SB2020072231 - Ubuntu update for ffmpeg
Published: July 22, 2020 Updated: April 23, 2025
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 9 secuirty vulnerabilities.
1) Assertion failure (CVE-ID: CVE-2018-15822)
The vulnerability allows a local attacker to cause DoS condition on the target system.
The vulnerability exists due to insufficient checks for an empty audio packet by the flv_write_packet function, as defined in the libavformat/flvenc.c source code file. A local attacker can access the system and execute a specially crafted application that submits malicious input to trigger an assertion failure and cause the service to crash.
2) NULL pointer dereference (CVE-ID: CVE-2019-11338)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a NULL pointer dereference error when detecting duplicate first slices within libavcodec/hevcdec.c file. A remote attacker can trigger denial of service conditions via crafted HEVC data.
3) Buffer overflow (CVE-ID: CVE-2019-12730)
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error in aa_read_header() function in libavformat/aadec.c. A remote attacker can create a specially crafted media file, trick the victim into opening it, trigger memory corruption and crash the affected application.
4) Heap-based buffer overflow (CVE-ID: CVE-2019-13312)
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error when processing media files in block_cmp() function in libavcodec/zmbvenc.c. A remote attacker can create a specially crafted media file, trick the victim into opening it, trigger heap-based buffer overflow and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
5) Division by zero (CVE-ID: CVE-2019-13390)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.The vulnerability exists due to a divide-by-zero condition in the "adx_write_trailer" function in the "libavformat/rawenc.c" file. A remote attacker can trick the victim to open a specially crafted file and crash the affected application.
6) NULL pointer dereference (CVE-ID: CVE-2019-17539)
The vulnerability allows a remote attacker to compromise the affected system.
The vulnerability exists due to a NULL pointer dereference error within the avcodec_open2 in libavcodec/utils.c in in FFmpeg. A remote attacker can pass specially crafted media content to the affected application and perform a denial of service (DoS) attack or execute arbitrary code on the system.
Successful exploitation of the vulnerability may allows an attacker to compromise the affected system.
7) Heap-based buffer overflow (CVE-ID: CVE-2019-17542)
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error within the vqa_decode_chunk because of an out-of-array access in vqa_decode_init in libavcodec/vqavideo.c. A remote attacker can create a specially crafted file, trick the victim into opening it, trigger heap-based buffer overflow and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
8) Heap-based buffer overflow (CVE-ID: CVE-2020-12284)
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error in "cbs_jpeg_split_fragment" in "libavcodec/cbs_jpeg.c" file during "JPEG_MARKER_SOS" handling. A remote attacker can trigger heap-based buffer overflow and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
9) Use-after-free (CVE-ID: CVE-2020-13904)
The vulnerability allows a remote attacker to compromise vulnerable system.
The vulnerability exists due to a use-after-free error in FFmpeg when processing a crafted EXTINF duration in an m3u8 file because parse_playlist in
libavformat/hls.c frees a pointer, and later that pointer is accessed in
av_probe_input_format3 in libavformat/format.c. A remote attacker can trick the victim to open a specially crafted media file or playlist, trigger a use-after-free error and execute arbitrary code on the target system.
Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.
Remediation
Install update from vendor's website.