ID CVE-2018-13415
Summary In Plex Media Server 1.13.2.5154, the XML parsing engine for SSDP/UPnP functionality is vulnerable to an XML External Entity Processing (XXE) attack. Remote, unauthenticated attackers can use this vulnerability to: (1) Access arbitrary files from the filesystem with the same permission as the user account running Plex, (2) Initiate SMB connections to capture a NetNTLM challenge/response and crack to cleartext password, or (3) Initiate SMB connections to relay a NetNTLM challenge/response and achieve Remote Command Execution in Windows domains.
References
Vulnerable Configurations
  • cpe:2.3:a:plex:media_server:1.13.2.5154:*:*:*:*:*:*:*
    cpe:2.3:a:plex:media_server:1.13.2.5154:*:*:*:*:*:*:*
CVSS
Base: 7.5 (as of 18-10-2018 - 17:46)
Impact:
Exploitability:
CWE CWE-611
CAPEC
  • XML External Entities Blowup
    This attack takes advantage of the entity replacement property of XML where the value of the replacement is a URI. A well-crafted XML document could have the entity refer to a URI that consumes a large amount of resources to create a denial of service condition. This can cause the system to either freeze, crash, or execute arbitrary code depending on the URI.
Access
VectorComplexityAuthentication
NETWORK LOW NONE
Impact
ConfidentialityIntegrityAvailability
PARTIAL PARTIAL PARTIAL
cvss-vector via4 AV:N/AC:L/Au:N/C:P/I:P/A:P
refmap via4
exploit-db 45146
fulldisc 20180802 (CVE-2018-13415) Out-of-Band XXE in Plex Media Server
Last major update 18-10-2018 - 17:46
Published 13-08-2018 - 17:29
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