Strix
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CVE-2017-8823

UnknownEPSS 1.60%

Last modified

CVE-2017-8823 is a vulnerability of currently unknown severity. In Tor before 0.2.5.16, 0.2.6 through 0.2.8 before 0.2.8.17, 0.2.9 before 0.2.9.14, 0.3.0 before 0.3.0.13, and 0.3.1 before 0.3.1.9, there is a use-after-free in onion service v2 during intro-point expiration because the expiring list is mismanaged in certain error cases, aka TROVE-2017-013.. EPSS estimates a 1.60% chance of exploitation in the next 30 days.

Description

In Tor before 0.2.5.16, 0.2.6 through 0.2.8 before 0.2.8.17, 0.2.9 before 0.2.9.14, 0.3.0 before 0.3.0.13, and 0.3.1 before 0.3.1.9, there is a use-after-free in onion service v2 during intro-point expiration because the expiring list is mismanaged in certain error cases, aka TROVE-2017-013.

Metrics

EPSS Probability
1.60%

72.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
Tor ProjectTor< 0.2.5.16
Tor ProjectTor>= 0.2.6, < 0.2.8.17
Tor ProjectTor>= 0.2.9, < 0.2.9.14
Tor ProjectTor>= 0.3.0, < 0.3.0.13
Tor ProjectTor>= 0.3.1, < 0.3.1.9
DebianDebian Linux8.0
DebianDebian Linux9.0

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2017-8823?
In Tor before 0.2.5.16, 0.2.6 through 0.2.8 before 0.2.8.17, 0.2.9 before 0.2.9.14, 0.3.0 before 0.3.0.13, and 0.3.1 before 0.3.1.9, there is a use-after-free in onion service v2 during intro-point expiration because the expiring list is mismanaged in certain error cases, aka TROVE-2017-013.
How severe is CVE-2017-8823?
Severity scoring for CVE-2017-8823 is pending analysis. The EPSS model estimates a 1.60% probability of exploitation in the next 30 days.
How do I fix CVE-2017-8823?
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-2017-8823?

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

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Source: NVD / NIST