Is CVE-2023-1999 in the CISA KEV catalog?

No. CVE-2023-1999 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2023-1999?

CVE-2023-1999 has a CVSS v3 base score of 5.3 (MEDIUM).

What is the EPSS score for CVE-2023-1999?

CVE-2023-1999 has an EPSS score of 0.95% (57th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2023-1999?

Upgrade firefox on debian unstable to 112.0-1 or later. Fixes are available for 9 affected products.

CVE & CISA-KEV Catalog

CVE-2023-1999

MEDIUM

5.3

CVSS v3

NVD

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.

CWE-416Use After Free CWE-415

How to fix

Remediation Available

firefoxDebian

Fixed in:112.0-1CVE-2023-1999

libwebpUbuntu

Fixed in:0.4.4-1ubuntu0.1~esm2USN-6078-2

Fixed in:0.6.1-2ubuntu0.18.04.2USN-6078-1

Fixed in:0.6.1-2ubuntu0.20.04.2USN-6078-1

Fixed in:1.2.2-2ubuntu0.22.04.1USN-6078-1

Fixed in:1.2.2-2ubuntu0.22.10.1USN-6078-1

Fixed in:1.2.4-0.1ubuntu0.23.04.1USN-6078-1

libwebp5Ubuntu

Fixed in:0.4.4-1ubuntu0.1~esm2USN-6078-2

libwebp6Ubuntu

Fixed in:0.6.1-2ubuntu0.18.04.2USN-6078-1

Fixed in:0.6.1-2ubuntu0.20.04.2USN-6078-1

libwebp7Ubuntu

Fixed in:1.2.2-2ubuntu0.22.04.1USN-6078-1

Fixed in:1.2.2-2ubuntu0.22.10.1USN-6078-1

Fixed in:1.2.4-0.1ubuntu0.23.04.1USN-6078-1

libwebpdemux1Ubuntu

Fixed in:0.4.4-1ubuntu0.1~esm2USN-6078-2

libwebpdemux2Ubuntu

Fixed in:0.6.1-2ubuntu0.18.04.2USN-6078-1

Fixed in:0.6.1-2ubuntu0.20.04.2USN-6078-1

Fixed in:1.2.2-2ubuntu0.22.04.1USN-6078-1

Fixed in:1.2.2-2ubuntu0.22.10.1USN-6078-1

Fixed in:1.2.4-0.1ubuntu0.23.04.1USN-6078-1

libwebpmux1Ubuntu

Fixed in:0.4.4-1ubuntu0.1~esm2USN-6078-2

libwebpmux3Ubuntu

Fixed in:0.6.1-2ubuntu0.18.04.2USN-6078-1

Fixed in:0.6.1-2ubuntu0.20.04.2USN-6078-1

Fixed in:1.2.2-2ubuntu0.22.04.1USN-6078-1

Fixed in:1.2.2-2ubuntu0.22.10.1USN-6078-1

Fixed in:1.2.4-0.1ubuntu0.23.04.1USN-6078-1

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityHigh

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityNone

AvailabilityNone

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

Exploit Intelligence

0.95%probability of exploitation in 30 days

57thpercentile

Moderate risk: more likely to be exploited than 57% of all known CVEs.

References

Product1

chromium.googlesource.com

Other references1

security.gentoo.org

Related Vulnerabilities

Other CWE-416 (Use After Free) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2019-0708	Critical	9.8	100%	KEV + Ransom	-
CVE-2021-31166	Critical	9.8	100%	KEV	Fix
CVE-2015-5119	Critical	9.8	99%	KEV	-
CVE-2010-3962	High	8.1	97%	KEV	-
CVE-2015-0313	Critical	9.8	96%	KEV	Fix
CVE-2017-9798	High	7.5	95%	-	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-02-13.