Medium severity · published May 10, 2019
CVE-2019-11879
The WEBrick gem 1.4.2 for Ruby allows directory traversal if the attacker once had local access to create a symlink to a location outside of the web root directory
5.5
CVSS
0.5%
EPSS
No
On KEV
Description
The WEBrick gem 1.4.2 for Ruby allows directory traversal if the attacker once had local access to create a symlink to a location outside of the web root directory. NOTE: The vendor states that this is analogous to Options FollowSymlinks in the Apache HTTP Server, and therefore it is "not a problem.
CVSS vector
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 46% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
WE
Webrick · Ruby-lang
1.4.2 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2019-11879
CVE.org
https://www.cve.org/CVERecord?id=CVE-2019-11879
Issue Tracking
https://bugs.ruby-lang.org/issues/15835
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