ID CVE-2018-5702
Summary Transmission through 2.92 relies on X-Transmission-Session-Id (which is not a forbidden header for Fetch) for access control, which allows remote attackers to execute arbitrary RPC commands, and consequently write to arbitrary files, via POST requests to /transmission/rpc in conjunction with a DNS rebinding attack.
References
Vulnerable Configurations
  • cpe:2.3:a:transmissionbt:transmission:2.92
    cpe:2.3:a:transmissionbt:transmission:2.92
  • Debian Linux 7.0
    cpe:2.3:o:debian:debian_linux:7.0
  • Debian Linux 8.0 (Jessie)
    cpe:2.3:o:debian:debian_linux:8.0
  • Debian Linux 9.0
    cpe:2.3:o:debian:debian_linux:9.0
CVSS
Base: 6.8
Impact:
Exploitability:
CWE CWE-264
CAPEC
  • Accessing, Modifying or Executing Executable Files
    An attack of this type exploits a system's configuration that allows an attacker to either directly access an executable file, for example through shell access; or in a possible worst case allows an attacker to upload a file and then execute it. Web servers, ftp servers, and message oriented middleware systems which have many integration points are particularly vulnerable, because both the programmers and the administrators must be in synch regarding the interfaces and the correct privileges for each interface.
  • Leverage Executable Code in Non-Executable Files
    An attack of this type exploits a system's trust in configuration and resource files, when the executable loads the resource (such as an image file or configuration file) the attacker has modified the file to either execute malicious code directly or manipulate the target process (e.g. application server) to execute based on the malicious configuration parameters. Since systems are increasingly interrelated mashing up resources from local and remote sources the possibility of this attack occurring is high. The attack can be directed at a client system, such as causing buffer overrun through loading seemingly benign image files, as in Microsoft Security Bulletin MS04-028 where specially crafted JPEG files could cause a buffer overrun once loaded into the browser. Another example targets clients reading pdf files. In this case the attacker simply appends javascript to the end of a legitimate url for a pdf (http://www.gnucitizen.org/blog/danger-danger-danger/) http://path/to/pdf/file.pdf#whatever_name_you_want=javascript:your_code_here The client assumes that they are reading a pdf, but the attacker has modified the resource and loaded executable javascript into the client's browser process. The attack can also target server processes. The attacker edits the resource or configuration file, for example a web.xml file used to configure security permissions for a J2EE app server, adding role name "public" grants all users with the public role the ability to use the administration functionality. The server trusts its configuration file to be correct, but when they are manipulated, the attacker gains full control.
  • Blue Boxing
    This type of attack against older telephone switches and trunks has been around for decades. A tone is sent by an adversary to impersonate a supervisor signal which has the effect of rerouting or usurping command of the line. While the US infrastructure proper may not contain widespread vulnerabilities to this type of attack, many companies are connected globally through call centers and business process outsourcing. These international systems may be operated in countries which have not upgraded Telco infrastructure and so are vulnerable to Blue boxing. Blue boxing is a result of failure on the part of the system to enforce strong authorization for administrative functions. While the infrastructure is different than standard current applications like web applications, there are historical lessons to be learned to upgrade the access control for administrative functions.
  • Restful Privilege Elevation
    Rest uses standard HTTP (Get, Put, Delete) style permissions methods, but these are not necessarily correlated generally with back end programs. Strict interpretation of HTTP get methods means that these HTTP Get services should not be used to delete information on the server, but there is no access control mechanism to back up this logic. This means that unless the services are properly ACL'd and the application's service implementation are following these guidelines then an HTTP request can easily execute a delete or update on the server side. The attacker identifies a HTTP Get URL such as http://victimsite/updateOrder, which calls out to a program to update orders on a database or other resource. The URL is not idempotent so the request can be submitted multiple times by the attacker, additionally, the attacker may be able to exploit the URL published as a Get method that actually performs updates (instead of merely retrieving data). This may result in malicious or inadvertent altering of data on the server.
  • Target Programs with Elevated Privileges
    This attack targets programs running with elevated privileges. The attacker would try to leverage a bug in the running program and get arbitrary code to execute with elevated privileges. For instance an attacker would look for programs that write to the system directories or registry keys (such as HKLM, which stores a number of critical Windows environment variables). These programs are typically running with elevated privileges and have usually not been designed with security in mind. Such programs are excellent exploit targets because they yield lots of power when they break. The malicious user try to execute its code at the same level as a privileged system call.
