Vulnerability Details 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 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 scoring system (EPSS) score
EPSS Score 0.012
EPSS Ranking 77.9%
CVSS Severity
CVSS v3 Score 9.8
CVSS v2 Score 7.5
References
- https://github.com/fingolfin/memmove-bug
- https://security.netapp.com/advisory/ntap-20190329-0001/
- https://security.netapp.com/advisory/ntap-20190401-0001/
- https://sourceware.org/bugzilla/show_bug.cgi?id=22644
- https://sourceware.org/git/gitweb.cgi?p=glibc.git%3Bh=cd66c0e584c6d692bc8347b5e72723d02b8a8ada
- https://usn.ubuntu.com/4416-1/
- https://github.com/fingolfin/memmove-bug
- https://security.netapp.com/advisory/ntap-20190329-0001/
- https://security.netapp.com/advisory/ntap-20190401-0001/
- https://sourceware.org/bugzilla/show_bug.cgi?id=22644
- https://sourceware.org/git/gitweb.cgi?p=glibc.git%3Bh=cd66c0e584c6d692bc8347b5e72723d02b8a8ada
- https://usn.ubuntu.com/4416-1/
Products affected by CVE-2017-18269
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cpe:2.3:a:gnu:glibc:2.21
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cpe:2.3:a:gnu:glibc:2.21.90
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cpe:2.3:a:gnu:glibc:2.22
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cpe:2.3:a:gnu:glibc:2.22.90
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cpe:2.3:a:gnu:glibc:2.23
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cpe:2.3:a:gnu:glibc:2.23.90
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cpe:2.3:a:gnu:glibc:2.24
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cpe:2.3:a:gnu:glibc:2.24.90
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cpe:2.3:a:gnu:glibc:2.25
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cpe:2.3:a:gnu:glibc:2.25.90
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cpe:2.3:a:gnu:glibc:2.26
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cpe:2.3:a:gnu:glibc:2.26.9000
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cpe:2.3:a:gnu:glibc:2.27
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cpe:2.3:o:linux:linux_kernel:-