CVE-2014-4651

Local file disclosure and overwrite via predictable directory

Published Feb 18, 2020 · Updated Aug 6, 2024

Symlink following in Apache jclouds before 1.8.0 allows local users on a provisioned node to read or overwrite files through /tmp/$$. Statements.extractTargzAndFlattenIntoDirectory emits a Bash script that creates a PID-named directory without rejecting a preexisting symbolic link. A user able to preposition that link on the target node can redirect archive extraction or later file moves, exposing data, corrupting files, or interrupting service.

CVSS severity9.8
Critical
EPSS probability2.06%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Symlink following in Apache jclouds before 1.8.0 allows local users on a provisioned node to read or overwrite files through /tmp/$$. Statements.extractTargzAndFlattenIntoDirectory emits a Bash script that creates a PID-named directory without rejecting a preexisting symbolic link. A user able to preposition that link on the target node can redirect archive extraction or later file moves, exposing data, corrupting files, or interrupting service.

The record

CVE
CVE-2014-4651
Published
Feb 18, 2020
Updated
Aug 6, 2024
Vendor
Apache Software Foundation
Product
Apache jclouds
Classifications
CWE-20
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 18, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 6, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=Apache jclouds before 1.8.0

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Apache Software Foundation · Apache jcloudsversion=Apache jclouds before 1.8.0

Published CVSS scores

9.8INCIBE-CERTCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.5INCIBE-CERTAV:N/AC:L/Au:N/C:P/I:P/A:P

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-20Improper Input Validation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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