Buffer overflow in FreeBSD

1) Buffer overflow

EUVDB-ID: #VU35766

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-2019-5600

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to execute arbitrary code.

In FreeBSD 12.0-STABLE before r349622, 12.0-RELEASE before 12.0-RELEASE-p7, 11.3-PRERELEASE before r349624, 11.3-RC3 before 11.3-RC3-p1, and 11.2-RELEASE before 11.2-RELEASE-p11, a bug in iconv implementation may allow an attacker to write past the end of an output buffer. Depending on the implementation, an attacker may be able to create a denial of service, provoke incorrect program behavior, or induce a remote code execution.

Mitigation

Install update from vendor's website.

Vulnerable software versions

FreeBSD: 11.2 - 12.0

CPE2.3

• cpe:2.3:o:freebsd_foundation:freebsd:11.2:*:*:*:*:*:*:*
• cpe:2.3:o:freebsd_foundation:freebsd:11.3:*:*:*:*:*:*:*
• cpe:2.3:o:freebsd_foundation:freebsd:12.0:*:*:*:*:*:*:*

External links

https://packetstormsecurity.com/files/153520/FreeBSD-Security-Advisory-FreeBSD-SA-19-09.iconv.html
https://security.FreeBSD.org/advisories/FreeBSD-SA-19:09.iconv.asc

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.