CVE-2011-2501: Out-of-bounds Read

July 17, 2011 (updated August 6, 2020)

The png_format_buffer function in pngerror.c in libpng allows remote attackers to cause a denial of service (application crash) via a crafted PNG image that triggers an out-of-bounds read during the copying of error-message data. NOTE: this vulnerability exists because of a CVE-2004-0421 regression. NOTE: this is called an off-by-one error by some sources.

References

nvd.nist.gov/vuln/detail/CVE-2011-2501

Code Behaviors & Features

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