Packages
- curl - HTTP, HTTPS, and FTP client and client libraries
Details
USN-5079-2 fixed vulnerabilities in curl. One of the fixes introduced a
regression. This update fixes the problem.
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)
USN-5079-2 fixed vulnerabilities in curl. One of the fixes introduced a
regression. This update fixes the problem.
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)
Update instructions
In general, a standard system update will make all the necessary changes.
Learn more about how to get the fixes.The problem can be corrected by updating your system to the following package versions:
| Ubuntu Release | Package Version | ||
|---|---|---|---|
| 16.04 xenial | curl – 7.47.0-1ubuntu2.19+esm2 | ||
| libcurl3 – 7.47.0-1ubuntu2.19+esm2 | |||
| libcurl3-gnutls – 7.47.0-1ubuntu2.19+esm2 | |||
| libcurl3-nss – 7.47.0-1ubuntu2.19+esm2 | |||
| 14.04 trusty | curl – 7.35.0-1ubuntu2.20+esm9 | ||
| libcurl3 – 7.35.0-1ubuntu2.20+esm9 | |||
| libcurl3-gnutls – 7.35.0-1ubuntu2.20+esm9 | |||
| libcurl3-nss – 7.35.0-1ubuntu2.20+esm9 | |||
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