Debian LTS: Security Advisory for ffmpeg (DLA-2818-1)

The remote host is missing an update for the 'ffmpeg' package(s) announced via the DLA-2818-1 advisory.

Multiple issues have been discovered in ffmpeg - tools for transcoding, streaming and playing of multimedia files. CVE-2020-20445 Divide By Zero issue via libavcodec/lpc.h, which allows a remote malicious user to cause a Denial of Service. CVE-2020-20446 Divide By Zero issue via libavcodec/aacpsy.c, which allows a remote malicious user to cause a Denial of Service. CVE-2020-20451 Denial of Service issue due to resource management errors via fftools/cmdutils.c. CVE-2020-20453 Divide By Zero issue via libavcodec/aaccoder, which allows a remote malicious user to cause a Denial of Service. CVE-2020-22037 A Denial of Service vulnerability due to a memory leak in avcodec_alloc_context3 at options.c CVE-2020-22041 A Denial of Service vulnerability due to a memory leak in the av_buffersrc_add_frame_flags function in buffersrc. CVE-2020-22044 A Denial of Service vulnerability due to a memory leak in the url_open_dyn_buf_internal function in libavformat/aviobuf.c. CVE-2020-22046 A Denial of Service vulnerability due to a memory leak in the avpriv_float_dsp_allocl function in libavutil/float_dsp.c. CVE-2020-22048 A Denial of Service vulnerability due to a memory leak in the ff_frame_pool_get function in framepool.c. CVE-2020-22049 A Denial of Service vulnerability due to a memory leak in the wtvfile_open_sector function in wtvdec.c. CVE-2020-22054 A Denial of Service vulnerability due to a memory leak in the av_dict_set function in dict.c. CVE-2021-38171 adts_decode_extradata in libavformat/adtsenc.c does not check the init_get_bits return value, which is a necessary step because the second argument to init_get_bits can be crafted. CVE-2021-38291 Assertion failure at src/libavutil/mathematics.c, causing ffmpeg aborted is detected. In some extrme cases, like with adpcm_ms samples with an extremely high channel count, get_audio_frame_duration() may return a negative frame duration value.

'ffmpeg' package(s) on Debian Linux.

Checks if a vulnerable package version is present on the target host.

For Debian 9 stretch, these problems have been fixed in version 7:3.2.16-1+deb9u1. We recommend that you upgrade your ffmpeg packages.