vulnwire
9.8crit

CVE-2017-18269

An SSE2-optimized memmove implementation for i386 in sysdeps/i386/i686/multiarch/memcpy-sse2-unaligned.S in the GNU C Library (aka glibc or…

Published 8 y ago · modified 4 mo ago · JSON

CVSS
9.8
v3.0 · NVD
CISA KEV
No
not known exploited
EPSS
4.5%
percentile 92%
Public exploits
0
none known

An SSE2-optimized memmove implementation for i386 in sysdeps/i386/i686/multiarch/memcpy-sse2-unaligned.S in the GNU C Library (aka glibc or libc6) 2.21 through 2.27 does not correctly perform the overlapping memory check if the source memory range spans the middle of the address space, resulting in corrupt data being produced by the copy operation. This may disclose information to context-dependent attackers, or result in a denial of service, or, possibly, code execution.

Exploit prediction (EPSS)

4.54% probability of exploitation in the next 30 days, higher than 92% of all scored CVEs.

CVSS scores

Assigned byVersionScoreVector
NVD3.09.8CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD2.07.5AV:N/AC:L/Au:N/C:P/I:P/A:P

Classification

Weakness
  • CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer

References

  • sourceware.org /git/gitweb.cgi?p=glibc.git%3Bh=cd66c0e584c6d692bc8347b5e72723d02b8a8ada · x_refsource_MISC, x_transferred
  • github.com /fingolfin/memmove-bug · x_refsource_MISC, x_transferred
  • sourceware.org /bugzilla/show_bug.cgi?id=22644 · x_refsource_MISC, x_transferred
  • security.netapp.com /advisory/ntap-20190329-0001/ · x_refsource_CONFIRM, x_transferred
  • security.netapp.com /advisory/ntap-20190401-0001/ · x_refsource_CONFIRM, x_transferred
  • usn.ubuntu.com /4416-1/ · vendor-advisory, x_refsource_UBUNTU, x_transferred

Sources

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