Debian 9 Stretch: DLA-3058-1 Critical Libsndfile Denial of Service

Two issues have been found in libsndfile, a library for reading/writing
audio files.

CVE-2017-12562

Due to a possible heap buffer overflow attack in an attacker could
cause a remote denial of service attack by tricking the function into
outputting a largeamount of data.

CVE-2021-4156

Using a crafted FLAC file, an attacker could trigger an out-of-bounds
read that would most likely cause a crash but could potentially leak
memory information.


For Debian 9 stretch, these problems have been fixed in version
1.0.27-3+deb9u3.

We recommend that you upgrade your libsndfile packages.

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

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