Exploit/Advisories

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Ubuntu Security Notice USN-5397-1
April 28, 2022

curl vulnerabilities
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A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 22.04 LTS
- Ubuntu 21.10
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS

Summary:

Several security issues were fixed in curl.

Software Description:
- curl: HTTP, HTTPS, and FTP client and client libraries

Details:

Patrick Monnerat discovered that curl incorrectly handled certain OAUTH2.
An attacker could possibly use this issue to access sensitive information.
(CVE-2022-22576)

Harry Sintonen discovered that curl incorrectly handled certain requests.
An attacker could possibly use this issue to expose sensitive information.
(CVE-2022-27774, CVE-2022-27775, CVE-2022-27776)

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 22.04 LTS:
curl 7.81.0-1ubuntu1.1
libcurl3-gnutls 7.81.0-1ubuntu1.1
libcurl3-nss 7.81.0-1ubuntu1.1
libcurl4 7.81.0-1ubuntu1.1

Ubuntu 21.10:
curl 7.74.0-1.3ubuntu2.1
libcurl3-gnutls 7.74.0-1.3ubuntu2.1
libcurl3-nss 7.74.0-1.3ubuntu2.1
libcurl4 7.74.0-1.3ubuntu2.1

Ubuntu 20.04 LTS:
curl 7.68.0-1ubuntu2.10
libcurl3-gnutls 7.68.0-1ubuntu2.10
libcurl3-nss 7.68.0-1ubuntu2.10
libcurl4 7.68.0-1ubuntu2.10

Ubuntu 18.04 LTS:
curl 7.58.0-2ubuntu3.17
libcurl3-gnutls 7.58.0-2ubuntu3.17
libcurl3-nss 7.58.0-2ubuntu3.17
libcurl4 7.58.0-2ubuntu3.17

In general, a standard system update will make all the necessary changes.

References:
https://ubuntu.com/security/notices/USN-5397-1
CVE-2022-22576, CVE-2022-27774, CVE-2022-27775, CVE-2022-27776

Package Information:
https://launchpad.net/ubuntu/+source/curl/7.81.0-1ubuntu1.1
https://launchpad.net/ubuntu/+source/curl/7.74.0-1.3ubuntu2.1
https://launchpad.net/ubuntu/+source/curl/7.68.0-1ubuntu2.10
https://launchpad.net/ubuntu/+source/curl/7.58.0-2ubuntu3.17

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