CVE-2017-18269

CRITICAL
New! CVE Severity Now Using CVSS v3

The calculated severity for CVEs has been updated to use CVSS v3 by default. CVEs that do not have a CVSS v3 score will fall back CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.

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.

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;h=cd66c0e584c6d692bc8347b5e72723d02b8a8ada

https://usn.ubuntu.com/4416-1/

Details

Source: MITRE

Published: 2018-05-18

Updated: 2020-07-09

Type: CWE-119

Risk Information

CVSS v2

Base Score: 7.5

Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P

Impact Score: 6.4

Exploitability Score: 10

Severity: HIGH

CVSS v3

Base Score: 9.8

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

Impact Score: 5.9

Exploitability Score: 3.9

Severity: CRITICAL

Tenable Plugins

View all (13 total)

IDNameProductFamilySeverity
147282NewStart CGSL MAIN 6.02 : glibc Multiple Vulnerabilities (NS-SA-2021-0053)NessusNewStart CGSL Local Security Checks
high
138166Ubuntu 16.04 LTS / 18.04 LTS / 19.10 : GNU C Library vulnerabilities (USN-4416-1)NessusUbuntu Local Security Checks
critical
123228openSUSE Security Update : glibc (openSUSE-2019-539)NessusSuSE Local Security Checks
critical
121961Photon OS 2.0: Glibc PHSA-2018-2.0-0064NessusPhotonOS Local Security Checks
critical
121853Photon OS 1.0: Glibc PHSA-2018-1.0-0155NessusPhotonOS Local Security Checks
critical
120053SUSE SLED15 / SLES15 Security Update : glibc (SUSE-SU-2018:1991-1)NessusSuSE Local Security Checks
critical
118259SUSE SLES12 Security Update : glibc (SUSE-SU-2018:1562-2)NessusSuSE Local Security Checks
critical
111951Photon OS 2.0: Binutils / Glibc PHSA-2018-2.0-0064 (deprecated)NessusPhotonOS Local Security Checks
critical
111939Photon OS 1.0: Glibc PHSA-2018-1.0-0155 (deprecated)NessusPhotonOS Local Security Checks
critical
111501openSUSE Security Update : glibc (openSUSE-2018-788)NessusSuSE Local Security Checks
critical
111335Amazon Linux 2 : glibc (ALAS-2018-1048)NessusAmazon Linux Local Security Checks
critical
110407openSUSE Security Update : glibc (openSUSE-2018-567)NessusSuSE Local Security Checks
critical
110393SUSE SLED12 / SLES12 Security Update : glibc (SUSE-SU-2018:1562-1)NessusSuSE Local Security Checks
critical