HOMEVULNERABILITIESCVE-2018-1000079
MEDIUM

CVE-2018-1000079

CWE-22Published: March 13, 2018· Updated: Jun 17, 2026

5.5
CVSS v3.1

Official Description

RubyGems version Ruby 2.2 series: 2.2.9 and earlier, Ruby 2.3 series: 2.3.6 and earlier, Ruby 2.4 series: 2.4.3 and earlier, Ruby 2.5 series: 2.5.0 and earlier, prior to trunk revision 62422 contains a Directory Traversal vulnerability in gem installation that can result in the gem could write to arbitrary filesystem locations during installation. This attack appear to be exploitable via the victim must install a malicious gem. This vulnerability appears to have been fixed in 2.7.6.

NVD Source

Technical Analysis

CVE-2018-1000079 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation does not require any privileges, though user interaction (Required) is needed, which slightly reduces the risk of mass automated attacks.

A successful exploit results in full integrity compromise (data manipulation), with a CVSS base score of 5.5.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorLocal
Attack ComplexityLow
Privileges Req.None
User InteractionRequired
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityHigh
AvailabilityNone
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

Affected Vendors & Products

rubygems1 product(s)
rubygems
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://github.com/rubygems/rubygems/commit/666ef793cad42eed96f7aee1cdf77865db921099
PATCHhttps://github.com/rubygems/rubygems/commit/f83f911e19e27cbac1ccce7471d96642241dd759
PATCHhttps://github.com/rubygems/rubygems/commit/666ef793cad42eed96f7aee1cdf77865db921099
PATCHhttps://github.com/rubygems/rubygems/commit/f83f911e19e27cbac1ccce7471d96642241dd759
ADVISORYhttp://blog.rubygems.org/2018/02/15/2.7.6-released.html
ADVISORYhttp://blog.rubygems.org/2018/02/15/2.7.6-released.html

All References (30)

→
http://blog.rubygems.org/2018/02/15/2.7.6-released.htmlVendor Advisory
→
http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00036.html
→
https://access.redhat.com/errata/RHSA-2018:3729
→
https://access.redhat.com/errata/RHSA-2018:3730
→
https://access.redhat.com/errata/RHSA-2018:3731
→
https://access.redhat.com/errata/RHSA-2019:2028
→
https://access.redhat.com/errata/RHSA-2020:0542
→
https://access.redhat.com/errata/RHSA-2020:0591
→
https://access.redhat.com/errata/RHSA-2020:0663
→
https://github.com/rubygems/rubygems/commit/666ef793cad42eed96f7aee1cdf77865db921099Patch · Third Party Advisory
→
https://github.com/rubygems/rubygems/commit/f83f911e19e27cbac1ccce7471d96642241dd759Patch · Third Party Advisory
→
https://lists.debian.org/debian-lts-announce/2018/07/msg00012.html
→
https://usn.ubuntu.com/3621-1/
→
https://www.debian.org/security/2018/dsa-4219
→
https://www.debian.org/security/2018/dsa-4259

Quick Facts

CVE IDCVE-2018-1000079
CVSS Score5.5 / 10
SeverityMEDIUM
WeaknessCWE-22
CISA KEVNo
Affected1 vendor(s)
PublishedMar 13, 2018

Related CVEs (CWE-22)

CVE-2013-6221
10.0
CVE-2015-0779
10.0
CVE-2024-37902
10.0
CVE-2017-12815
10.0
CVE-2011-2653
10.0
CVE-2010-5324
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2018-1000079 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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