CVE-2017-18269

glibc: memory corruption in memcpy-sse2-unaligned.S

Published May 18, 2018 CVSS 3.0 · 9.8 Critical EPSS 4.5% KEV · Not listed
Description
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2017-9396 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.
Ubuntu USN Ubuntu USN USN-4416-1 GNU C Library vulnerabilities
History

No history.

Weaknesses

Sources

Status
PUBLISHED
Assigner
mitre
Published
Updated
Aug 5, 2024, 9:13 PM
Reserved
May 18, 2018, 12:00 AM
Status
Modified
Published
May 18, 2018, 4:29 PM
Modified
Jun 17, 2026, 1:12 AM
Severity
Moderate
Public date
Dec 24, 2017, 12:00 AM