Home/CVE/RubyGems version 2.6.12 and earlier is vulnerable to maliciously crafted gem specifications that include terminal escape
CVE

CVE-2017-0899

RubyGems version 2.6.12 and earlier is vulnerable to maliciously crafted gem specifications that include terminal escape

RubyGems version 2.6.12 and earlier is vulnerable to maliciously crafted gem specifications that include terminal escape characters. Printing the gem specification would execute terminal escape sequences.

CRITICAL · CVSS 9.8 EPSS 0.09304
Act now
  • EPSS percentile: top 7% of all CVEs by exploitation likelihood
  • Public exploit or PoC is available
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-150Improper Neutralization of Escape, Meta, or Control Sequences
CWE-94Improper Control of Generation of Code ('Code Injection')
▤

Affected Products & Versions

8
rubygems<= 2.6.12
debian linuxall versions
redhat enterprise linux desktopall versions
redhat enterprise linux serverall versions
redhat enterprise linux server ausall versions
redhat enterprise linux server eusall versions
redhat enterprise linux server tusall versions
redhat enterprise linux workstationall versions
▤

Affected Packages

1
Language-ecosystem packages (from OSV) tied to this CVE, with the version that fixes it - the dependency-level detail NVD doesn’t carry.
RubyGems rubygems-update CRITICAL fixed in 2.6.13
⚠

Public Exploits & PoCs

1
pochackerone.com · 226335hackerone.com
▣

Scoring & Timeline

9.8
CRITICAL · CVSS v3.0 · support@hackerone.com
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 NVD31 Aug 2017 · 08:29 PM
CVSS VectorCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
⚑

Vendor Advisories

6
suse-csafSUSE-SU-2020:1570-1
rhsaRHSA-2018:0378Low
rhsaRHSA-2018:0585Low
rhsaRHSA-2018:0583Low
rhsaRHSA-2017:3485Moderate
🔗

References & Sources

8
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://blog.rubygems.org/2017/08/27/2.6.13-released.htmlPatchVendor Advisory
http://www.securityfocus.com/bid/100576Third Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1039249Third Party AdvisoryVDB Entry
https://github.com/rubygems/rubygems/commit/1bcbc7fe637b03145401ec9c094066285934a7f1PatchThird Party Advisory
https://github.com/rubygems/rubygems/commit/ef0aa611effb5f54d40c7fba6e8235eb43c5a491PatchThird Party Advisory
https://lists.debian.org/debian-lts-announce/2018/07/msg00012.htmlMailing ListThird Party Advisory
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