USN-4458-1

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USN-4458-1

Summary: apache2 vulnerabilities

Details: Fabrice Perez discovered that the Apache mod_rewrite module incorrectly handled certain redirects. A remote attacker could possibly use this issue to perform redirects to an unexpected URL. (CVE-2020-1927) Chamal De Silva discovered that the Apache mod_proxy_ftp module incorrectly handled memory when proxying to a malicious FTP server. A remote attacker could possibly use this issue to obtain sensitive information. (CVE-2020-1934) Felix Wilhelm discovered that the HTTP/2 implementation in Apache did not properly handle certain Cache-Digest headers. A remote attacker could possibly use this issue to cause Apache to crash, resulting in a denial of service. This issue only affected Ubuntu 18.04 LTS and Ubuntu 20.04 LTS. (CVE-2020-9490) Felix Wilhelm discovered that the Apache mod_proxy_uwsgi module incorrectly handled large headers. A remote attacker could use this issue to obtain sensitive information or possibly execute arbitrary code. This issue only affected Ubuntu 20.04 LTS. (CVE-2020-11984) Felix Wilhelm discovered that the HTTP/2 implementation in Apache did not properly handle certain logging statements. A remote attacker could possibly use this issue to cause Apache to crash, resulting in a denial of service. This issue only affected Ubuntu 18.04 LTS and Ubuntu 20.04 LTS. (CVE-2020-11993)

References: https://ubuntu.com/security/notices/USN-4458-1, https://ubuntu.com/security/CVE-2020-1927, https://ubuntu.com/security/CVE-2020-1934, https://ubuntu.com/security/CVE-2020-9490, https://ubuntu.com/security/CVE-2020-11984, https://ubuntu.com/security/CVE-2020-11993