What is CVE-2018-17156?

CVE-2018-17156 is a medium-severity vulnerability in Freebsd, classified under Out-of-bounds Write. CVSS score: 5.9/10. Published 2018-11-28.

How severe is CVE-2018-17156?

Medium severity. CVSS v3 base score is 5.9 out of 10.

Buffer overflow in Freebsd

CVE-2018-17156

In FreeBSD before 11.2-STABLE(r340268) and 11.2-RELEASE-p5, due to incorrectly accounting for padding on 64-bit platforms, a buffer underwrite could occur when constructing an ICMP reply packet when using a non-standard value for the net.inet.icmp.quotelen sysctl.

Vulnerability class: Buffer Overflow

EPSS: 0.016 (73.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Freebsd — versions 11.2, FreeBSD 11.2 before 11.2-RELEASE-p5

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

secteam@freebsd.org (x_refsource_CONFIRM, Exploit, Mitigation, Vendor Advisory)
secteam@freebsd.org (VDB Entry, Third Party Advisory, vdb-entry, x_refsource_BID)

Frequently asked questions

What is CVE-2018-17156?: CVE-2018-17156 is a medium-severity vulnerability in Freebsd, classified under Out-of-bounds Write. CVSS score: 5.9/10. Published 2018-11-28.
How severe is CVE-2018-17156?: Medium severity. CVSS v3 base score is 5.9 out of 10.