Two vulnerabilities in Irssi

Published: 2017-06-07

Risk	Low
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2017-9468 CVE-2017-9469
CWE-ID	CWE-476 CWE-119
Exploitation vector	Network
Public exploit	N/A
Vulnerable software Subscribe	Irssi Client/Desktop applications / Messaging software
Vendor	Irssi.org

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Null pointer dereference

EUVDB-ID: #VU6954

Risk: Low

CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2017-9468

CWE-ID: CWE-476 - NULL Pointer Dereference

Exploit availability: No

Description

The vulnerability allows a remote attacker to cause DoS condition on the target system.

The weakness exists due to NULL pointer dereference. A remote attacker can return a specially crafted DCC message without a source nick or host value and cause the application to crash.

Successful exploitation of the vulnerability results in denial of service.

Mitigation

Update to version 1.0.3.

Vulnerable software versions

Irssi: 0.8.0 - 1.0.2

External links

http://irssi.org/security/irssi_sa_2017_06.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.

2) Memory corruption

EUVDB-ID: #VU6955