Vulnerability identifier: #VU8648
Vulnerability risk: High
CVSSv3.1: 8.3 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-190
Exploitation vector: Network
Exploit availability: No
Vulnerable software:
Libidn2
Universal components / Libraries /
Libraries used by multiple products
Vendor: GNU
Description
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to integer overflow in the _isBidi function in bidi.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
Install update from GIT repository:
https://gitlab.com/libidn/libidn2/commit/16853b6973a1e72fee2b7cccda85472cb9951305
Vulnerable software versions
Libidn2: 2.0.1 - 2.0.3
External links
http://gitlab.com/libidn/libidn2/blob/master/NEWS
http://gitlab.com/libidn/libidn2/commit/16853b6973a1e72fee2b7cccda85472cb9951305
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.