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
EPSS: 0.001 (18.4th percentile) — read the EPSS interpretation.
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.
Affected products
- Qemu
- Canonical Ubuntu_linux — versions 12.04, 14.04, 15.10
- Debian Debian_linux — versions 8.0
- Redhat Enterprise_linux — versions 7.0, 6.0
- Redhat Enterprise_linux_desktop — versions 6.0, 7.0
- Redhat Enterprise_linux_eus — versions 7.3, 7.4, 7.5
- Redhat Enterprise_linux_server — versions 6.0, 7.0
- Redhat Enterprise_linux_server_aus — versions 7.3, 7.4, 7.6
- Redhat Enterprise_linux_server_tus — versions 7.3, 7.6, 7.7
- Redhat Enterprise_linux_workstation — versions 6.0, 7.0
Weakness classification (CWE)
References
- RHSA-2017:0334 (x_refsource_REDHAT, vendor-advisory, Third Party Advisory)
- RHSA-2016:2671 (x_refsource_REDHAT, vendor-advisory, Third Party Advisory)
- RHSA-2017:0083 (x_refsource_REDHAT, vendor-advisory, Third Party Advisory)
- [oss-security] 20160303 CVE request Qemu: net: out of bounds read in net_checksum_calculate (mailing-list, x_refsource_MLIST, Mailing List, Third Party Advisory)
- RHSA-2016:2706 (x_refsource_REDHAT, vendor-advisory, Third Party Advisory)
- [oss-security] 20160306 Re: CVE request Qemu: net: out of bounds read in net_checksum_calculate (mailing-list, x_refsource_MLIST, Mailing List, Third Party Advisory)
- 84130 (Third Party Advisory, VDB Entry, vdb-entry, x_refsource_BID)
- RHSA-2017:0350 (x_refsource_REDHAT, vendor-advisory, Third Party Advisory)
- RHSA-2016:2705 (x_refsource_REDHAT, vendor-advisory, Third Party Advisory)
- USN-2974-1 (x_refsource_UBUNTU, 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.