Vulnerability Monitor

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CVE-2017-1000460

In line libavcodec/h264dec.c:500 in libav(v13_dev0), ffmpeg(n3.4), chromium(56 prior Feb 13, 2017), the return value of init_get_bits is ignored and get_ue_golomb(&gb) is called on an uninitialized get_bits context, which causes a NULL deref exception.

Security Impact Summary

This vulnerability carries a MEDIUM severity rating with a CVSS v3.1 score of 6.5, indicating it can be exploited remotely over the network with relatively low complexity though user interaction is required and does not require pre-existing privileges . The vulnerability impacts and availability (service disruption) for affected systems. Impacting 3 products from libav, from ffmpeg, from google organizations running these solutions should prioritize assessment and patching.

Historical Context

First disclosed in 2018, this vulnerability was reported during a period defined by widespread IoT adoption challenges, mobile security concerns, and the emergence of advanced persistent threat (APT) techniques. Contemporary mitigation strategies focused on secure development practices and third-party component vetting.

Published

2018-01-03T20:29:00.220

Last Modified

2026-06-17T00:59:12.573

Status

Modified

Source

[email protected]

Severity

CVSSv3.0: 6.5 (MEDIUM)

CVSSv2 Vector

AV:N/AC:M/Au:N/C:N/I:N/A:P

Access Vector: NETWORK
Access Complexity: MEDIUM
Authentication: NONE
Confidentiality Impact: NONE
Integrity Impact: NONE
Availability Impact: PARTIAL

Exploitability Score

8.6

Impact Score

2.9

Weaknesses

Type: Primary
CWE-476

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	libav	libav	13_dev0	Yes
Application	ffmpeg	ffmpeg	3.4	Yes
Application	google	chrome	≤ 56.0.2924	Yes

References

https://bugzilla.libav.org/show_bug.cgi?id=952 Exploit, Issue Tracking, Third Party Advisory ([email protected])
https://chromium.googlesource.com/chromium/third_party/ffmpeg/+/8e313ca08800178efce00045e07dc494d437b70c Issue Tracking, Patch ([email protected])
https://lists.debian.org/debian-lts-announce/2019/03/msg00041.html ([email protected])
https://lists.ffmpeg.org/pipermail/ffmpeg-cvslog/2017-January/104221.html Issue Tracking, Patch ([email protected])
https://bugzilla.libav.org/show_bug.cgi?id=952 Exploit, Issue Tracking, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://chromium.googlesource.com/chromium/third_party/ffmpeg/+/8e313ca08800178efce00045e07dc494d437b70c Issue Tracking, Patch (af854a3a-2127-422b-91ae-364da2661108)
https://lists.debian.org/debian-lts-announce/2019/03/msg00041.html (af854a3a-2127-422b-91ae-364da2661108)
https://lists.ffmpeg.org/pipermail/ffmpeg-cvslog/2017-January/104221.html Issue Tracking, Patch (af854a3a-2127-422b-91ae-364da2661108)

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For libav's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.