CVE-2021-4214: Out-of-bounds Write

August 24, 2022 (updated November 8, 2022)

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.

References

access.redhat.com/security/cve/CVE-2021-4214
bugzilla.redhat.com/show_bug.cgi?id=2043393
github.com/glennrp/libpng/issues/302
nvd.nist.gov/vuln/detail/CVE-2021-4214
security-tracker.debian.org/tracker/CVE-2021-4214

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