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CVE-2021-28090

MEDIUMCVSS 5.3/10EPSS 2.10%

Last modified

CVE-2021-28090 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. Tor before 0.4.5.7 allows a remote attacker to cause Tor directory authorities to exit with an assertion failure, aka TROVE-2021-002.. EPSS estimates a 2.10% chance of exploitation in the next 30 days.

Description

Tor before 0.4.5.7 allows a remote attacker to cause Tor directory authorities to exit with an assertion failure, aka TROVE-2021-002.

Metrics

CVSS 3.1
5.3/10

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

EPSS Probability
2.10%

79.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersionsUpdate
TorprojectTor< 0.3.5.14—
TorprojectTor>= 0.4.4.4, < 0.4.4.8—
TorprojectTor>= 0.4.5.0, < 0.4.5.7—
TorprojectTor0.4.4.0Alpha
TorprojectTor0.4.4.1Alpha
TorprojectTor0.4.4.2Alpha
TorprojectTor0.4.4.3Alpha
FedoraprojectFedora33—

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2021-28090?
Tor before 0.4.5.7 allows a remote attacker to cause Tor directory authorities to exit with an assertion failure, aka TROVE-2021-002.
How severe is CVE-2021-28090?
CVE-2021-28090 has a CVSS score of 5.3/10 (MEDIUM severity). The EPSS model estimates a 2.10% probability of exploitation in the next 30 days.
How do I fix CVE-2021-28090?
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-2021-28090?

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

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Source: NVD / NIST