USN-5079-3
curl vulnerabilities
USN-5079-1 fixed vulnerabilities in curl. One of the fixes introduced a regression on Ubuntu 18.04 LTS. This update fixes the problem.
We apologize for the inconvenience.
Original advisory details:
It was discovered that curl incorrect handled memory when sending data to an MQTT server. 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)
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)
What each source reports
OSVNo score
curl vulnerabilities
USN-5079-1 fixed vulnerabilities in curl. One of the fixes introduced a regression on Ubuntu 18.04 LTS. This update fixes the problem.
We apologize for the inconvenience.
Original advisory details:
It was discovered that curl incorrect handled memory when sending data to an MQTT server. 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)
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)
- Record
USN-5079-3- Updated
- 2026-11-02
Affected packages
| Package | Affected | Fixed |
|---|---|---|
curlUbuntu:18.04:LTS | before 7.58.0-2ubuntu3.16, plus listed versions 7.55.1-1ubuntu27.55.1-1ubuntu2.17.57.0-1ubuntu17.58.0-2ubuntu17.58.0-2ubuntu2 Show 14 moreShow less7.58.0-2ubuntu37.58.0-2ubuntu3.17.58.0-2ubuntu3.27.58.0-2ubuntu3.37.58.0-2ubuntu3.57.58.0-2ubuntu3.67.58.0-2ubuntu3.77.58.0-2ubuntu3.87.58.0-2ubuntu3.97.58.0-2ubuntu3.107.58.0-2ubuntu3.127.58.0-2ubuntu3.137.58.0-2ubuntu3.147.58.0-2ubuntu3.15 | 7.58.0-2ubuntu3.16 |
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
USN-5079-3 is a vulnerability with no CVSS score yet in curl, published September 21, 2021. No source lists public exploit code. Fixed in curl 7.58.0-2ubuntu3.16.