CVE-2017-13721 — MEDIUM (4.7)

Q: How severe is CVE-2017-13721?

CVE-2017-13721 has been rated MEDIUM with a CVSS base score of 4.7/10. Review the CVSS metrics above for detailed severity breakdown.

Q: Is there a patch for CVE-2017-13721?

Check the references section above for vendor advisories and patch information. Affected products include: X.Org X Server, Debian Debian Linux.

Vulnerability Description

In X.Org Server (aka xserver and xorg-server) before 1.19.4, an attacker authenticated to an X server with the X shared memory extension enabled can cause aborts of the X server or replace shared memory segments of other X clients in the same session.

CVSS Score

4.7

MEDIUM

CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack Vector

LOCAL

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

NONE

Availability

HIGH

Affected Products

Vendor	Product	Versions
X.Org	X Server	<= 1.19.3
Debian	Debian Linux	8.0

Related Weaknesses (CWE)

CWE-269

References

http://www.debian.org/security/2017/dsa-4000Third Party Advisory
http://www.openwall.com/lists/oss-security/2017/10/04/10Mailing ListThird Party Advisory
http://www.securityfocus.com/bid/101238Third Party AdvisoryVDB Entry
https://cgit.freedesktop.org/xorg/xserver/commit/?id=b95f25af141d33a65f6f821ea9cThird Party Advisory
https://lists.x.org/archives/xorg-announce/2017-October/002808.htmlVendor Advisory
https://security.gentoo.org/glsa/201710-30Third Party Advisory
http://www.debian.org/security/2017/dsa-4000Third Party Advisory
http://www.openwall.com/lists/oss-security/2017/10/04/10Mailing ListThird Party Advisory
http://www.securityfocus.com/bid/101238Third Party AdvisoryVDB Entry
https://cgit.freedesktop.org/xorg/xserver/commit/?id=b95f25af141d33a65f6f821ea9cThird Party Advisory
https://lists.x.org/archives/xorg-announce/2017-October/002808.htmlVendor Advisory
https://security.gentoo.org/glsa/201710-30Third Party Advisory

FAQ

What is CVE-2017-13721?

CVE-2017-13721 is a vulnerability with a CVSS score of 4.7 (MEDIUM). In X.Org Server (aka xserver and xorg-server) before 1.19.4, an attacker authenticated to an X server with the X shared memory extension enabled can cause aborts of the X server or replace shared memo...

How severe is CVE-2017-13721?

CVE-2017-13721 has been rated MEDIUM with a CVSS base score of 4.7/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2017-13721?

Check the references section above for vendor advisories and patch information. Affected products include: X.Org X Server, Debian Debian Linux.