漏洞信息
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Vulnerability Title
Arbitrary Command Execution in GNU Bison
Vulnerability Description
GNU Bison allows for an execution of an arbitrary program during HTML report generation due to improper handling of grammar-defined configuration variables. A grammar file can override the executable used for the XML‑to‑HTML transformation step via %define tool.xsltproc, which is accepted without restriction and passed directly to execvp().
When running bison --html on a attacker-provided grammar, this behavior allows execution of an arbitrary program with the privileges of the Bison process.
Maintainers of this project were notified about this vulnerability, and fixed the issue in commit 3169c1e7a2c6acc4c59dfcf8b089896d6881925b. However, they did not provide vulnerable version range. Version 3.8.2 was tested and confirmed as vulnerable, other versions were not tested but might also be vulnerable.
CVSS Information
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:H/VA:L/SC:L/SI:L/SA:L
Vulnerability Type
OS命令中使用的特殊元素转义处理不恰当(OS命令注入)
Vulnerability Title
GNU Bison 命令注入漏洞
Vulnerability Description
GNU bison是美国GNU基金会开源的一种通用语法分析器生成工具。 GNU Bison 3.8.2版本存在命令注入漏洞,该漏洞源于对语法定义的配置变量处理不当,导致在运行bison --html时,攻击者提供的语法文件可覆盖XML到HTML转换的可执行文件,从而执行任意程序。
CVSS Information
N/A
Vulnerability Type
N/A