CVE-2019-5606 — HIGH (7.8) — White Hats Nepal

Vulnerability Description

In FreeBSD 12.0-STABLE before r349805, 12.0-RELEASE before 12.0-RELEASE-p8, 11.3-STABLE before r349806, 11.3-RELEASE before 11.3-RELEASE-p1, and 11.2-RELEASE before 11.2-RELEASE-p12, code which handles close of a descriptor created by posix_openpt fails to undo a signal configuration. This causes an incorrect signal to be raised leading to a write after free of kernel memory allowing a malicious user to gain root privileges or escape a jail.

CVSS Score

7.8

HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Freebsd	Freebsd	11.0

Related Weaknesses (CWE)

CWE-416

References

http://packetstormsecurity.com/files/153748/FreeBSD-Security-Advisory-FreeBSD-SAThird Party AdvisoryVDB Entry
https://security.FreeBSD.org/advisories/FreeBSD-SA-19:13.pts.ascVendor Advisory
https://security.netapp.com/advisory/ntap-20190814-0003/Third Party Advisory
http://packetstormsecurity.com/files/153748/FreeBSD-Security-Advisory-FreeBSD-SAThird Party AdvisoryVDB Entry
https://security.FreeBSD.org/advisories/FreeBSD-SA-19:13.pts.ascVendor Advisory
https://security.netapp.com/advisory/ntap-20190814-0003/Third Party Advisory

FAQ

What is CVE-2019-5606?

CVE-2019-5606 is a vulnerability with a CVSS score of 7.8 (HIGH). In FreeBSD 12.0-STABLE before r349805, 12.0-RELEASE before 12.0-RELEASE-p8, 11.3-STABLE before r349806, 11.3-RELEASE before 11.3-RELEASE-p1, and 11.2-RELEASE before 11.2-RELEASE-p12, code which handle...

How severe is CVE-2019-5606?

CVE-2019-5606 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2019-5606?

Check the references section above for vendor advisories and patch information. Affected products include: Freebsd Freebsd.