CVE-2017-15118
HIGH severity · CVSS 8.3 · CWE-121
8.3CVSS HIGH
Summary
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.
Impact & exploitability
Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
Confidentiality impactLow
Integrity impactLow
Availability impactLow
Exploit probability (EPSS)12%
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L
Affected products we track (1)
Recommendation
Apply the vendor fix promptly. Open any affected product above for its exact safe version.
Official patch: http://www.openwall.com/lists/oss-security/2017/11/28/8 ↗
Additional information
- NVD record
- http://www.openwall.com/lists/oss-security/2017/11/28/8Patch
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-15118Patch
- https://lists.gnu.org/archive/html/qemu-devel/2017-11/msg05045.htmlPatch
- http://www.securityfocus.com/bid/101975Advisory
- https://access.redhat.com/errata/RHSA-2018:1104Advisory
- https://usn.ubuntu.com/3575-1/Advisory
- https://www.exploit-db.com/exploits/43194/Advisory