A libpano13 security update has been released for Debian GNU/Linux 9 LTS to address a format string vulnerability.

DLA 2624-1: libpano13 security update

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Debian LTS Advisory DLA-2624-1 debian-lts@lists.debian.org
  https://www.debian.org/lts/security/ Utkarsh Gupta
April 12, 2021   https://wiki.debian.org/LTS
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Package : libpano13
Version : 2.9.19+dfsg-2+deb9u1
CVE ID : CVE-2021-20307
Debian Bug : 985249

Format string vulnerability in panoFileOutputNamesCreate() in
libpano13 2.9.20~rc2+dfsg-3 and earlier can lead to read and
write arbitrary memory values.

For Debian 9 stretch, this problem has been fixed in version
2.9.19+dfsg-2+deb9u1.

We recommend that you upgrade your libpano13 packages.

For the detailed security status of libpano13 please refer to
its security tracker page at:
  https://security-tracker.debian.org/tracker/libpano13

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