Use After Free in Chromium Libwebp

CVE-2023-1999

There exists a use after free/double free in libwebp. An attacker can use the ApplyFiltersAndEncode() function and loop through to free best.bw and assign best = trial pointer. The second loop will then return 0 because of an Out of memory…

Vulnerability class: Use-After-Free

EPSS: 0.010 (57.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N.

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2023-1999?
CVE-2023-1999 is a medium-severity vulnerability in Chromium Libwebp, classified under Use After Free. CVSS score: 5.3/10. Published 2023-06-20.
How severe is CVE-2023-1999?
Medium severity. CVSS v3 base score is 5.3 out of 10.
Is CVE-2023-1999 known to be exploited?
2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.