Package : optipng Version : 0.6.4-1+deb7u4 CVE ID : CVE-2017-16938 Debian Bug : 878839 optipng, an advanced PNG (Portable Network Graphics) optimizer, has been found vulnerable to a buffer overflow which allows remote attackers to cause a denial-of-service attack or other unspecified impact with a maliciously crafted GIF format file, related to an uncontrolled loop in the LZWReadByte function of the gifread.c file. For Debian 7 "Wheezy", these problems have been fixed in version 0.6.4-1+deb7u4. We recommend that you upgrade your optipng packages. Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at: https://wiki.debian.org/LTS
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