Arbitrary code execution in irssi (Alpine package)

1) Arbitrary code execution

EUVDB-ID: #VU632

Risk: High

CVSSv4.0: 8.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2016-7044

CWE-ID: CWE-126 - Buffer over-read

Exploit availability: No

Description

The vulnerability allows a remote user to cause arbitrary code execution on the target system.
The weakness exists due to input validation error. Having tricked the victim into loading specially crafted file attackers can invoke a buffer overflow in format_send_to_gui() and execute arbitrary code.
Successful exploitation of the vulnerability results in arbitrary code execution on the vulnerable system.

Mitigation

Install update from vendor's website.

Vulnerable software versions

irssi (Alpine package): 0.8.17-r0

CPE2.3

• cpe:2.3:a:alpine:irssi_alpine_package:0.8.17-r0:*:*:*:*:alpine_linux:*:3.1

External links

https://git.alpinelinux.org/aports/commit/?id=9efd168e12368c2f2f24d4ba2474d1f18593b917
https://git.alpinelinux.org/aports/commit/?id=b37c51d94a10eb6d1ef13bb1621230713c178057
https://git.alpinelinux.org/aports/commit/?id=085fefb455517f1609a5854eff3fb024b22bcbfb

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.