漏洞信息
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Vulnerability Title
pyasn1: Uncontrolled resource consumption when converting decoded REAL values
Vulnerability Description
pyasn1 is a generic ASN.1 library for Python. Prior to 0.6.4, the univ.Real type converted its mantissa, base, and exponent value to a Python float using exact big-integer exponentiation. A BER, CER, or DER encoded REAL value only a few bytes long can carry a very large exponent, causing float conversion through prettyPrint(), str(), comparison, arithmetic, int(), or an explicit float() call to consume excessive CPU and memory and hang applications that decode untrusted ASN.1 data and then print, log, or compare decoded objects. This issue is fixed in version 0.6.4.
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Vulnerability Type
未加控制的资源消耗(资源穷尽)
Vulnerability Title
pyasn1 资源管理错误漏洞
Vulnerability Description
pyasn1是pyasn1组织开源的一个PythonASN.1库。 pyasn1 0.6.4之前版本存在资源管理错误漏洞,该漏洞源于univ.Real类型使用精确大整数幂运算转换其尾数、基数和指数值为Python浮点数,可能导致通过prettyPrint()、str()、比较、算术、int()或显式float()调用进行浮点转换时消耗过多CPU和内存,并挂起解码不可信ASN.1数据然后打印、记录或比较解码结果的应用。
CVSS Information
N/A
Vulnerability Type
N/A