CVE-2020-10018

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.

Weakness

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 Any operations using the original pointer are no longer valid because the memory “belongs” to the code that operates on the new pointer.

Affected Software

Potential Mitigations

References

• http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00008.html
• https://bugs.webkit.org/show_bug.cgi?id=204342#c21
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DOR5LPL4UASVAR76EIHCL4O2KGDWGC6K/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GLERWAS2LL7SX2GHA2DDZ2PL3QC5OHIF/
• https://security.gentoo.org/glsa/202006-08
• https://usn.ubuntu.com/4310-1/
• https://webkitgtk.org/security/WSA-2020-0003.html
• https://wpewebkit.org/security/WSA-2020-0003.html
• https://www.debian.org/security/2020/dsa-4641
• http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00008.html
• https://bugs.webkit.org/show_bug.cgi?id=204342#c21
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DOR5LPL4UASVAR76EIHCL4O2KGDWGC6K/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GLERWAS2LL7SX2GHA2DDZ2PL3QC5OHIF/
• https://security.gentoo.org/glsa/202006-08
• https://usn.ubuntu.com/4310-1/
• https://webkitgtk.org/security/WSA-2020-0003.html
• https://wpewebkit.org/security/WSA-2020-0003.html
• https://www.debian.org/security/2020/dsa-4641