Double Free Affecting id-map package, versions >=0.0.0


Severity

Recommended
0.0
high
0
10

CVSS assessment made by Snyk's Security Team. Learn more

Threat Intelligence

EPSS
0.22% (62nd percentile)

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  • Snyk IDSNYK-RUST-IDMAP-1090596
  • published5 Apr 2021
  • disclosed26 Feb 2021
  • creditUnknown

Introduced: 26 Feb 2021

CVE-2021-30455  (opens in a new tab)
CVE-2021-30456  (opens in a new tab)
CVE-2021-30457  (opens in a new tab)
CWE-415  (opens in a new tab)

How to fix?

There is no fixed version for id-map.

Overview

Affected versions of this package are vulnerable to Double Free via the clone_from, get_or_insert and remove_set functions.

The clone_from implementation drops the values present in the map and then begins cloning values from the other map. If a .clone() call panics, then the aforementioned dropped elements can be freed again.

get_or_insert reserves space for a value, before calling the user provided insertion function f. If the function f panics then uninitialized or previously freed memory can be dropped.

When removing a set of elements with remove_set, ptr::drop_in_place is called on each of the elements to be removed. If the Drop implementation of one of these elements panics then the previously dropped elements can be dropped again.

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

CVSS Scores

version 3.1