Google · Chromium libvpx
CVE-2023-5217
Google Chromium libvpx Heap Buffer Overflow Vulnerability
What it is
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)
CISA: Google Chromium libvpx contains a heap buffer overflow vulnerability in vp8 encoding that allows a remote attacker to potentially exploit heap corruption via a crafted HTML page. This vulnerability could impact web browsers using libvpx, including but not limited to Google Chrome.
What to do
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Deadline for US federal agencies: October 23, 2023
- Added to the CISA list
- October 2, 2023
- Published
- September 28, 2023
- Severity
- High 8.8 CVSS 3.1
- Chance of attacks in the next 30 days (EPSS)
- 49% in the top 1.1% of all known vulnerabilities
- Weakness
- CWE-787
- More details
- NVD · CVE.org · CISA
All references (20)
- https://chromereleases.googleblog.com/2023/09/stable-channel-update-for-desktop_27.html
- https://crbug.com/1486441
- http://www.openwall.com/lists/oss-security/2023/09/28/5
- http://www.openwall.com/lists/oss-security/2023/09/28/6
- http://www.openwall.com/lists/oss-security/2023/09/29/1
- http://www.openwall.com/lists/oss-security/2023/09/29/2
- http://www.openwall.com/lists/oss-security/2023/09/29/7
- http://www.openwall.com/lists/oss-security/2023/09/29/9
- https://www.mozilla.org/en-US/security/advisories/mfsa2023-44/
- https://security-tracker.debian.org/tracker/CVE-2023-5217
- https://bugzilla.redhat.com/show_bug.cgi?id=2241191
- https://stackdiary.com/google-discloses-a-webm-vp8-bug-tracked-as-cve-2023-5217/
- https://www.openwall.com/lists/oss-security/2023/09/28/5
- https://pastebin.com/TdkC4pDv
- https://github.com/webmproject/libvpx/commit/3fbd1dca6a4d2dad332a2110d646e4ffef36d590
- https://github.com/webmproject/libvpx/commit/af6dedd715f4307669366944cca6e0417b290282
- https://github.com/webmproject/libvpx/tags
- http://www.openwall.com/lists/oss-security/2023/09/29/11
- http://www.openwall.com/lists/oss-security/2023/09/29/12
- http://www.openwall.com/lists/oss-security/2023/09/29/14
More exploited flaws from Google
| Added | Vulnerability | Product | Severity | Attack chance |
|---|---|---|---|---|
| Oct 27, 2026 | Unchecked Return Value | Brotli | Critical 9.2 | 55% |
| Sep 16, 2026 | Improper Authorization | Pixel | High 8.8 | 0.6% |
| Sep 9, 2026 | Out of Bounds Write | Chromium V8 | High 8.8 | 3.5% |
| Sep 4, 2026 | Type Confusion | Chromium V8 | High 8.8 | 1.8% |
| Jun 9, 2026 | Out-of-Bounds Read and Write | Chromium V8 | High 8.8 | 2.4% |
| Apr 1, 2026 | Use-After-Free | Dawn | High 8.8 | 14% |
| Mar 13, 2026 | Out-of-Bounds Write | Skia | High 8.8 | 2.3% |
| Mar 13, 2026 | Improper Restriction of Operations Within the Bounds of a Memory Buffer | Chromium V8 | High 8.8 | 2.7% |
Sources: Known Exploited Vulnerabilities (CISA, public domain), CVE records (cve.org) and EPSS (FIRST). The chance of attacks is the EPSS estimate that someone will try to exploit the flaw in the next 30 days.