HOMEVULNERABILITIESCVE-2018-1000077
MEDIUM

CVE-2018-1000077

CWE-20Published: March 13, 2018· Updated: Jun 17, 2026

5.3
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 Improper Input Validation vulnerability in ruby gems specification homepage attribute that can result in a malicious gem could set an invalid homepage URL. This vulnerability appears to have been fixed in 2.7.6.

NVD Source

Technical Analysis

CVE-2018-1000077 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityLow
AvailabilityNone
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Affected Vendors & Products

Debian1 product(s)
debian linux
rubygems1 product(s)
rubygems
Source: NVD CPE · 2 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/feadefc2d351dcb95d6492f5ad17ebca546eb964
PATCHhttps://github.com/rubygems/rubygems/commit/feadefc2d351dcb95d6492f5ad17ebca546eb964
ADVISORYhttp://blog.rubygems.org/2018/02/15/2.7.6-released.html
ADVISORYhttps://lists.debian.org/debian-lts-announce/2018/04/msg00000.html
ADVISORYhttps://lists.debian.org/debian-lts-announce/2018/04/msg00001.html
ADVISORYhttp://blog.rubygems.org/2018/02/15/2.7.6-released.html
ADVISORYhttps://lists.debian.org/debian-lts-announce/2018/04/msg00000.html
ADVISORYhttps://lists.debian.org/debian-lts-announce/2018/04/msg00001.html

All References (36)

→
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/feadefc2d351dcb95d6492f5ad17ebca546eb964Patch · Third Party Advisory
→
https://lists.debian.org/debian-lts-announce/2018/04/msg00000.htmlThird Party Advisory
→
https://lists.debian.org/debian-lts-announce/2018/04/msg00001.htmlThird Party Advisory
→
https://lists.debian.org/debian-lts-announce/2018/04/msg00023.html
→
https://lists.debian.org/debian-lts-announce/2018/07/msg00012.html
→
https://lists.debian.org/debian-lts-announce/2019/05/msg00028.html

Quick Facts

CVE IDCVE-2018-1000077
CVSS Score5.3 / 10
SeverityMEDIUM
WeaknessCWE-20
CISA KEVNo
Affected2 vendor(s)
PublishedMar 13, 2018

Related CVEs (CWE-20)

CVE-2008-1331
10.0
CVE-2007-6176
10.0
CVE-2007-6494
10.0
CVE-2008-6826
10.0
CVE-2003-1425
10.0
CVE-2008-6555
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2018-1000077 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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