Out-of-bounds Read in Webmproject Libwebm
CVE-2018-6406
The function ParseVP9SuperFrameIndex in common/libwebm_util.cc in libwebm through 2018-01-30 does not validate the child_frame_length data obtained from a .webm file, which allows remote attackers to cause an information leak or a denial of service (heap-based buffer over-read and later out-of-bounds write), or possibly have unspecified other impact.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.020 (79.9th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 80th percentile — 79.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.020 · newest: 0.020 · change: 0.000
Affected products
Weakness classification (CWE)
References
- bugs.chromium.org/p/webm/issues/detail (Permissions Required)
- github.com/dwfault/PoCs/blob/master/libwebm ParseVP9SuperFrameIndex memory corr… (Broken Link)
Frequently asked questions
- What is CVE-2018-6406?
- CVE-2018-6406 is a high-severity vulnerability in Webmproject Libwebm, classified under Out-of-bounds Read. CVSS score: 8.8/10. Published 2018-01-30.
- How severe is CVE-2018-6406?
- High severity. CVSS v3 base score is 8.8 out of 10.