#VU11471 Buffer over-read in Irssi - CVE-2018-5205

Vulnerability identifier: #VU11471

Vulnerability risk: Low

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2018-5205

CWE-ID: CWE-126

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Irssi
Client/Desktop applications / Messaging software

Vendor: Irssi.org

Description
The vulnerability allows a remote attacker to obtain potentially sensitive information on the target system.

The weakness exists due to data access beyond the end of the string when using incomplete escape codes. A remote attacker can trigger buffer over-read and gain access to potentially sensitive information.

Mitigation
Update to version 1.0.6.

Vulnerable software versions

Irssi: 1.0.0 - 1.0.5

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External links
https://irssi.org/security/irssi_sa_2018_01.txt

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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.