Vulnerability Information
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Vulnerability Title
N/A
Vulnerability Description
Integer underflow in Freetype before 2.2 allows remote attackers to cause a denial of service (crash) via a font file with an odd number of blue values, which causes the underflow when decrementing by 2 in a context that assumes an even number of values.
CVSS Information
N/A
Vulnerability Type
N/A
Vulnerability Title
FreeType pshglob.c文件 psh_blues_set_zones_0()函数整数溢出漏洞
Vulnerability Description
FreeType是FreeType团队开发的一个基于C语言的、高质量的且可移植的开源字体引擎库，它可用来将字符栅格化并映射成位图以及提供其他字体相关业务的支持。 FreeType的src/pshinter/pshglob.c文件的psh_blues_set_zones_0()函数中存在溢出漏洞。由于read_count为无符整型，以2递减，因此攻击者可以通过控制read_count为奇数导致整数下溢。一旦溢出了read_count，循环就会向堆中dump垃圾数据，导致崩溃。
CVSS Information
N/A
Vulnerability Type
N/A