WebKitGTK through 2.26.4 and WPE WebKit through 2.26.4 (which are the versions right before 2.28.0) contains a memory corruption issue (use-after-free) that may lead to arbitrary code execution. This issue has been fixed in 2.28.0 with improved memory handling.
The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.
Link | Tags |
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https://bugs.webkit.org/show_bug.cgi?id=204342#c21 | permissions required vendor advisory |
https://webkitgtk.org/security/WSA-2020-0003.html | vendor advisory |
https://wpewebkit.org/security/WSA-2020-0003.html | vendor advisory |
https://www.debian.org/security/2020/dsa-4641 | third party advisory vendor advisory |
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GLERWAS2LL7SX2GHA2DDZ2PL3QC5OHIF/ | vendor advisory |
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DOR5LPL4UASVAR76EIHCL4O2KGDWGC6K/ | vendor advisory |
https://usn.ubuntu.com/4310-1/ | third party advisory vendor advisory |
http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00008.html | mailing list third party advisory vendor advisory |
https://security.gentoo.org/glsa/202006-08 | third party advisory vendor advisory |