Remote code execution in Irssi



Risk High
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2019-15717
CWE-ID CWE-416
Exploitation vector Network
Public exploit N/A
Vulnerable software
 Irssi
Client/Desktop applications / Messaging software

Vendor Irssi.org

Security Bulletin

This security bulletin contains one high risk vulnerability.

1) Use-after-free

EUVDB-ID: #VU20476

Risk: High

CVSSv4.0: 5.7 [CVSS:4.0/AV:L/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-2019-15717

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 when processing responses from IRC server with a double CAP. A remote attacker can trick the victim to connect to a malicious IRC server, trigger 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 updates from vendor's website.

Vulnerable software versions

Irssi: 0.7.16 - 1.2.1

CPE2.3 External links

https://www.openwall.com/lists/oss-security/2019/08/29/3
https://www.openwall.com/lists/oss-security/2019/08/29/5
https://irssi.org/security/irssi_sa_2019_08.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.



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