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.
The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow.
The product writes data past the end, or before the beginning, of the intended buffer.
| Link | Tags |
|---|---|
| https://github.com/glennrp/libpng/issues/302 | third party advisory exploit |
| https://bugzilla.redhat.com/show_bug.cgi?id=2043393 | third party advisory issue tracking exploit |
| https://access.redhat.com/security/cve/CVE-2021-4214 | third party advisory |
| https://security-tracker.debian.org/tracker/CVE-2021-4214 | third party advisory |
| https://security.netapp.com/advisory/ntap-20221020-0001/ | third party advisory |