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Debian LTS Advisory DLA-2706-1                [email protected]
https://www.debian.org/lts/security/               Emilio Pozuelo Monfort
July 09, 2021                                 https://wiki.debian.org/LTS
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Package        : apache2
Version        : 2.4.25-3+deb9u10
CVE ID         : CVE-2020-1927 CVE-2020-1934 CVE-2020-35452 CVE-2021-26690 
                 CVE-2021-26691 CVE-2021-30641 CVE-2021-31618

Several vulnerabilities have been found in the Apache HTTP server, which
could result in denial of service. In addition the implementation of
the MergeSlashes option could result in unexpected behaviour.

For Debian 9 stretch, these problems have been fixed in version

We recommend that you upgrade your apache2 packages.

For the detailed security status of apache2 please refer to
its security tracker page at:

Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS