Home/CVE/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 earl
CVE

CVE-2018-1000078

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 earl

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 Cross Site Scripting (XSS) vulnerability in gem server display of homepage attribute that can result in XSS. This attack appear to be exploitable via the victim must browse to a malicious gem on a vulnerable gem server. This vulnerability appears to have been fixed in 2.7.6.

MEDIUM · CVSS 6.1 EPSS 0.00823
Monitor
  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
▤

Affected Products & Versions

5
rubygems<= 2.2.9
rubygems<= 2.3.6
rubygems<= 2.4.3
rubygems<= 2.5.0
debian linuxall versions
▤

Affected Packages

2
Language-ecosystem packages (from OSV) tied to this CVE, with the version that fixes it - the dependency-level detail NVD doesn’t carry.
Maven org.jruby:jruby-stdlib MODERATE fixed in 9.1.16.0
RubyGems rubygems-update MODERATE fixed in 2.7.6
▣

Scoring & Timeline

6.1
MEDIUM · CVSS v3.0 · cve@mitre.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD13 Mar 2018 · 03:29 PM
CVSS VectorCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
⚑

Vendor Advisories

11
suse-csafSUSE-SU-2020:1570-1
suse-csafopenSUSE-SU-2019:1771-1
suse-csafSUSE-SU-2019:1804-1
rhsaRHSA-2018:3729Important
rhsaRHSA-2018:3731Important
🔗

References & Sources

11
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
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://github.com/rubygems/rubygems/commit/66a28b9275551384fdab45f3591a82d6b59952cbPatchThird 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
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