Out-of-bounds Write Affecting qemu package, versions <1:2.11+dfsg-1


0.0
critical

Snyk CVSS

    Attack Complexity Low
    Confidentiality High
    Integrity High
    Availability High

    Threat Intelligence

    EPSS 2.23% (90th percentile)
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NVD
9.8 critical
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Red Hat
8.3 high

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  • Snyk ID SNYK-DEBIANUNSTABLE-QEMU-428213
  • published 27 Jun 2018
  • disclosed 27 Jul 2018

How to fix?

Upgrade Debian:unstable qemu to version 1:2.11+dfsg-1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream qemu package and not the qemu package as distributed by Debian. See How to fix? for Debian:unstable relevant fixed versions and status.

A stack-based buffer overflow vulnerability was found in NBD server implementation in qemu before 2.11 allowing a client to request an export name of size up to 4096 bytes, which in fact should be limited to 256 bytes, causing an out-of-bounds stack write in the qemu process. If NBD server requires TLS, the attacker cannot trigger the buffer overflow without first successfully negotiating TLS.