CVE-2018-6485

glibc: Integer overflow in posix_memalign in memalign functions

Severity Score

9.8

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

An integer overflow in the implementation of the posix_memalign in memalign functions in the GNU C Library (aka glibc or libc6) 2.26 and earlier could cause these functions to return a pointer to a heap area that is too small, potentially leading to heap corruption.

Un desbordamiento de enteros en la implementación de posix_memalign en las funciones memalign en GNU C Library (también conocido como glibc o libc6) en versiones 2.26 y anteriores podría provocar que estas funciones devuelvan un puntero a un área de la memoria dinámica (heap) demasiado pequeña, pudiendo corromper el heap.

Florian Weimer discovered that the GNU C Library incorrectly handled certain memory operations. A remote attacker could use this issue to cause the GNU C Library to crash, resulting in a denial of service, or possibly execute arbitrary code. This issue only affected Ubuntu 16.04 LTS. It was discovered that the GNU C Library incorrectly handled certain SSE2-optimized memmove operations. A remote attacker could use this issue to cause the GNU C Library to crash, resulting in a denial of service, or possibly execute arbitrary code. This issue only affected Ubuntu 16.04 LTS. Various other issues were also addressed.

*Credits: N/A

CVSS Scores

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

Low

Availability

Low

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2017-04-03 CVE Published
2018-02-01 CVE Reserved
2024-08-05 CVE Updated
2025-03-30 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-190: Integer Overflow or Wraparound
CWE-787: Out-of-bounds Write

CAPEC

References (11)

URL	Tag	Source
http://bugs.debian.org/878159	Issue Tracking
http://www.securityfocus.com/bid/102912	Third Party Advisory
https://security.netapp.com/advisory/ntap-20190404-0003	Third Party Advisory
https://sourceware.org/bugzilla/show_bug.cgi?id=22343	Issue Tracking

URL	Date	SRC

URL	Date	SRC
https://access.redhat.com/errata/RHSA-2018:3092	2020-08-24
https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html	2020-08-24

URL	Date	SRC
https://access.redhat.com/errata/RHBA-2019:0327	2020-08-24
https://usn.ubuntu.com/4218-1	2020-08-24
https://usn.ubuntu.com/4416-1	2020-08-24
https://access.redhat.com/security/cve/CVE-2018-6485	2018-10-30
https://bugzilla.redhat.com/show_bug.cgi?id=1542102	2018-10-30

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Gnu Search vendor "Gnu"		Glibc Search vendor "Gnu" for product "Glibc"				<= 2.26 Search vendor "Gnu" for product "Glibc" and version " <= 2.26"		-		Affected
Redhat Search vendor "Redhat"		Virtualization Host Search vendor "Redhat" for product "Virtualization Host"				4.0 Search vendor "Redhat" for product "Virtualization Host" and version "4.0"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Desktop Search vendor "Redhat" for product "Enterprise Linux Desktop"				7.0 Search vendor "Redhat" for product "Enterprise Linux Desktop" and version "7.0"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Server Search vendor "Redhat" for product "Enterprise Linux Server"				7.0 Search vendor "Redhat" for product "Enterprise Linux Server" and version "7.0"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Workstation Search vendor "Redhat" for product "Enterprise Linux Workstation"				7.0 Search vendor "Redhat" for product "Enterprise Linux Workstation" and version "7.0"		-		Affected
Oracle Search vendor "Oracle"		Communications Session Border Controller Search vendor "Oracle" for product "Communications Session Border Controller"				8.0.0 Search vendor "Oracle" for product "Communications Session Border Controller" and version "8.0.0"		-		Affected
Oracle Search vendor "Oracle"		Communications Session Border Controller Search vendor "Oracle" for product "Communications Session Border Controller"				8.1.0 Search vendor "Oracle" for product "Communications Session Border Controller" and version "8.1.0"		-		Affected
Oracle Search vendor "Oracle"		Communications Session Border Controller Search vendor "Oracle" for product "Communications Session Border Controller"				8.2.0 Search vendor "Oracle" for product "Communications Session Border Controller" and version "8.2.0"		-		Affected
Oracle Search vendor "Oracle"		Enterprise Communications Broker Search vendor "Oracle" for product "Enterprise Communications Broker"				3.0.0 Search vendor "Oracle" for product "Enterprise Communications Broker" and version "3.0.0"		-		Affected
Oracle Search vendor "Oracle"		Enterprise Communications Broker Search vendor "Oracle" for product "Enterprise Communications Broker"				3.1.0 Search vendor "Oracle" for product "Enterprise Communications Broker" and version "3.1.0"		-		Affected
Netapp Search vendor "Netapp"		Cloud Backup Search vendor "Netapp" for product "Cloud Backup"				-		-		Affected
Netapp Search vendor "Netapp"		Data Ontap Edge Search vendor "Netapp" for product "Data Ontap Edge"				-		-		Affected
Netapp Search vendor "Netapp"		Element Software Search vendor "Netapp" for product "Element Software"				-		-		Affected
Netapp Search vendor "Netapp"		Element Software Management Search vendor "Netapp" for product "Element Software Management"				-		-		Affected
Netapp Search vendor "Netapp"		Steelstore Cloud Integrated Storage Search vendor "Netapp" for product "Steelstore Cloud Integrated Storage"				-		-		Affected
Netapp Search vendor "Netapp"		Storage Replication Adapter Search vendor "Netapp" for product "Storage Replication Adapter"				>= 7.2 Search vendor "Netapp" for product "Storage Replication Adapter" and version " >= 7.2"		-		Affected
Netapp Search vendor "Netapp"		Vasa Provider Search vendor "Netapp" for product "Vasa Provider"				>= 7.2 Search vendor "Netapp" for product "Vasa Provider" and version " >= 7.2"		clustered_data_ontap		Affected
Netapp Search vendor "Netapp"		Vasa Provider Search vendor "Netapp" for product "Vasa Provider"				6.x Search vendor "Netapp" for product "Vasa Provider" and version "6.x"		clustered_data_ontap		Affected
Netapp Search vendor "Netapp"		Virtual Storage Console Search vendor "Netapp" for product "Virtual Storage Console"				>= 7.2 Search vendor "Netapp" for product "Virtual Storage Console" and version " >= 7.2"		vmware_vsphere		Affected
Netapp Search vendor "Netapp"		Virtual Storage Console Search vendor "Netapp" for product "Virtual Storage Console"				-		-		Affected