Buffer overflow in Qemu
CVE-2017-15118
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.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.3 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L.
EPSS exploit prediction
EPSS: 0.119 (96.0th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 96th percentile — 96.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.119 · newest: 0.119 · change: 0.000
Affected products
- Qemu — versions 2.11
- Canonical Ubuntu Linux — versions 14.04, 16.04, 17.10
- Red Hat Enterprise Linux — versions 7.0
Weakness classification (CWE)
References
- bugzilla.redhat.com/show_bug.cgi (Patch, Third Party Advisory, Issue Tracking)
- access.redhat.com/errata/RHSA-2018:1104 (vendor-advisory, Third Party Advisory)
- lists.gnu.org/archive/html/qemu-devel/2017-11/msg05045.html (Exploit, Patch, Third Party Advisory)
- usn.ubuntu.com/3575-1/ (vendor-advisory, Third Party Advisory)
- www.securityfocus.com/bid/101975 (VDB Entry, Third Party Advisory, vdb-entry)
- www.openwall.com/lists/oss-security/2017/11/28/8 (Patch, Mailing List, Third Party Advisory)
- www.exploit-db.com/exploits/43194/ (Exploit, VDB Entry, Third Party Advisory, exploit)
Frequently asked questions
- What is CVE-2017-15118?
- CVE-2017-15118 is a high-severity vulnerability in Qemu, classified under Stack-based Buffer Overflow. CVSS score: 8.3/10. Published 2018-07-27.
- How severe is CVE-2017-15118?
- High severity. CVSS v3 base score is 8.3 out of 10.