Buffer overflow in Qemu
CVE-2016-2857
The net_checksum_calculate function in net/checksum.c in QEMU allows local guest OS users to cause a denial of service (out-of-bounds heap read and crash) via the payload length in a crafted packet.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.4 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:H.
EPSS exploit prediction
EPSS: 0.006 (44.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 45th percentile — 44.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000
Affected products
- Qemu
- Canonical Ubuntu Linux — versions 12.04, 14.04, 15.10
- Debian Linux — versions 8.0
- Red Hat Enterprise Linux — versions 7.0, 6.0
- Red Hat Enterprise Linux Desktop — versions 6.0, 7.0
- Red Hat Enterprise Linux Eus — versions 7.3, 7.4, 7.5
- Red Hat Enterprise Linux Server — versions 6.0, 7.0
- Red Hat Enterprise Linux Server Aus — versions 7.3, 7.4, 7.6
- Red Hat Enterprise Linux Server Tus — versions 7.3, 7.6, 7.7
- Red Hat Enterprise Linux Workstation — versions 6.0, 7.0
Weakness classification (CWE)
References
- rhn.redhat.com/errata/RHSA-2017-0334.html (vendor-advisory, Third Party Advisory)
- rhn.redhat.com/errata/RHSA-2016-2671.html (vendor-advisory, Third Party Advisory)
- rhn.redhat.com/errata/RHSA-2017-0083.html (vendor-advisory, Third Party Advisory)
- www.openwall.com/lists/oss-security/2016/03/03/9 (mailing-list, Mailing List, Third Party Advisory)
- rhn.redhat.com/errata/RHSA-2016-2706.html (vendor-advisory, Third Party Advisory)
- www.openwall.com/lists/oss-security/2016/03/07/3 (mailing-list, Mailing List, Third Party Advisory)
- www.securityfocus.com/bid/84130 (VDB Entry, Third Party Advisory, vdb-entry)
- rhn.redhat.com/errata/RHSA-2017-0350.html (vendor-advisory, Third Party Advisory)
- rhn.redhat.com/errata/RHSA-2016-2705.html (vendor-advisory, Third Party Advisory)
- www.ubuntu.com/usn/USN-2974-1 (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2016-2857?
- CVE-2016-2857 is a high-severity vulnerability in Qemu, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 8.4/10. Published 2016-04-12.
- How severe is CVE-2016-2857?
- High severity. CVSS v3 base score is 8.4 out of 10.