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.

References

http://www.openwall.com/lists/oss-security/2017/11/28/8

http://www.securityfocus.com/bid/101975

https://access.redhat.com/errata/RHSA-2018:1104

https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-15118

https://lists.gnu.org/archive/html/qemu-devel/2017-11/msg05045.html

https://usn.ubuntu.com/3575-1/

https://www.exploit-db.com/exploits/43194/

Details

Risk Information

CVSS v2

CVSS v3