Vulnerability Information
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Vulnerability Title
Asterisk xml.c uses unsafe XML_PARSE_NOENT leading to potential XXE Injection
Vulnerability Description
Asterisk is an open source private branch exchange and telephony toolkit. Prior to versions 20.7-cert9, 20.18.2, 21.12.1, 22.8.2, and 23.2.2, the ast_xml_open() function in xml.c parses XML documents using libxml with unsafe parsing options that enable entity expansion and XInclude processing. Specifically, it invokes xmlReadFile() with the XML_PARSE_NOENT flag and later processes XIncludes via xmlXIncludeProcess().If any untrusted or user-supplied XML file is passed to this function, it can allow an attacker to trigger XML External Entity (XXE) or XInclude-based local file disclosure, potentially exposing sensitive files from the host system. This can also be triggered in other cases in which the user is able to supply input in xml format that triggers the asterisk process to parse it. This issue has been patched in versions 20.7-cert9, 20.18.2, 21.12.1, 22.8.2, and 23.2.2.
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:N/I:L/A:N
Vulnerability Type
XML外部实体引用的不恰当限制(XXE)
Vulnerability Title
Asterisk 代码问题漏洞
Vulnerability Description
Asterisk是Asterisk开源的一款PBX系统的软件，运行在Linux系统上，支持使用SIP、IAX、H323协议进行IP通话。 Asterisk 20.7-cert9之前版本、20.18.2之前版本、21.12.1之前版本、22.8.2之前版本和23.2.2之前版本存在代码问题漏洞，该漏洞源于XML解析函数使用不安全的解析选项，可能导致XML外部实体攻击或基于XInclude的本地文件泄露。
CVSS Information
N/A
Vulnerability Type
N/A