CVE-2023-1999

MEDIUM

libwebp - Use After Free

Title source: llm
STIX 2.1

Description

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.

Exploits (1)

nomisec WORKING POC
by Pazhanivelmani · poc
https://github.com/Pazhanivelmani/webp_Android10_r33_CVE-2023-1999

References (2)

Core 2

Scores

CVSS v3 5.3
EPSS 0.0035
EPSS Percentile 57.6%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-415 CWE-416
Status published
Products (1)
webmproject/libwebp 0.4.2 - 1.3.1
Published Jun 20, 2023
Tracked Since Feb 18, 2026