Denial of Service (DoS)

Affecting thrift gem, versions >=0.0.0

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Overview

thrift is a Ruby bindings package for Apache Thrift.

Affected versions of this package are vulnerable to Denial of Service (DoS). A server or client may run into an endless loop when fed with specific input data. Note: This issue was found to be partially fixed within version 0.11.0, As such depending on the installed version it affects only certain language bindings.

Details

Denial of Service (DoS) describes a family of attacks, all aimed at making a system inaccessible to its intended and legitimate users.

Unlike other vulnerabilities, DoS attacks usually do not aim at breaching security. Rather, they are focused on making websites and services unavailable to genuine users resulting in downtime.

One popular Denial of Service vulnerability is DDoS (a Distributed Denial of Service), an attack that attempts to clog network pipes to the system by generating a large volume of traffic from many machines.

When it comes to open source libraries, DoS vulnerabilities allow attackers to trigger such a crash or crippling of the service by using a flaw either in the application code or from the use of open source libraries.

Two common types of DoS vulnerabilities:

  • High CPU/Memory Consumption- An attacker sending crafted requests that could cause the system to take a disproportionate amount of time to process. For example, commons-fileupload:commons-fileupload.

  • Crash - An attacker sending crafted requests that could cause the system to crash. For Example, npm ws package

Remediation

A fix was pushed into the master branch but not yet published.

References

CVSS Score

8.2
high severity
  • Attack Vector
    Network
  • Attack Complexity
    Low
  • Privileges Required
    None
  • User Interaction
    None
  • Scope
    Unchanged
  • Confidentiality
    None
  • Integrity
    Low
  • Availability
    High
  • Exploit maturity
    Unproven
  • Remediation Level
    Official
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H/E:U/RL:O/RC:U
Credit
Hasnain Lakhani
CVE
CVE-2019-0205
CWE
CWE-189
Snyk ID
SNYK-RUBY-THRIFT-474614
Disclosed
29 Oct, 2019
Published
29 Oct, 2019