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CVE-2023-1999

Use after free in libwebp

Medium5.3EPSS 0.95%
Published
Updated
Reserved
Assigned by
Google

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.

Scores

CVSS scores of CVE-2023-1999, by who scored it
Scored byCVSSScoreVector
GoogleCNA (assigner)3.1Medium5.3CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
NVDNVD · Modified3.1High7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS (exploitation in 30 days)
0.95% · top 39% of all CVEs (6 Nov 2026)
CISA SSVC
Exploitation: none · Automatable: no · Technical impact: partial
Loading the EPSS history…

The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.3.

Weakness

Affected products

  • Chromium · libwebp

    • affected 0.4.2 – < 1.3.1
    • affected 0.4.2 – < 1.3.0-8-ga486d800

References (2)

Sources

The same CVE in the primary databases and aggregators, to check against.

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Record last updated .