ScaleViewPortExtEx in libemf.cpp in libEMF (aka ECMA-234 Metafile Library) 1.0.12 allows an integer overflow and denial of service via a crafted EMF file.
The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.
| Link | Tags |
|---|---|
| http://libemf.sourceforge.net/index.html | product third party advisory |
| https://sourceforge.net/projects/libemf/ | third party advisory |
| https://sourceforge.net/p/libemf/code/HEAD/tree/ | third party advisory |
| https://sourceforge.net/p/libemf/news/2020/06/release-of-libemf-1013/ | third party advisory |
| https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CVZXYNDM4YOONMXYPW2GTMIS6V6JBIL6/ | vendor advisory |
| https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/555PIBSHDUZD26UCJ5DHCQ4W7RXEZC66/ | vendor advisory |