Buffer overflow in Libpng
CVE-2021-4214
A heap overflow flaw was found in libpngs' pngimage.c program. This flaw allows an attacker with local network access to pass a specially crafted PNG file to the pngimage utility, causing an application to crash, leading to a denial of service.
Vulnerability class: Buffer Overflow
EPSS: 0.005 (40.3th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.
Affected products
- Libpng — versions 1.6.0
- Netapp Ontap_select_deploy_administration_utility
- Debian Debian_linux — versions 10.0, 11.0
- N/a Libpng — versions libpng v1.6
Weakness classification (CWE)
Public proof-of-concept exploits
References
- secalert@redhat.com (Exploit, Third Party Advisory)
- secalert@redhat.com (Exploit, Third Party Advisory, Issue Tracking)
- secalert@redhat.com (Third Party Advisory)
- secalert@redhat.com (Third Party Advisory)
- secalert@redhat.com (Third Party Advisory)
Frequently asked questions
- What is CVE-2021-4214?
- CVE-2021-4214 is a medium-severity vulnerability in Libpng, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 5.5/10. Published 2022-08-24.
- How severe is CVE-2021-4214?
- Medium severity. CVSS v3 base score is 5.5 out of 10.
- Is CVE-2021-4214 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.