ID CVE-2016-9104
Summary Multiple integer overflows in the (1) v9fs_xattr_read and (2) v9fs_xattr_write functions in hw/9pfs/9p.c in QEMU (aka Quick Emulator) allow local guest OS administrators to cause a denial of service (QEMU process crash) via a crafted offset, which triggers an out-of-bounds access.
References
Vulnerable Configurations
  • cpe:2.3:a:qemu:qemu:-:*:*:*:*:*:*:*
    cpe:2.3:a:qemu:qemu:-:*:*:*:*:*:*:*
CVSS
Base: 2.1 (as of 01-12-2018 - 11:29)
Impact:
Exploitability:
CWE CWE-190
CAPEC
  • Forced Integer Overflow
    This attack forces an integer variable to go out of range. The integer variable is often used as an offset such as size of memory allocation or similarly. The attacker would typically control the value of such variable and try to get it out of range. For instance the integer in question is incremented past the maximum possible value, it may wrap to become a very small, or negative number, therefore providing a very incorrect value which can lead to unexpected behavior. At worst the attacker can execute arbitrary code.
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 93956
gentoo GLSA-201611-11
mlist
  • [debian-lts-announce] 20181130 [SECURITY] [DLA 1599-1] qemu security update
  • [oss-security] 20161028 CVE request Qemu: 9pfs: integer overflow leading to OOB access
  • [oss-security] 20161030 Re: CVE request Qemu: 9pfs: integer overflow leading to OOB access
  • [qemu-devel] 20161013 Re: [PATCH v3 3/3] 9pfs: fix integer overflow issue in xattr read/write
suse openSUSE-SU-2016:3237
Last major update 01-12-2018 - 11:29
Published 09-12-2016 - 22:59
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