Home/CVE/Buffer overflow in the pcnet_receive function in hw/net/pcnet.c in QEMU, when a guest NIC has a larger MTU, allows remot
CVE

CVE-2015-7512

Buffer overflow in the pcnet_receive function in hw/net/pcnet.c in QEMU, when a guest NIC has a larger MTU, allows remot

Buffer overflow in the pcnet_receive function in hw/net/pcnet.c in QEMU, when a guest NIC has a larger MTU, allows remote attackers to cause a denial of service (guest OS crash) or execute arbitrary code via a large packet.

CRITICAL · CVSS 9 EPSS 0.2106
Schedule remediation
  • EPSS ≥ 0.10 - elevated exploitation probability
  • EPSS percentile: top 4% of all CVEs by exploitation likelihood
  • CVSS base score ≥ 7.0
Sigma rules10 YARA rules0
⬡

Weakness Classification

CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
▤

Affected Products & Versions

9
qemu<= 2.4.1
qemuall versions
redhat enterprise linux desktopall versions
redhat enterprise linux eusall versions
redhat enterprise linux workstationall versions
redhat openstackall versions
redhat virtualizationall versions
debian linuxall versions
◈

Sigma Hunt Rules

10
Exact rules name this CVE ID. Product rules name an affected product in their title. Related rules cover techniques used by actors who exploited this CVE. Showing the most relevant matches; the complete related set is on the full drill-down.
productmediumPotentially Suspicious Usage Of Qemu
productcriticalLinux Reverse Shell Indicator
producthighCommunication To LocaltoNet Tunneling Service Initiated - Linux
producthighPotentially Suspicious Malware Callback Communication - Linux
producthighLinux Crypto Mining Pool Connections
producthighCommunication To Ngrok Tunneling Service - Linux
▣

Scoring & Timeline

9
CRITICAL · CVSS v3.1 · secalert@redhat.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD08 Jan 2016 · 09:59 PM
CVSS VectorCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
⚑

Vendor Advisories

14
suse-csafopenSUSE-SU-2024:10196-1
suse-csafSUSE-SU-2016:1745-1
suse-csafSUSE-SU-2016:1318-1
suse-csafSUSE-SU-2016:1154-1
suse-csafSUSE-SU-2016:0955-1
🔗

References & Sources

12
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://git.qemu.org/?p=qemu.git
http://rhn.redhat.com/errata/RHSA-2015-2694.htmlThird Party Advisory
http://rhn.redhat.com/errata/RHSA-2015-2695.htmlThird Party Advisory
http://rhn.redhat.com/errata/RHSA-2015-2696.htmlThird Party Advisory
http://www.debian.org/security/2016/dsa-3469Third Party Advisory
http://www.debian.org/security/2016/dsa-3470Third Party Advisory
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