Marc Stern discovered that the Apache modproxyhttp module incorrectly handled certain requests. A remote attacker could possibly use this issue to cause Apache to crash, resulting in a denial of service. This issue only affected Ubuntu 20.04 LTS, Ubuntu 20.10, and Ubuntu 21.04. (CVE-2020-13950)
Antonio Morales discovered that the Apache modauthdigest module incorrectly handled certain Digest nonces. A remote attacker could possibly use this issue to cause Apache to crash, resulting in a denial of service. (CVE-2020-35452)
Antonio Morales discovered that the Apache mod_session module incorrectly handled certain Cookie headers. A remote attacker could possibly use this issue to cause Apache to crash, resulting in a denial of service. (CVE-2021-26690)
Christophe Jaillet discovered that the Apache mod_session module incorrectly handled certain SessionHeader values. A remote attacker could use this issue to cause Apache to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2021-26691)
Christoph Anton Mitterer discovered that the new MergeSlashes configuration option resulted in unexpected behaviour in certain situations. (CVE-2021-30641)
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{ "availability": "No subscription required", "binaries": [ { "apache2-suexec-pristine-dbgsym": "2.4.41-4ubuntu3.3", "apache2-suexec-custom": "2.4.41-4ubuntu3.3", "apache2-dev": "2.4.41-4ubuntu3.3", "apache2-bin": "2.4.41-4ubuntu3.3", "apache2-suexec-pristine": "2.4.41-4ubuntu3.3", "apache2-doc": "2.4.41-4ubuntu3.3", "libapache2-mod-md": "2.4.41-4ubuntu3.3", "apache2": "2.4.41-4ubuntu3.3", "apache2-utils-dbgsym": "2.4.41-4ubuntu3.3", "apache2-data": "2.4.41-4ubuntu3.3", "libapache2-mod-proxy-uwsgi": "2.4.41-4ubuntu3.3", "apache2-suexec-custom-dbgsym": "2.4.41-4ubuntu3.3", "apache2-bin-dbgsym": "2.4.41-4ubuntu3.3", "apache2-utils": "2.4.41-4ubuntu3.3", "apache2-ssl-dev": "2.4.41-4ubuntu3.3" } ] }