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CVE-2018-3759

N/A
Published: June 13, 2018 at 03:00 PM UTC
Updated: June 17, 2026 at 01:57 AM UTC
1 product affected across 1 vendorPrivate Address Check

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Severity
N/A
Exploit prediction
EPSS 0.7%

Description

private_address_check ruby gem before 0.5.0 is vulnerable to a time-of-check time-of-use (TOCTOU) race condition due to the address the socket uses not being checked. DNS entries with a TTL of 0 can trigger this case where the initial resolution is a public address but the subsequent resolution is a private address.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Private Address Check· Private Address Check Projectrubygems
95%
v < 0.5.00.5.0
Affected range stops below 0.5.0, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (1)

x_refsource_MISCPatchThird Party Advisory
Source: [email protected]
https://github.com/jtdowney/private_address_check/commit/4068228187db87fea7577f7020099399772bb147

CVSS

4.3MEDIUM[email protected]
Confidentiality
PARTIAL
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-362

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