CVE-2018-12015

HIGHEPSS 94th pctl

7.5

CVSS v3

Description

In Perl through 5.26.2, the Archive::Tar module allows remote attackers to bypass a directory-traversal protection mechanism, and overwrite arbitrary files, via an archive file containing a symlink and a regular file with the same name.

CWE-59Link Following

How to fix

Remediation Available

perl-Archive-TarAmazon

Fixed in:0:1.92-3.amzn2

perlDebian

Fixed in:5.26.2-6CVE-2018-12015

perlUbuntu

Fixed in:5.18.2-2ubuntu1.6USN-3684-1

This Ubuntu release reached end-of-life on 2019-04-02.

Fixed in:5.22.1-9ubuntu0.5USN-3684-1

This Ubuntu release reached end-of-life on 2021-04-02.

Fixed in:5.26.1-6ubuntu0.1USN-3684-1

This Ubuntu release reached end-of-life on 2023-05-31. Extended security maintenance is available until 2028-04-01.

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityHigh

AvailabilityNone

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Exploit Intelligence

7.31%probability of exploitation in 30 days

94thpercentile

High risk: more likely to be exploited than 94% of all known CVEs.

References

Patch1

security.netapp.com

Exploit1

bugs.debian.org

Third-Party Advisory8

Other references2

Related Vulnerabilities

Other CWE-59 (Link Following) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2022-30333	High	7.5	99%	KEV + Ransom	Fix
CVE-2021-21300	High	8.0	89%	-	Fix
CVE-2021-32610	High	7.1	73%	-	Fix
CVE-2020-36193	High	7.5	71%	KEV	Fix
CVE-2023-40028	Medium	4.9	69%	-	Fix
CVE-2023-36874	High	7.8	43%	KEV	Fix

Common questions

How do I fix CVE-2018-12015?

Published advisories record a fix for 3 affected products. The "How to fix" section on this page lists the fixed version and source advisory for each one, so apply the entry matching what you actually run.

Is CVE-2018-12015 being actively exploited?

Not that we know of. CVE-2018-12015 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 7.3% is the estimated probability that it will be exploited in the next 30 days. That is higher than 94% of all scored CVEs.

How severe is CVE-2018-12015?

CVE-2018-12015 has a CVSS v3 base score of 7.5, rated high. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

What does CVE-2018-12015 affect?

Published advisories record a fix for perl-Archive-Tar (Amazon), perl (Debian), perl (Ubuntu). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-06-17.