Denial of Service (DoS)

Affecting libplist package, versions >=0.0.0

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Overview

libplist is a library to handle Apple Property List format in binary or XML

Affected versions of this package are vulnerable to Denial of Service (DoS). The parse_string_node function in bplist.c in allows local users to cause a denial of service (memory allocation error) via a crafted plist file.

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

There is no fixed version for libplist.

References

CVSS Score

5.0
medium severity
  • Attack Vector
    Local
  • Attack Complexity
    Low
  • Privileges Required
    Low
  • User Interaction
    Required
  • Scope
    Unchanged
  • Confidentiality
    None
  • Integrity
    None
  • Availability
    High
CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H
Credit
zhunki
CVE
CVE-2017-6436
CWE
CWE-399
Snyk ID
SNYK-COCOAPODS-LIBPLIST-472398
Disclosed
15 Mar, 2017
Published
27 Nov, 2019