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CVE-2023-1999

HIGHCVSS 7.5/10EPSS 0.95%

Last modified

CVE-2023-1999 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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. EPSS estimates a 0.95% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1
7.5/10

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

EPSS Probability
0.95%

56.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
WebmprojectLibwebp>= 0.4.2, < 1.3.1

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2023-1999?
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.
How severe is CVE-2023-1999?
CVE-2023-1999 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 0.95% probability of exploitation in the next 30 days.
How do I fix CVE-2023-1999?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-1999?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST