Remote code execution in Transmission

1) Use-after-free

EUVDB-ID: #VU28196

Risk: High

CVSSv4.0: 6.1 [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/E:U/U:Amber]

CVE-ID: CVE-2018-10756

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a use-after-free error within the libtransmission/variant.c in Transmission. A remote attacker can create a specially crafted .torrent file, trick the victim into opening it, trigger a use-after-free error and execute arbitrary code on the target system.

Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Transmission: 0.5 - 2.94

CPE2.3

• cpe:2.3:a:transmission_project:transmission:0.5:*:*:*:*:*:*:*
• cpe:2.3:a:transmission_project:transmission:0.6:*:*:*:*:*:*:*
• cpe:2.3:a:transmission_project:transmission:0.6.1:*:*:*:*:*:*:*

External links

https://github.com/transmission/transmission/commit/2123adf8e5e1c2b48791f9d22fc8c747e974180e
https://lists.debian.org/debian-lts-announce/2020/05/msg00022.html
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/OVAG2HNKNRLWOACFN5F2ANJD2SQ53WI7/
https://tomrichards.net/2020/05/cve-2018-10756-transmission/

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.