Date: Thu, 28 Sep 2023 11:37:23 -0700 From: Alan Coopersmith <alan.coopersmith@...cle.com> To: oss-security@...ts.openwall.com Subject: CVE-2023-5217: Heap buffer overflow in vp8 encoding in libvpx Google has announced another media parsing bug, this time correctly documenting both the base library and Chrome versions affected in the CVE. https://www.cve.org/CVERecord?id=CVE-2023-5217 states: Heap buffer overflow in vp8 encoding in libvpx in Google Chrome prior to 117.0.5938.132 and libvpx 1.13.1 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. (Chromium security severity: High) Unfortunately, the bug report it points to is restricted access still: https://crbug.com/1486441 But the Chrome release notes state: Google is aware that an exploit for CVE-2023-5217 exists in the wild. https://chromereleases.googleblog.com/2023/09/stable-channel-update-for-desktop_27.html Mozilla has put out their own security advisory at https://www.mozilla.org/en-US/security/advisories/mfsa2023-44/ and delivered fixes in Firefox 118.0.1, Firefox ESR 115.3.1, Firefox Focus for Android 118.1, and Firefox for Android 118.1. https://bugzilla.mozilla.org/show_bug.cgi?id=1855550 is also still restricted access. It does not appear that libvpx 1.13.1 has been released yet, but there are two commits in its git repo with the 1486441 bug id listed: https://github.com/webmproject/libvpx/commit/3fbd1dca6a4d2dad332a2110d646e4ffef36d590 https://github.com/webmproject/libvpx/commit/af6dedd715f4307669366944cca6e0417b290282 Mozilla's commit references these two libvpx commit ids as well: https://hg.mozilla.org/mozilla-central/rev/c53f5ef77b62b79af86951a7f9130e1896b695d2 -- -Alan Coopersmith- alan.coopersmith@...cle.com Oracle Solaris Engineering - https://blogs.oracle.com/solaris
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