CVE-2023-1999CWE-416

Use after free in libwebp

Medium · published June 20, 2023

CVSS v3.1
5.3
EPSS
1%
Percentile
60.9
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
5.3 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
CVSS v4.0
Not supplied
EPSS
0.00952 · 60.9th percentile
Weakness
CWE-416 · Use After Free
Published
2023-06-20T11:28Z
EPSS history
Timeline
  • 20 JUN 11:28Z
    Use after free in libwebp
    cvelistv5