Updated libvorbis packages has been released for Debian GNU/Linux 7 LTS

Package : libvorbis
Version : 1.3.2-1.3+deb7u1
CVE ID : CVE-2017-11333 CVE-2017-14632 CVE-2017-14633 CVE-2018-5146

Serious vulnerabilities were found in the libvorbis library, commonly
used to encode and decode audio in OGG containers.

2017-14633

In Xiph.Org libvorbis 1.3.5, an out-of-bounds array read
vulnerability exists in the function mapping0_forward() in
mapping0.c, which may lead to DoS when operating on a crafted
audio file with vorbis_analysis().

2017-14632

Xiph.Org libvorbis 1.3.5 allows Remote Code Execution upon
freeing uninitialized memory in the function
vorbis_analysis_headerout() in info.c when vi->channels