CVE-2017-15118

CRITICAL
New! CVE Severity Now Using CVSS v3

The calculated severity for CVEs has been updated to use CVSS v3 by default. CVEs that do not have a CVSS v3 score will fall back CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.

Description

A stack-based buffer overflow vulnerability was found in NBD server implementation in qemu before 2.11 allowing a client to request an export name of size up to 4096 bytes, which in fact should be limited to 256 bytes, causing an out-of-bounds stack write in the qemu process. If NBD server requires TLS, the attacker cannot trigger the buffer overflow without first successfully negotiating TLS.

References

http://www.openwall.com/lists/oss-security/2017/11/28/8

http://www.securityfocus.com/bid/101975

https://access.redhat.com/errata/RHSA-2018:1104

https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-15118

https://lists.gnu.org/archive/html/qemu-devel/2017-11/msg05045.html

https://usn.ubuntu.com/3575-1/

https://www.exploit-db.com/exploits/43194/

Details

Source: MITRE

Published: 2018-07-27

Updated: 2019-10-09

Type: CWE-787

Risk Information

CVSS v2

Base Score: 7.5

Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P

Impact Score: 6.4

Exploitability Score: 10

Severity: HIGH

CVSS v3

Base Score: 9.8

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

Impact Score: 5.9

Exploitability Score: 3.9

Severity: CRITICAL

Tenable Plugins

View all (3 total)

IDNameProductFamilySeverity
109070RHEL 7 : Virtualization (RHSA-2018:1104)NessusRed Hat Local Security Checks
critical
107145Ubuntu 14.04 LTS / 16.04 LTS : qemu regression (USN-3575-2)NessusUbuntu Local Security Checks
critical
106927Ubuntu 14.04 LTS / 16.04 LTS / 17.10 : qemu vulnerabilities (USN-3575-1)NessusUbuntu Local Security Checks
critical