG0.patch |
||
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 5.3 |
| 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 |