  • Manipulating Input to File System Calls
    An attacker manipulates inputs to the target software which the target software passes to file system calls in the OS. The goal is to gain access to, and perhaps modify, areas of the file system that the target software did not intend to be accessible.
exploit-db via4
description Transmission - RPC DNS Rebinding. CVE-2018-5702. Remote exploit for Multiple platform
file exploits/multiple/remote/43665.md
id EDB-ID:43665
last seen 2018-01-24
modified 2018-01-11
platform multiple
port 9091
published 2018-01-11
reporter Exploit-DB
source https://www.exploit-db.com/download/43665/
title Transmission - RPC DNS Rebinding
type remote
nessus via4
  • NASL family Gentoo Local Security Checks
    NASL id GENTOO_GLSA-201806-07.NASL
    description The remote host is affected by the vulnerability described in GLSA-201806-07 (Transmission: Remote code execution) A vulnerability was discovered in how Transmission handles access control through the X-Transmission-Session-Id. Impact : A remote attacker could execute arbitrary RFC commands or consequently conduct a DNS rebinding attack. Workaround : There is no known workaround at this time.
    last seen 2019-02-21
    modified 2018-06-20
    plugin id 110616
    published 2018-06-20
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=110616
    title GLSA-201806-07 : Transmission: Remote code execution
  • NASL family Debian Local Security Checks
    NASL id DEBIAN_DSA-4087.NASL
    description Tavis Ormandy discovered a vulnerability in the Transmission BitTorrent client; insecure RPC handling between the Transmission daemon and the client interface(s) may result in the execution of arbitrary code if a user visits a malicious website while Transmission is running.
    last seen 2019-02-21
    modified 2018-11-13
    plugin id 105802
    published 2018-01-15
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=105802
    title Debian DSA-4087-1 : transmission - security update
  • NASL family Ubuntu Local Security Checks
    NASL id UBUNTU_USN-3533-1.NASL
    description It was discovered that Transmission incorrectly handled certain POST requests to the RPC server and allowed DNS rebinding attack. An attacker could possibly use this issue to execute arbitrary code. Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
    last seen 2019-02-21
    modified 2018-12-01
    plugin id 106096
    published 2018-01-17
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=106096
    title Ubuntu 14.04 LTS / 16.04 LTS / 17.10 : transmission vulnerability (USN-3533-1)
  • NASL family Fedora Local Security Checks
    NASL id FEDORA_2018-D1E263E68E.NASL
    description Security fix for CVE-2018-5702 (Mitigate dns rebinding attacks against daemon) Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
    last seen 2019-02-21
    modified 2018-02-12
    plugin id 106113
    published 2018-01-18
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=106113
    title Fedora 27 : transmission (2018-d1e263e68e)
  • NASL family Debian Local Security Checks
    NASL id DEBIAN_DLA-1246.NASL
    description Tavis Ormandy discovered a vulnerability in the Transmission BitTorrent client; insecure RPC handling between the Transmission daemon and the client interface(s) may result in the execution of arbitrary code if a user visits a malicious website while Transmission is running. For Debian 7 'Wheezy', these problems have been fixed in version 2.52-3+nmu3. We recommend that you upgrade your transmission packages. NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
    last seen 2019-02-21
    modified 2018-07-06
    plugin id 106173
    published 2018-01-19
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=106173
    title Debian DLA-1246-1 : transmission security update
  • NASL family Amazon Linux Local Security Checks
    NASL id ALA_ALAS-2018-950.NASL
    description Transmission relies on X-Transmission-Session-Id (which is not a forbidden header for Fetch) for access control, which allows remote attackers to execute arbitrary RPC commands, and consequently write to arbitrary files, via POST requests to /transmission/rpc in conjunction with a DNS rebinding attack. (CVE-2018-5702)
    last seen 2019-02-21
    modified 2018-04-18
    plugin id 106695
    published 2018-02-09
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=106695
    title Amazon Linux AMI : transmission (ALAS-2018-950)
refmap via4
debian DSA-4087
exploit-db 43665
gentoo GLSA-201806-07
misc
mlist [debian-lts-announce] 20180118 [SECURITY] [DLA 1246-1] transmission security update
the hacker news via4
id THN:8765E8456C091FCC37F23EF475C3585D
last seen 2018-01-27
modified 2018-01-16
published 2018-01-15
reporter Swati Khandelwal
source https://thehackernews.com/2018/01/bittorent-transmission-hacking.html
title Flaw in Popular Transmission BitTorrent Client Lets Hackers Control Your PC Remotely
Last major update 15-01-2018 - 11:29
Published 15-01-2018 - 11:29
Last modified 26-03-2019 - 14:17
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