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Ubuntu 16.04 & 14.04 ESM: USN-5079-2 Moderate Curl TLS Issues

ubuntu
Calendar Grey September 15, 2021
Dist Ubuntu Esm H88
Multiple vulnerabilities found in curl necessitate urgent patches for Ubuntu 14.04 and 16.04. Prioritize your updates!
Several security issues were fixed in curl.

Summary

Several security issues were fixed in curl.

Software Description:

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

Details:

USN-5079-1 fixed several vulnerabilities in curl. This update provides

the corresponding update for Ubuntu 14.04 ESM and Ubuntu 16.04 ESM.

Original advisory details:

Patrick Monnerat discovered that curl incorrectly handled upgrades to TLS.

When receiving certain responses from servers, curl would continue without

TLS even when the option to require a successful upgrade to TLS was

specified. (CVE-2021-22946)

Patrick Monnerat discovered that curl incorrectly handled responses

received before STARTTLS. A remote attacker could possibly use this issue

to inject responses and intercept communications. (CVE-2021-22947)

Topics%20covered

Topics Covered

security advisory moderate ubuntu curl library update TLS issue

Update Instructions

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

Ubuntu 16.04 ESM:
  curl                            7.47.0-1ubuntu2.19+esm1
  libcurl3                        7.47.0-1ubuntu2.19+esm1
  libcurl3-gnutls                 7.47.0-1ubuntu2.19+esm1
  libcurl3-nss                    7.47.0-1ubuntu2.19+esm1

Ubuntu 14.04 ESM:
  curl                            7.35.0-1ubuntu2.20+esm8
  libcurl3                        7.35.0-1ubuntu2.20+esm8
  libcurl3-gnutls                 7.35.0-1ubuntu2.20+esm8
  libcurl3-nss                    7.35.0-1ubuntu2.20+esm8

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

References

https://ubuntu.com/security/notices/USN-5079-2

https://ubuntu.com/security/notices/USN-5079-1

CVE-2021-22946, CVE-2021-22947

September 15, 2021

Topics%20covered

Topics Covered

security advisory moderate ubuntu curl library update TLS issue

Package Information

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