A sphinxsearch security update has been released for Debian GNU/Linux 9 LTS to address an issue which allows arbitrary files to be read by abusing a configuration option.

DLA 2882-1: sphinxsearch security update

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Debian LTS Advisory DLA-2882-1 debian-lts@lists.debian.org
  https://www.debian.org/lts/security/ Thorsten Alteholz
January 17, 2022   https://wiki.debian.org/LTS
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Package : sphinxsearch
Version : 2.2.11-1.1+deb9u1
CVE ID : CVE-2020-29050

It was discovered that sphinxsearch, a fast standalone full-text SQL
search engine, could allow arbitrary files to be read by abusing a
configuration option.

For Debian 9 stretch, this problem has been fixed in version
2.2.11-1.1+deb9u1.

We recommend that you upgrade your sphinxsearch packages.

For the detailed security status of sphinxsearch please refer to
its security tracker page at:
  https://security-tracker.debian.org/tracker/sphinxsearch

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