ID CVE-2015-8745
Summary QEMU (aka Quick Emulator) built with a VMWARE VMXNET3 paravirtual NIC emulator support is vulnerable to crash issue. It could occur while reading Interrupt Mask Registers (IMR). A privileged (CAP_SYS_RAWIO) guest user could use this flaw to crash the QEMU process instance resulting in DoS.
References
Vulnerable Configurations
  • cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:*
    cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:*
CVSS
Base: 2.1 (as of 04-11-2017 - 01:29)
Impact:
Exploitability:
CWE CWE-284
CAPEC
  • Embedding Scripts within Scripts
    An attack of this type exploits a programs' vulnerabilities that are brought on by allowing remote hosts to execute scripts. The attacker leverages this capability to execute scripts to execute his/her own script by embedding it within other scripts that the target software is likely to execute. The attacker must have the ability to inject script into script that is likely to be executed. If this is done, then the attacker can potentially launch a variety of probes and attacks against the web server's local environment, in many cases the so-called DMZ, back end resources the web server can communicate with, and other hosts. With the proliferation of intermediaries, such as Web App Firewalls, network devices, and even printers having JVMs and Web servers, there are many locales where an attacker can inject malicious scripts. Since this attack pattern defines scripts within scripts, there are likely privileges to execute said attack on the host. Of course, these attacks are not solely limited to the server side, client side scripts like Ajax and client side JavaScript can contain malicious scripts as well. In general all that is required is for there to be sufficient privileges to execute a script, but not protected against writing.
  • Signature Spoofing by Key Theft
    An attacker obtains an authoritative or reputable signer's private signature key by theft and then uses this key to forge signatures from the original signer to mislead a victim into performing actions that benefit the attacker.
Access
VectorComplexityAuthentication
LOCAL LOW NONE
Impact
ConfidentialityIntegrityAvailability
NONE NONE PARTIAL
cvss-vector via4 AV:L/AC:L/Au:N/C:N/I:N/A:P
refmap via4
bid 79822
confirm
debian DSA-3471
gentoo GLSA-201602-01
mlist
  • [oss-security] 20160104 CVE request Qemu: net: vmxnet3: reading IMR registers leads to a crash
  • [oss-security] 20160104 Re: CVE request Qemu: net: vmxnet3: reading IMR registers leads to a crash
sectrack 1034575
Last major update 04-11-2017 - 01:29
Published 29-12-2016 - 22:59
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