Vulnerability 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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Qemu | Qemu | < 2.11 |
| Canonical | Ubuntu Linux | 14.04 |
| Redhat | Enterprise Linux | 7.0 |
Related Weaknesses (CWE)
References
- http://www.openwall.com/lists/oss-security/2017/11/28/8Mailing ListPatchThird Party Advisory
- http://www.securityfocus.com/bid/101975Third Party AdvisoryVDB Entry
- https://access.redhat.com/errata/RHSA-2018:1104Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-15118Issue TrackingPatchThird Party Advisory
- https://lists.gnu.org/archive/html/qemu-devel/2017-11/msg05045.htmlExploitPatchThird Party Advisory
- https://usn.ubuntu.com/3575-1/Third Party Advisory
- https://www.exploit-db.com/exploits/43194/ExploitThird Party AdvisoryVDB Entry
- http://www.openwall.com/lists/oss-security/2017/11/28/8Mailing ListPatchThird Party Advisory
- http://www.securityfocus.com/bid/101975Third Party AdvisoryVDB Entry
- https://access.redhat.com/errata/RHSA-2018:1104Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-15118Issue TrackingPatchThird Party Advisory
- https://lists.gnu.org/archive/html/qemu-devel/2017-11/msg05045.htmlExploitPatchThird Party Advisory
- https://usn.ubuntu.com/3575-1/Third Party Advisory
- https://www.exploit-db.com/exploits/43194/ExploitThird Party AdvisoryVDB Entry
FAQ
What is CVE-2017-15118?
CVE-2017-15118 is a vulnerability with a CVSS score of 8.3 (HIGH). 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 lim...
How severe is CVE-2017-15118?
CVE-2017-15118 has been rated HIGH with a CVSS base score of 8.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2017-15118?
Check the references section above for vendor advisories and patch information. Affected products include: Qemu Qemu, Canonical Ubuntu Linux, Redhat Enterprise Linux.