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.
Published 2018-05-18 16:29:00
Updated 2020-07-09 20:15:11
Source MITRE
View at NVD,   CVE.org
Vulnerability category: OverflowDenial of service

Products affected by CVE-2017-18269

Exploit prediction scoring system (EPSS) score for CVE-2017-18269

EPSS FAQ
0.75%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 81 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2017-18269

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
7.5
 HIGH AV:N/AC:L/Au:N/C:P/I:P/A:P
10.0
6.4
 NIST
9.8
 CRITICAL CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
3.9
5.9
 NIST

CWE ids for CVE-2017-18269

  • The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.
    Assigned by: nvd@nist.gov (Primary)

References for CVE-2017-18269

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