#VU46109 UNIX symbolic link following in ark - CVE-2020-24654

Vulnerability identifier: #VU46109

Vulnerability risk: Medium

CVSSv4.0: 4 [CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2020-24654

CWE-ID: CWE-61

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
ark
Client/Desktop applications / Other client software

Vendor: KDE.org

Description

The vulnerability allows a remote attacker to compromise the affected system.

The vulnerability exists due to a symlink following issue when processing .tar archives in KDE ark.  remote attacker can trick the victim to open a specially crafted .tar archive and overwrite arbitrary files on the target system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

ark: 2.6 - 20.07.90

---

External links
https://kde.org/info/security/advisory-20200827-1.txt

---

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.