Vulnerabilities > CVE-2019-9718 - Out-of-bounds Read vulnerability in multiple products

047910
CVSS 6.5 - MEDIUM
Attack vector
NETWORK
Attack complexity
LOW
Privileges required
NONE
Confidentiality impact
NONE
Integrity impact
NONE
Availability impact
HIGH
network
low complexity
ffmpeg
debian
canonical
CWE-125
nessus
NVD
Published: 2019-03-12
Updated: 2024-11-21

Summary

In FFmpeg 3.2 and 4.1, a denial of service in the subtitle decoder allows attackers to hog the CPU via a crafted video file in Matroska format, because ff_htmlmarkup_to_ass in libavcodec/htmlsubtitles.c has a complex format argument to sscanf.

Vulnerable Configurations

Part Description Count
Application
Ffmpeg
2
OS
Debian
1
OS
Canonical
3

Common Weakness Enumeration (CWE)

Common Attack Pattern Enumeration and Classification (CAPEC)

  • Overread Buffers
    An adversary attacks a target by providing input that causes an application to read beyond the boundary of a defined buffer. This typically occurs when a value influencing where to start or stop reading is set to reflect positions outside of the valid memory location of the buffer. This type of attack may result in exposure of sensitive information, a system crash, or arbitrary code execution.

Nessus

  • NASL familySuSE Local Security Checks
    NASL idSUSE_SU-2019-3184-1.NASL
    descriptionThis update for ffmpeg fixes the following issues : Security issues fixed : CVE-2019-17542: Fixed a heap-buffer overflow in vqa_decode_chunk due to an out-of-array access (bsc#1154064). CVE-2019-12730: Fixed an uninitialized use of variables due to an improper check (bsc#1137526). CVE-2019-9718: Fixed a denial of service in the subtitle decode (bsc#1129715). CVE-2018-13301: Fixed a denial of service while converting a crafted AVI file to MPEG4 (bsc#1100352). Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
    last seen2020-06-01
    modified2020-06-02
    plugin id131756
    published2019-12-06
    reporterThis script is Copyright (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/131756
    titleSUSE SLED15 / SLES15 Security Update : ffmpeg (SUSE-SU-2019:3184-1)
  • NASL familyUbuntu Local Security Checks
    NASL idUBUNTU_USN-3967-1.NASL
    descriptionIt was discovered that FFmpeg contained multiple security issues when handling certain multimedia files. If a user were tricked into opening a crafted multimedia file, an attacker could cause a denial of service via application crash. Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
    last seen2020-06-01
    modified2020-06-02
    plugin id124678
    published2019-05-07
    reporterUbuntu Security Notice (C) 2019-2020 Canonical, Inc. / NASL script (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/124678
    titleUbuntu 18.04 LTS / 18.10 / 19.04 : FFmpeg vulnerabilities (USN-3967-1)
  • NASL familyDebian Local Security Checks
    NASL idDEBIAN_DSA-4449.NASL
    descriptionSeveral vulnerabilities have been discovered in the FFmpeg multimedia framework, which could result in denial of service or potentially the execution of arbitrary code if malformed files/streams are processed.
    last seen2020-06-01
    modified2020-06-02
    plugin id125344
    published2019-05-23
    reporterThis script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/125344
    titleDebian DSA-4449-1 : ffmpeg - security update

References