HOMEVULNERABILITIESCVE-2019-11338
HIGH

CVE-2019-11338

CWE-476Published: April 19, 2019· Updated: Jun 17, 2026

8.8
CVSS v3.1

Official Description

libavcodec/hevcdec.c in FFmpeg 3.4 and 4.1.2 mishandles detection of duplicate first slices, which allows remote attackers to cause a denial of service (NULL pointer dereference and out-of-array access) or possibly have unspecified other impact via crafted HEVC data.

NVD Source

Technical Analysis

CVE-2019-11338 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation does not require any privileges, though user interaction (Required) is needed, which slightly reduces the risk of mass automated attacks.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 8.8.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionRequired
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected Vendors & Products

Canonical1 product(s)
ubuntu linux
Debian1 product(s)
debian linux
ffmpeg1 product(s)
ffmpeg
novell1 product(s)
suse package hub for suse linux enterprise
Source: NVD CPE · 10 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://github.com/FFmpeg/FFmpeg/commit/54655623a82632e7624714d7b2a3e039dc5faa7e
PATCHhttps://github.com/FFmpeg/FFmpeg/commit/9ccc633068c6fe76989f487c8932bd11886ad65b
PATCHhttps://github.com/FFmpeg/FFmpeg/commit/54655623a82632e7624714d7b2a3e039dc5faa7e
PATCHhttps://github.com/FFmpeg/FFmpeg/commit/9ccc633068c6fe76989f487c8932bd11886ad65b
ADVISORYhttp://lists.opensuse.org/opensuse-security-announce/2020-01/msg00012.html
ADVISORYhttps://lists.debian.org/debian-lts-announce/2019/05/msg00043.html
ADVISORYhttps://seclists.org/bugtraq/2019/May/60
ADVISORYhttps://usn.ubuntu.com/3967-1/
ADVISORYhttps://usn.ubuntu.com/4431-1/
ADVISORYhttps://www.debian.org/security/2019/dsa-4449
ADVISORYhttp://lists.opensuse.org/opensuse-security-announce/2020-01/msg00012.html
ADVISORYhttps://lists.debian.org/debian-lts-announce/2019/05/msg00043.html
ADVISORYhttps://seclists.org/bugtraq/2019/May/60
ADVISORYhttps://usn.ubuntu.com/3967-1/
ADVISORYhttps://usn.ubuntu.com/4431-1/
ADVISORYhttps://www.debian.org/security/2019/dsa-4449

All References (18)

→
http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00012.htmlMailing List · Third Party Advisory
→
http://www.securityfocus.com/bid/108034Broken Link
→
https://github.com/FFmpeg/FFmpeg/commit/54655623a82632e7624714d7b2a3e039dc5faa7ePatch · Third Party Advisory
→
https://github.com/FFmpeg/FFmpeg/commit/9ccc633068c6fe76989f487c8932bd11886ad65bPatch · Third Party Advisory
→
https://lists.debian.org/debian-lts-announce/2019/05/msg00043.htmlMailing List · Third Party Advisory
→
https://seclists.org/bugtraq/2019/May/60Mailing List · Third Party Advisory
→
https://usn.ubuntu.com/3967-1/Third Party Advisory
→
https://usn.ubuntu.com/4431-1/Third Party Advisory
→
https://www.debian.org/security/2019/dsa-4449Third Party Advisory
→
http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00012.htmlMailing List · Third Party Advisory
→
http://www.securityfocus.com/bid/108034Broken Link
→
https://github.com/FFmpeg/FFmpeg/commit/54655623a82632e7624714d7b2a3e039dc5faa7ePatch · Third Party Advisory
→
https://github.com/FFmpeg/FFmpeg/commit/9ccc633068c6fe76989f487c8932bd11886ad65bPatch · Third Party Advisory
→
https://lists.debian.org/debian-lts-announce/2019/05/msg00043.htmlMailing List · Third Party Advisory
→
https://seclists.org/bugtraq/2019/May/60Mailing List · Third Party Advisory

Quick Facts

CVE IDCVE-2019-11338
CVSS Score8.8 / 10
SeverityHIGH
WeaknessCWE-476
CISA KEVNo
Affected4 vendor(s)
PublishedApr 19, 2019

Related CVEs (CWE-476)

CVE-2022-36648
10.0
CVE-2010-2495
10.0
CVE-2023-47003
9.8
CVE-2023-31129
9.8
CVE-2023-23087
9.8
CVE-2023-46427
9.8

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2019-11338 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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