CVE-2018-6548

CVE: CVE-2018-6548
Published: 2018-02-02T09:29Z
Vendor: webmproject
Products: libwebm
Versions: 1.0.0.27,
Description Language: en
Description: 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.
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