Out-of-bounds read in Irssi

1) Out-of-bounds read

EUVDB-ID: #VU32047

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-2017-15228

CWE-ID: CWE-125 - Out-of-bounds read

Exploit availability: No

Description

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

Irssi before 1.0.5, when installing themes with unterminated colour formatting sequences, may access data beyond the end of the string.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Irssi: 1.0.0 - 1.0.4

CPE2.3

• cpe:2.3:a:irssi_org:irssi:1.0.0:*:*:*:*:*:*:*
• cpe:2.3:a:irssi_org:irssi:1.0.1:*:*:*:*:*:*:*
• cpe:2.3:a:irssi_org:irssi:1.0.2:*:*:*:*:*:*:*

External links

https://openwall.com/lists/oss-security/2017/10/22/4
https://irssi.org/security/irssi_sa_2017_10.txt
https://lists.debian.org/debian-lts-announce/2017/12/msg00022.html
https://www.debian.org/security/2017/dsa-4016

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.