Debian update for libidn2-0

1) Integer overflow

EUVDB-ID: #VU8647

Risk: High

CVSSv4.0: 6.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2017-14062

CWE-ID: CWE-190 - Integer overflow

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to integer overflow in the decode_digit function in puny_decode.c in Libidn2 before 2.0.4. A remote attacker can cause a denial of service or possibly have unspecified other impact.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Update the affected package to version: 0.10-2+deb8u1, 0.16-1+deb9u1, 2.0.2-4, 2.0.2-4.

Vulnerable software versions

Debian Linux: All versions

CPE2.3

• cpe:2.3:o:debian:debian_linux:*:*:*:*:*:*:*:*

External links

https://www.debian.org/security/2017/dsa-3988

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.