7.4 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H
8.8 High
CVSS2
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:N/AC:M/Au:N/C:N/I:C/A:C
0.005 Low
EPSS
Percentile
75.9%
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.
CPE | Name | Operator | Version |
---|---|---|---|
rubygems-update | lt | 3.0.3 | |
rubygems-update | lt | 2.7.9 |
lists.opensuse.org/opensuse-security-announce/2019-07/msg00036.html
access.redhat.com/errata/RHSA-2019:1429
blog.rubygems.org/2019/03/05/security-advisories-2019-03.html
github.com/advisories/GHSA-5x32-c9mf-49cc
github.com/rubysec/ruby-advisory-db/blob/master/gems/rubygems-update/CVE-2019-8320.yml
hackerone.com/reports/317321
lists.debian.org/debian-lts-announce/2020/08/msg00027.html
nvd.nist.gov/vuln/detail/CVE-2019-8320
7.4 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H
8.8 High
CVSS2
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:N/AC:M/Au:N/C:N/I:C/A:C
0.005 Low
EPSS
Percentile
75.9%