Improper input validation in Qemu
CVE-2016-7907
The imx_fec_do_tx function in hw/net/imx_fec.c in QEMU (aka Quick Emulator) does not properly limit the buffer descriptor count when transmitting packets, which allows local guest OS administrators to cause a denial of service (infinite loop and QEMU process crash) via vectors involving a buffer descriptor with a length of 0 and crafted values in bd.flags.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.4 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.004 (32.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 33rd percentile — 32.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
- Qemu — versions 2.9.0
Weakness classification (CWE)
References
- www.openwall.com/lists/oss-security/2016/10/03/1 (mailing-list, Mailing List, Third Party Advisory)
- security.gentoo.org/glsa/201611-11 (vendor-advisory, Third Party Advisory)
- lists.opensuse.org/opensuse-updates/2016-12/msg00140.html (vendor-advisory, Mailing List, Third Party Advisory)
- lists.gnu.org/archive/html/qemu-devel/2016-09/msg05556.html (Vendor Advisory, mailing-list, Patch, Mailing List)
- www.securityfocus.com/bid/93274 (VDB Entry, Third Party Advisory, vdb-entry)
- www.openwall.com/lists/oss-security/2016/10/03/4 (mailing-list, Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2016-7907?
- CVE-2016-7907 is a medium-severity vulnerability in Qemu, classified under Improper Input Validation. CVSS score: 4.4/10. Published 2016-10-05.
- How severe is CVE-2016-7907?
- Medium severity. CVSS v3 base score is 4.4 out of 10.