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…
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 11.9%, higher than 96% of all known CVEs. Patch or mitigate before the next change window.
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 3.0
- 9.8 CRITICALCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 11.93% probability · 96th percentile
- Public exploits
- 1 in Exploit-DB · verified · first 29 November 2017
- CISA KEV
- Not listed
- Weakness
- CWE-121, CWE-787
- Affected
- qemu/qemu · canonical/ubuntu linux · redhat/enterprise linux
- Source
- secalert@redhat.com
EPSS 11.9% since 27 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
Public exploits (1)
Entries in Exploit-DB that cite this CVE. Links go to the Exploit-DB page and to the file in the public repository; nothing is hosted here. A verified tick means the Exploit-DB team confirmed the exploit works against the stated version.
References
- http://www.openwall.com/lists/oss-security/2017/11/28/8Mailing List, Patch, Third Party Advisory
- http://www.securityfocus.com/bid/101975Third Party Advisory, VDB Entry
- https://access.redhat.com/errata/RHSA-2018:1104Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-15118Issue Tracking, Patch, Third Party Advisory
- https://lists.gnu.org/archive/html/qemu-devel/2017-11/msg05045.htmlExploit, Patch, Third Party Advisory
- https://usn.ubuntu.com/3575-1/Third Party Advisory
- https://www.exploit-db.com/exploits/43194/Exploit, Third Party Advisory, VDB Entry
- http://www.openwall.com/lists/oss-security/2017/11/28/8Mailing List, Patch, Third Party Advisory
- http://www.securityfocus.com/bid/101975Third Party Advisory, VDB Entry
- https://access.redhat.com/errata/RHSA-2018:1104Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-15118Issue Tracking, Patch, Third Party Advisory
- https://lists.gnu.org/archive/html/qemu-devel/2017-11/msg05045.htmlExploit, Patch, Third Party Advisory
- https://usn.ubuntu.com/3575-1/Third Party Advisory
- https://www.exploit-db.com/exploits/43194/Exploit, Third Party Advisory, VDB Entry
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.