CVE-2017-18269 — CRITICAL (9.8)

Q: How severe is CVE-2017-18269?

CVE-2017-18269 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.

Q: Is there a patch for CVE-2017-18269?

Check the references section above for vendor advisories and patch information. Affected products include: Gnu Glibc, Linux Linux Kernel.

Vulnerability 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.

CVSS Score

9.8

CRITICAL

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Gnu	Glibc	>= 2.21, <= 2.27
Linux	Linux Kernel	-

Related Weaknesses (CWE)

CWE-119

References

FAQ

What is CVE-2017-18269?

CVE-2017-18269 is a vulnerability with a CVSS score of 9.8 (CRITICAL). 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 over...

How severe is CVE-2017-18269?

CVE-2017-18269 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.

Is there a patch for CVE-2017-18269?

Check the references section above for vendor advisories and patch information. Affected products include: Gnu Glibc, Linux Linux Kernel.