Denial of Service (DoS) Affecting bzip2.v100 package, versions [,1.0.6)



    Attack Complexity High

    Threat Intelligence

    EPSS 2.72% (91st percentile)
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5.6 medium
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Red Hat
5.6 medium

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  • Snyk ID SNYK-DOTNET-BZIP2V100-60228
  • published 20 Sep 2010
  • disclosed 20 Sep 2010
  • credit Unknown

How to fix?

Upgrade bzip2.v100 to version 1.0.6 or higher.


Affected versions of bzip2.v100 are vulnerable to Denial of Service (DoS) attacks.

Integer overflow in the BZ2_decompress function in decompress.c in bzip2 and libbzip2 before 1.0.6 allows context-dependent attackers to cause a denial of service (application crash) or possibly execute arbitrary code via a crafted compressed file.


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