Command injection in Transmission - CVE-2018-5702

CSH
CYBERSECURITY HELP
Sign In REGISTER
 
Main Vulnerability Database Vulnerabilities #VU13403

Command injection in Transmission - CVE-2018-5702

Published: June 20, 2018 / Updated: June 21, 2018


Vulnerability identifier: #VU13403
CSH Severity: High
CVSS v4: 8.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2018-5702
CWE-ID: CWE-77
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to execute arbitrary RPC commands on the target system.

The vulnerability exists in the Remote Procedure Call (RPC) session-id mechanism in Transmission due to bthe affected software uses the X-Transmission-Session-Id header for access control. A remote unauthenticated attacker can conduct a DNS rebinding attack, register a domain name and make it resolve to localhost, then delegate the domain name to an attacker-controlled DNS server that is configured to respond with a short time-to-live (TTL) record, trick the victim into following a link that submits malicious input, execute arbitrary RPC commands and arbitrary code with elevated privileges.

Successful exploitation of the vulnerability may result in system compromise.


Affected software

Transmission
Gentoo Linux
Arch Linux
Amazon Linux AMI
Fedora
Ubuntu
transmission

How to mitigate CVE-2018-5702

Install update from vendor's website.

transmission - addressed in versions 2.92-11.el7, 2.92-11.fc26, 2.92-11.fc27, 2.92-12.el7, 2.92-12.fc26, 2.94-6.el7

External References

Related Security Bulletins