#VU31440 Out-of-bounds read in Irssi - CVE-2017-5195

Vulnerability identifier: #VU31440

Vulnerability risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2017-5195

CWE-ID: CWE-125

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Irssi
Client/Desktop applications / Messaging software

Vendor: Irssi.org

Description

The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.

Irssi 0.8.17 before 0.8.21 allows remote attackers to cause a denial of service (out-of-bounds read and crash) via a crafted ANSI x8 color code.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Irssi: 0.8.17 beta - 0.8.20

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External links
https://www.openwall.com/lists/oss-security/2017/01/06/1
https://www.securityfocus.com/bid/95310
https://irssi.org/security/irssi_sa_2017_01.txt
https://security.gentoo.org/glsa/201701-45

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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.