CVE-2018-6551

HIGH

Description

The malloc implementation in the GNU C Library (aka glibc or libc6), from version 2.24 to 2.26 on powerpc, and only in version 2.26 on i386, did not properly handle malloc calls with arguments close to SIZE_MAX and could return a pointer to a heap region that is smaller than requested, eventually leading to heap corruption.

References

https://security.netapp.com/advisory/ntap-20190404-0003/

https://sourceware.org/bugzilla/show_bug.cgi?id=22774

https://sourceware.org/git/?p=glibc.git;a=commit;h=8e448310d74b283c5cd02b9ed7fb997b47bf9b22

Details

Source: MITRE

Published: 2018-02-02

Updated: 2020-08-24

Type: CWE-787

Risk Information

CVSS v2.0

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 v3.0

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

Vulnerable Software

Configuration 1

OR

cpe:2.3:a:gnu:glibc:*:*:*:*:*:*:*:* versions from 2.24 to 2.26 (inclusive)

Tenable Plugins

View all (10 total)

IDNameProductFamilySeverity
121924Photon OS 2.0: Glibc PHSA-2018-2.0-0020NessusPhotonOS Local Security Checks
high
121812Photon OS 1.0: Glibc PHSA-2018-1.0-0111NessusPhotonOS Local Security Checks
high
111921Photon OS 1.0: Glibc PHSA-2018-1.0-0111 (deprecated)NessusPhotonOS Local Security Checks
high
111289Photon OS 2.0 : glibc (PhotonOS-PHSA-2018-2.0-0020) (deprecated)NessusPhotonOS Local Security Checks
high
109141Amazon Linux 2 : glibc (ALAS-2018-992)NessusAmazon Linux Local Security Checks
high
108822GLSA-201804-02 : glibc: Multiple vulnerabilitiesNessusGentoo Local Security Checks
high
107158Fedora 27 : glibc (2018-1cbdc8cbb8)NessusFedora Local Security Checks
high
107086SUSE SLES11 Security Update : glibc (SUSE-SU-2018:0565-1)NessusSuSE Local Security Checks
high
106916openSUSE Security Update : glibc (openSUSE-2018-184)NessusSuSE Local Security Checks
high
106865SUSE SLED12 / SLES12 Security Update : glibc (SUSE-SU-2018:0451-1)NessusSuSE Local Security Checks
high