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CVE-2021-22946

Status Candidate

Overview

This candidate has been reserved by an organization or individual that will use it when announcing a new security problem. When the candidate has been publicized, the details for this candidate will be provided.

Related Files

Ubuntu Security Notice USN-5079-4
Posted Sep 21, 2021
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 5079-4 - USN-5079-2 fixed vulnerabilities in curl. One of the fixes introduced a regression. This update fixes the problem. 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. Various other issues were also addressed.

tags | advisory, vulnerability
systems | linux, ubuntu
advisories | CVE-2021-22946, CVE-2021-22947
MD5 | 1f1499ce64825094c67e05b575440d0b
Ubuntu Security Notice USN-5079-3
Posted Sep 21, 2021
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 5079-3 - USN-5079-1 fixed vulnerabilities in curl. One of the fixes introduced a regression on Ubuntu 18.04 LTS. This update fixes the problem. 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. 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. 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. Various other issues were also addressed.

tags | advisory, remote, denial of service, arbitrary, vulnerability
systems | linux, ubuntu
advisories | CVE-2021-22945, CVE-2021-22946, CVE-2021-22947
MD5 | d613fd1d8b4c7978549014ab03c1cdd7
Ubuntu Security Notice USN-5079-2
Posted Sep 15, 2021
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 5079-2 - USN-5079-1 fixed several vulnerabilities in curl. This update provides the corresponding update for Ubuntu 14.04 ESM and Ubuntu 16.04 ESM. 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. 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. Various other issues were also addressed.

tags | advisory, remote, vulnerability
systems | linux, ubuntu
advisories | CVE-2021-22946, CVE-2021-22947
MD5 | 8dc34c18f171dde2c9ffa8935bcbe7c4
Ubuntu Security Notice USN-5079-1
Posted Sep 15, 2021
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 5079-1 - 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. 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. Various other issues were also addressed.

tags | advisory, remote, denial of service, arbitrary
systems | linux, ubuntu
advisories | CVE-2021-22945, CVE-2021-22946, CVE-2021-22947
MD5 | 86a50e5b74b582a69ac5dae745acba84
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