CVE-2018-6548

A use-after-free issue was discovered in libwebm through 2018-02-02. If a Vp9HeaderParser was initialized once before, its property frame_ would not be changed because of code in vp9parser::Vp9HeaderParser::SetFrame. Its frame_ could be freed while the corresponding pointer would not be updated, leading to a dangling pointer. This is related to the function OutputCluster in webm_info.cc.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
9.8 CRITICAL
NETWORK
LOW
NONE
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
mitreCNA
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CVEADP
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Base Score
CVSS 3.x
EPSS Score
Percentile: 67%
VendorProductVersion
webmprojectlibwebm
𝑥
≤ 1.0.0.27
𝑥
= Vulnerable software versions
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
chromium-browser
cosmic
ignored
bionic
ignored
artful
ignored
xenial
ignored
trusty
dne
oxide-qt
cosmic
dne
bionic
dne
artful
ignored
xenial
ignored
trusty
dne
Common Weakness Enumeration
References
https://bugs.chromium.org/p/webm/issues/detail?id=1493
https://github.com/dwfault/PoCs/blob/master/libwebm%20Vp9HeaderParser%20UAF%20by%20PrintVP9Info/libwebm%20Vp9HeaderParser%20UAF%20by%20PrintVP9Info.md
https://bugs.chromium.org/p/webm/issues/detail?id=1493
https://github.com/dwfault/PoCs/blob/master/libwebm%20Vp9HeaderParser%20UAF%20by%20PrintVP9Info/libwebm%20Vp9HeaderParser%20UAF%20by%20PrintVP9Info.md