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CVE-2017-0904

private_address_check vulnerable to bypass of Resolv.getaddresses method

8.1 HighFix available

CVE-2017-0904 is a high vulnerability (CVSS 8.1) in Hackerone Private Address Check Ruby Gem, published November 13, 2017. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 2.42%, the 84th percentile. Fixed in private_address_check 0.4.0.

What does this mean?
Severity
8.1 HighCVSS 3.0, NVD
Exploit chance
2.42%EPSS, 84th percentile
Exploitation
None knownNot on CISA’s or ENISA’s lists
Fixed in
0.4.0private_address_check +1 more

Description

The private_address_check ruby gem before 0.4.0 is vulnerable to a bypass due to use of Ruby's Resolv.getaddresses method, which is OS-dependent and should not be relied upon for security measures, such as when used to blacklist private network addresses to prevent server-side request forgery.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
High
Privileges needed
None
User interaction
None

What an attacker can affect

Confidentiality
High
Integrity
High
Availability
High

Exploit likelihood

2.42%Up 1.2 points since Apr 14, 2021
90%50%10%1%

Affected products

Affected packages

Affected packages
PackageAffectedFixed
private_address_check
RubyGems
before 0.4.0
0.4.0
private_address_check
RubyGems
before 0.4.0, plus listed versions
0.1.00.2.00.3.0
0.4.0

What each source reports

NVD Score used8.1

The private_address_check ruby gem before 0.4.0 is vulnerable to a bypass due to use of Ruby's Resolv.getaddresses method, which is OS-dependent and should not be relied upon for security measures, such as when used to blacklist private network addresses to prevent server-side request forgery.

Record
CVE-2017-0904
CVSS 3.0
8.1 HighCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0
6.8 MediumAV:N/AC:M/Au:N/C:P/I:P/A:P
Weakness
CWE-242, CWE-755
Updated
2026-11-02
CVE ListNo score

The private_address_check ruby gem before 0.4.0 is vulnerable to a bypass due to use of Ruby's Resolv.getaddresses method, which is OS-dependent and should not be relied upon for security measures, such as when used to blacklist private network addresses to prevent server-side request forgery.

Record
CVE-2017-0904
Weakness
CWE-242
Updated
2026-11-02
EUVDEUVD-2017-0348No score

The private_address_check ruby gem before 0.4.0 is vulnerable to a bypass due to use of Ruby's Resolv.getaddresses method, which is OS-dependent and should not be relied upon for security measures, such as when used to blacklist private network addresses to prevent server-side request forgery.

Record
EUVD-2017-0348
Updated
2026-11-03
GitHub AdvisoriesGHSA-hxhj-hp9m-qwc4No score

private_address_check vulnerable to bypass of Resolv.getaddresses method

The private_address_check ruby gem before 0.4.0 is vulnerable to a bypass due to use of Ruby's Resolv.getaddresses method, which is OS-dependent and should not be relied upon for security measures, such as when used to blacklist private network addresses to prevent server-side request forgery.

Record
GHSA-hxhj-hp9m-qwc4
Weakness
CWE-242
Updated
2026-11-02
OSV8.1

The private_address_check ruby gem before 0.4.0 is vulnerable to a bypass due to use of Ruby's Resolv.getaddresses method, which is OS-dependent and should not be relied upon for security measures, such as when used to blacklist private network addresses to prevent server-side request forgery.

Record
CVE-2017-0904
CVSS 3.0
8.1 HighCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVGHSA-hxhj-hp9m-qwc4No score

private_address_check vulnerable to bypass of Resolv.getaddresses method

The private_address_check ruby gem before 0.4.0 is vulnerable to a bypass due to use of Ruby's Resolv.getaddresses method, which is OS-dependent and should not be relied upon for security measures, such as when used to blacklist private network addresses to prevent server-side request forgery.

Record
GHSA-hxhj-hp9m-qwc4
Weakness
CWE-242
Updated
2026-11-02

History

History
RecordedChangedSources
facts
aliases, productsEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

References

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