CVE-2017-15118

high-risk
Published 2018-07-27

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.

Do I need to act?

~
1.6% chance of exploitation in next 30 days
EPSS score — moderate exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
!
1 public exploit available
43194
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
8
CVSS 8.3/10 High
NETWORK / LOW complexity

Affected Products (5)

Affected Vendors

Redhat Canonical Qemu

References (14)

Mailing List http://www.openwall.com/lists/oss-security/2017/11/28/8
Third Party Advisory http://www.securityfocus.com/bid/101975
Third Party Advisory https://access.redhat.com/errata/RHSA-2018:1104
Issue Tracking https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-15118
Exploit https://lists.gnu.org/archive/html/qemu-devel/2017-11/msg05045.html
Third Party Advisory https://usn.ubuntu.com/3575-1/
Exploit https://www.exploit-db.com/exploits/43194/
Mailing List http://www.openwall.com/lists/oss-security/2017/11/28/8
Third Party Advisory http://www.securityfocus.com/bid/101975
Third Party Advisory https://access.redhat.com/errata/RHSA-2018:1104
Issue Tracking https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-15118
Exploit https://lists.gnu.org/archive/html/qemu-devel/2017-11/msg05045.html
Third Party Advisory https://usn.ubuntu.com/3575-1/
Exploit https://www.exploit-db.com/exploits/43194/
52
/ 100
high-risk
Severity 29/34 · Critical
Exploitability 11/34 · Low
Exposure 12/34 · Low