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  5. CVE-2021-35515

CVE-2021-35515: Excessive Iteration

July 13, 2021 (updated November 7, 2023)

When reading a specially crafted 7Z archive, the construction of the list of codecs that decompress an entry can result in an infinite loop. This could be used to mount a denial of service attack against services that use Compress’ sevenz package.

References

  • commons.apache.org/proper/commons-compress/security-reports.html
  • nvd.nist.gov/vuln/detail/CVE-2021-35515

Code Behaviors & Features

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Affected versions

All versions starting from 1.6 up to 1.20

Fixed versions

  • 1.21

Solution

Upgrade to version 1.21 or above.

Impact 7.5 HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Learn more about CVSS

Weakness

  • CWE-835: Loop with Unreachable Exit Condition ('Infinite Loop')

Source file

maven/org.apache.commons/commons-compress/CVE-2021-35515.yml

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