DescriptionThe VNC websocket frame decoder in QEMU allows remote attackers to cause a denial of service (memory and CPU consumption) via a large (1) websocket payload or (2) HTTP headers section.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
NVD severityhigh
Debian Bugs781250

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
qemu (PTS)stretch1:2.8+dfsg-6+deb9u9fixed
stretch (security)1:2.8+dfsg-6+deb9u11fixed
buster, buster (security)1:3.1+dfsg-8+deb10u8fixed
bullseye, sid1:5.1+dfsg-4fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
qemusourcesqueeze(not affected)
qemusourcewheezy(not affected)
qemu-kvmsource(unstable)(not affected)


[wheezy] - qemu <not-affected> (Websocket protocol support introduced in v1.4.0-rc0)
[squeeze] - qemu <not-affected> (Websocket protocol support introduced in v1.4.0-rc0)
- qemu-kvm <not-affected> (Websocket protocol support introduced in v1.4.0-rc0)
Original patches have problem:;a=commit;h=a2bebfd6e09d;a=commit;h=2cdb5e142fb93

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