medium5.3
CVE-2023-1999
There exists a use after free/double free in libwebp.
Impact
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 error in VP8 encoder, the pointer is still assigned to trial and the AddressSanitizer will attempt a double free.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Webmproject | Libwebp | from 0.4.2 before 1.3.1 |