What is CVE-2023-0996?

CVE-2023-0996 is a high-severity vulnerability in Struktur Libheif, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 7.8/10. Published 2023-02-24.

How severe is CVE-2023-0996?

High severity. CVSS v3 base score is 7.8 out of 10.

Is CVE-2023-0996 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Buffer overflow in Struktur Libheif

CVE-2023-0996

There is a vulnerability in the strided image data parsing code in the emscripten wrapper for libheif. An attacker could exploit this through a crafted image file to cause a buffer overflow in linear memory during a memcpy call.

Vulnerability class: Buffer Overflow

EPSS: 0.003 (22.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

Affected products

Struktur Libheif — versions 1.14.2

Weakness classification (CWE)

CWE-120 — Buffer Copy without Checking Size of Input (Classic Buffer Overflow)

Public proof-of-concept exploits

DiRaltvein/memory-corruption-examples

References

cve_disclosure@tech.gov.sg (Patch, Vendor Advisory)
cve_disclosure@tech.gov.sg (Third Party Advisory)

Frequently asked questions

What is CVE-2023-0996?: CVE-2023-0996 is a high-severity vulnerability in Struktur Libheif, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 7.8/10. Published 2023-02-24.
How severe is CVE-2023-0996?: High severity. CVSS v3 base score is 7.8 out of 10.
Is CVE-2023-0996 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.