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CVE-2021-45958

MEDIUMCVSS 5.5/10EPSS 1.56%

Last modified

CVE-2021-45958 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. UltraJSON (aka ujson) through 5.1.0 has a stack-based buffer overflow in Buffer_AppendIndentUnchecked (called from encode). Exploitation can, for example, use a large amount of indentation.. EPSS estimates a 1.56% chance of exploitation in the next 30 days.

Description

UltraJSON (aka ujson) through 5.1.0 has a stack-based buffer overflow in Buffer_AppendIndentUnchecked (called from encode). Exploitation can, for example, use a large amount of indentation.

Metrics

CVSS 3.1
5.5/10

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

EPSS Probability
1.56%

72.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
Ultrajson ProjectUltrajson< 5.2.0
DebianDebian Linux9.0
FedoraprojectFedora35
FedoraprojectFedora36
FedoraprojectFedora37

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2021-45958?
UltraJSON (aka ujson) through 5.1.0 has a stack-based buffer overflow in Buffer_AppendIndentUnchecked (called from encode). Exploitation can, for example, use a large amount of indentation.
How severe is CVE-2021-45958?
CVE-2021-45958 has a CVSS score of 5.5/10 (MEDIUM severity). The EPSS model estimates a 1.56% probability of exploitation in the next 30 days.
How do I fix CVE-2021-45958?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-45958?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST