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MongoDB: Out-of-bounds Write (CVE-2021-32040)

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MongoDB: Out-of-bounds Write (CVE-2021-32040)

Severity
5
CVSS
(AV:N/AC:L/Au:N/C:N/I:N/A:P)
Published
04/12/2022
Created
04/23/2022
Added
04/22/2022
Modified
03/07/2024

Description

It may be possible to have an extremely long aggregation pipeline in conjunction with a specific stage/operator and cause a stack overflow due to the size of the stack frames used by that stage. If an attacker could cause such an aggregation to occur, they could maliciously crash MongoDB in a DoS attack. This vulnerability affects MongoDB Server v4.4 versions prior to and including 4.4.28, MongoDB Server v5.0 versions prior to 5.0.4 and MongoDB Server v4.2 versions prior to 4.2.16. Workaround: >= v4.2.16 users and all v4.4 users can add the --setParameter internalPipelineLengthLimit=50 instead of the default 1000 to mongod at startup to prevent a crash.

Solution(s)

  • mongodb-upgrade-4_2_16
  • mongodb-upgrade-4_4_11
  • mongodb-upgrade-5_0_4

References

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