CVE-2018-6917
In FreeBSD before 11.1-STABLE, 11.1-RELEASE-p9, 10.4-STABLE, 10.4-RELEASE-p8 and 10.3-RELEASE-p28, insufficient validation of user-provided font parameters can result in an integer overflow, leading to the use of arbitrary kernel memory as glyph data.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.99%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
In FreeBSD before 11.1-STABLE, 11.1-RELEASE-p9, 10.4-STABLE, 10.4-RELEASE-p8 and 10.3-RELEASE-p28, insufficient validation of user-provided font parameters can result in an integer overflow, leading to the use of arbitrary kernel memory as glyph data. Unprivileged users may be able to access privileged kernel data.
- CVSS 3.0
- 7.5 HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- EPSS
- 1.99% probability · 80th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-190
- Affected
- freebsd/freebsd
- Source
- secteam@freebsd.org
References
- http://www.securityfocus.com/bid/103668Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1040629Third Party Advisory, VDB Entry
- https://security.FreeBSD.org/advisories/FreeBSD-SA-18:04.vt.ascVendor Advisory
- http://www.securityfocus.com/bid/103668Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1040629Third Party Advisory, VDB Entry
- https://security.FreeBSD.org/advisories/FreeBSD-SA-18:04.vt.ascVendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.