CVE-2022-27781
Published: 11 May 2022
libcurl provides the `CURLOPT_CERTINFO` option to allow applications torequest details to be returned about a server's certificate chain.Due to an erroneous function, a malicious server could make libcurl built withNSS get stuck in a never-ending busy-loop when trying to retrieve thatinformation. Due to an erroneous function, a malicious server could make libcurl built with NSS get stuck in a never-ending busy-loop when trying to retrieve that information.]
Notes
| Author | Note |
|---|---|
| alexmurray | Affects curl versions 7.34.0 up to and include 7.83.0 |
Mitigation
Do not use the `CURLOPT_CERTINFO` option
Priority
Status
| Package | Release | Status |
|---|---|---|
|
curl Launchpad, Ubuntu, Debian |
bionic |
Released
(7.58.0-2ubuntu3.18)
|
| focal |
Released
(7.68.0-1ubuntu2.11)
|
|
| impish |
Released
(7.74.0-1.3ubuntu2.2)
|
|
| jammy |
Released
(7.81.0-1ubuntu1.2)
|
|
| trusty |
Released
(7.35.0-1ubuntu2.20+esm11)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only) |
|
| upstream |
Released
(7.83.1)
|
|
| xenial |
Released
(7.47.0-1ubuntu2.19+esm4)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only) |
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 7.5 |
| Attack vector | Network |
| Attack complexity | Low |
| Privileges required | None |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | None |
| Integrity impact | None |
| Availability impact | High |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |