THREATPORT/VULNERABILITY/CVE-2018-19857
CRITICAL SEVERITY

CVE-2018-19857

Vlc Media Player vulnerability

CVSS
9.1
EPSS
3.9%
EPSS pct
89th
Exploited
No known
The CAF demuxer in modules/demux/caf.c in VideoLAN VLC media player 3.0.4 may read memory from an uninitialized pointer when processing magic cookies in CAF files, because a ReadKukiChunk() cast converts a return value to an unsigned int even if that value is negative. This could result in a denial of service and/or a potential infoleak.
Affected vendor
Videolan
Affected product
Vlc Media Player
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
Weakness type (CWE)
  • CWE-824 — Access of Uninitialized Pointer
Published
2018-12-05

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring no privileges, no user interaction. Successful exploitation leads to high impact to confidentiality, high impact to availability.

Its EPSS score of 3.9% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 89% of all scored CVEs.

Check your external exposure to CVE-2018-19857

  • Confirm whether Videolan Vlc Media Player is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2018-19857.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2018-19857

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2018-19857 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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