Vulnerability Report

CVE-2019-8320

Title: Rubygems Path Traversal / LFI

Path Traversal / LFI

Proof Of Concept

No public PoC currently indexed for CVE-2019-8320.

CWE Category CWE-22
Published Date Jun 06, 2019
Modified Date Nov 21, 2024
Exploit Status Not Found
Score 7.4 CVSS v3.0
Exploit Probability (EPSS)
6.22%

Vulnerability Summary

CVE-2019-8320: A Directory Traversal issue was discovered in RubyGems 2.7.6 and later through 3.0.2. Before making new directories or touching files (which now include path-checking code for symlinks), it would delete the target destination. If that destination was hidden behind a symlink, a malicious gem could delete arbitrary files on the user's machine, presuming the attacker could guess at paths. Given how frequently gem is run as sudo, and how predictable paths are on modern systems (/tmp, /usr, etc.), this could likely lead to data loss or an unusable system.

Impacted Vendors

R
rubyforge 1
R
rubygems 1

Reference Links

http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00036.html https://access.redhat.com/errata/RHSA-2019:1429 https://blog.rubygems.org/2019/03/05/security-advisories-2019-03.html https://hackerone.com/reports/317321 https://lists.debian.org/debian-lts-announce/2020/08/msg00027.html http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00036.html https://access.redhat.com/errata/RHSA-2019:1429 https://blog.rubygems.org/2019/03/05/security-advisories-2019-03.html https://hackerone.com/reports/317321 https://lists.debian.org/debian-lts-announce/2020/08/msg00027.html
CVSS v3.0
Source Entity [email protected]
Severity HIGH
7.4
Attack Vector
NETWORK
Complexity
HIGH
Privileges
N/A
Interaction
NONE
Confidentiality
N/A
Integrity
N/A
Availability
N/A
Scope
UNCHANGED
RAW VECTOR CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H
CVSS v2.0
Source Entity [email protected]
Severity HIGH
8.8
Access Vector
N/A
Authentication
N/A
RAW VECTOR AV:N/AC:M/Au:N/C:N/I:C/A:C

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2019-8320 Exploits & PoCs (Proof Of Concept)

No public PoCs found in our database for this CVE.

MODIFIED

Vulnerability data or affected products updated.

PUBLISHED

Vulnerability first announced in NVD.

Attack Vector Matrix

Access Vector NETWORK
Complexity HIGH
Privileges N/A
Interaction NONE
CVSS Vector String CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H

Affected Stack

No specific products linked.