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Uncontrolled Resource Consumption


Severity High
Score 7.5/10


An issue was discovered in phpseclib/phpseclib versions 1.x prior to 1.0.23, 2.x prior to 2.0.47, and 3.x prior to 3.0.36. When processing the ASN.1 object identifier of a certificate, a sub identifier may be provided that leads to a denial of service (CPU consumption for decodeOID).

  • LOW
  • NONE
  • NONE
  • NONE
  • NONE
  • HIGH

CWE-400 - Uncontrolled resource consumption

An uncontrolled resource allocation attack (also known as resource exhaustion attack) triggers unauthorized overconsumption of the limited resources in an application, such as memory, file system storage, database connection pool entries, and CPU. This may lead to denial of service for valid users and degradation of the application's functionality as well as that of the host operating system.

Advisory Timeline

  • Published