Vulnerability Information
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Vulnerability Title
N/A
Vulnerability Description
A buffer overflow was discovered in libxml2 20904-GITv2.9.4-16-g0741801. The function xmlSnprintfElementContent in valid.c is supposed to recursively dump the element content definition into a char buffer 'buf' of size 'size'. The variable len is assigned strlen(buf). If the content->type is XML_ELEMENT_CONTENT_ELEMENT, then (i) the content->prefix is appended to buf (if it actually fits) whereupon (ii) content->name is written to the buffer. However, the check for whether the content->name actually fits also uses 'len' rather than the updated buffer length strlen(buf). This allows us to write about "size" many bytes beyond the allocated memory. This vulnerability causes programs that use libxml2, such as PHP, to crash.
CVSS Information
N/A
Vulnerability Type
N/A
Vulnerability Title
libxml2 缓冲区错误漏洞
Vulnerability Description
libxml2是GNOME项目组所研发的一个基于C语言的用来解析XML文档的函数库，它支持多种编码格式、Xpath解析、Well-formed和valid验证等。 libxml2 20904-GITv2.9.4-16-g0741801版本中存在缓冲区溢出漏洞。攻击者可利用该漏洞造成程序崩溃。
CVSS Information
N/A
Vulnerability Type
N/A