CVE-2023-1999

Use after free in libwebp

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

Chromium · libwebp

CVSS v3.1 NVD

7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS v3.1 GOOGLE

5.3 MEDIUMCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N

EPSS

0.95% chance of exploitation in the next 30 days, 61st percentile

Published

2023-06-20

Updated

2025-02-13

Proof-of-concept exploits (1)

• Pazhanivelmani/webp_Android10_r33_CVE-2023-19990★ · 2024-11-12

Security advisories

• https://chromium.googlesource.com/webm/libwebp

References

• CVE Record
• NVD entry

Related

• CVE-2016-6328
• CVE-2018-9338
• CVE-2023-2603
• CVE-2025-26443