CVE-2018-20191
HIGH severity · CVSS 7.5 · CWE-476
7.5CVSS HIGH
Summary
hw/rdma/vmw/pvrdma_main.c in QEMU does not implement a read operation (such as uar_read by analogy to uar_write), which allows attackers to cause a denial of service (NULL pointer dereference).
Impact & exploitability
Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
Confidentiality impactNone
Integrity impactNone
Availability impactHigh
Exploit probability (EPSS)4%
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
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/2018/12/18/1 ↗
Additional information
- NVD record
- http://www.openwall.com/lists/oss-security/2018/12/18/1Patch
- https://lists.gnu.org/archive/html/qemu-devel/2018-12/msg03066.htmlPatch
- http://www.securityfocus.com/bid/106276Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CGCFIFSIWUREEQQOZDZFBYKWZHXCWBZN/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KJMTVGDLA654HNCDGLCUEIP36SNJEKK7/
- https://usn.ubuntu.com/3923-1/Advisory