CVE-2018-7550

NameCVE-2018-7550
DescriptionThe load_multiboot function in hw/i386/multiboot.c in Quick Emulator (aka QEMU) allows local guest OS users to execute arbitrary code on the QEMU host via a mh_load_end_addr value greater than mh_bss_end_addr, which triggers an out-of-bounds read or write memory access.
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)
ReferencesDLA-1350-1, DLA-1351-1, DLA-1497-1, DSA-4213-1
NVD severitymedium (attack range: local)
Debian Bugs892041

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
qemu (PTS)jessie1:2.1+dfsg-12+deb8u6vulnerable
jessie (security)1:2.1+dfsg-12+deb8u7fixed
stretch (security), stretch1:2.8+dfsg-6+deb9u4fixed
buster, sid1:2.12+dfsg-3fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
qemusource(unstable)1:2.12~rc3+dfsg-1medium892041
qemusourcejessie1:2.1+dfsg-12+deb8u7mediumDLA-1497-1
qemusourcestretch1:2.8+dfsg-6+deb9u4mediumDSA-4213-1
qemusourcewheezy1.1.2+dfsg-6+deb7u25mediumDLA-1351-1
qemu-kvmsource(unstable)(unfixed)medium
qemu-kvmsourcewheezy1.1.2+dfsg-6+deb7u25mediumDLA-1350-1

Notes

https://git.qemu.org/?p=qemu.git;a=patch;h=2a8fcd119eb7c6bb3837fc3669eb1b2dfb31daf8

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