QID 198508

Date Published: 2021-09-28

QID 198508: Ubuntu Security Notification for curl Vulnerabilities (USN-5079-3)

Usn-5079-1 fixed vulnerabilities in curlcurl incorrect handled memory when sending data to an mqtt server.
Curl incorrectly handled upgrades to tls.
Curl incorrectly handled responses received before starttls.

Note: The preceding description block is extracted directly from the security advisory. Using automation, we have attempted to clean and format it as much as possible without introducing additional issues.

one of the fixes introduced a regression on ubuntu 18.04 lts.
This update fixes the problem.
A remote attacker could use this issue to cause curl to crash, resulting in a denial of service, or possibly execute arbitrary code. (
Cve-2021-22945).
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).
A remote attacker could possibly use this issue to inject responses and intercept communications. (
Cve-2021-22947).

CVSS V3 rated as Medium - 4.2 severity.

CVSS V2 rated as Medium - 5.4 severity.

Solution

Refer to Ubuntu advisory: USN-5079-3 for affected packages and patching details, or update with your package manager.

Vendor References

USN-5079-3 - ubuntu.com/security/notices/USN-5079-3

CVEs related to QID 198508

Software Advisories

Advisory ID	Software	Component	Link
USN-5079-3	Ubuntu Linux		ubuntu.com/security/notices/USN-5079-3

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