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Ubuntu 22.04 LTS USN-6237-2: Curl Regression Correction Details

ubuntu
Calendar Grey July 19, 2023
Dist Ubuntu Esm H88
Ubuntu Security Advisory USN-6237-2 details a curl issue impacting Ubuntu 22.04, addressing critical vulnerabilities.
USN-6237-1 introduced a regression in curl.

Summary

USN-6237-1 introduced a regression in curl.

Software Description:

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

Details:

USN-6237-1 fixed vulnerabilities in curl. The update caused a certificate

wildcard handling regression on Ubuntu 22.04 LTS. This update fixes the

problem.

We apologize for the inconvenience.

Original advisory details:

Hiroki Kurosawa discovered that curl incorrectly handled validating certain

certificate wildcards. A remote attacker could possibly use this issue to

spoof certain website certificates using IDN hosts. (CVE-2023-28321)

Hiroki Kurosawa discovered that curl incorrectly handled callbacks when

certain options are set by applications. This could cause applications

using curl to misbehave, resulting in information disclosure, or a denial

of service. (CVE-2023-28322)

It was discovered that curl incorrectly handled saving cookies to files. A

local attacker could possibly use this issue to create o...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory software update DoS Ubuntu curl regression certificate handling

Update Instructions

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

Ubuntu 22.04 LTS:
   curl                            7.81.0-1ubuntu1.13
   libcurl3-gnutls                 7.81.0-1ubuntu1.13
   libcurl3-nss                    7.81.0-1ubuntu1.13
   libcurl4                        7.81.0-1ubuntu1.13

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

References

https://ubuntu.com/security/notices/USN-6237-2

https://ubuntu.com/security/notices/USN-6237-1

https://bugs.launchpad.net/ubuntu/+source/curl/+bug/2028170

Severity
important
Lowest
Low
Medium
High
Critical

July 19, 2023

Topics%20covered

Topics Covered

security advisory software update DoS Ubuntu curl regression certificate handling

Package Information

https://launchpad.net/ubuntu/+source/curl/7.81.0-1ubuntu1.13

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