CVE-2018-1000001high
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
In glibc 2.26 and earlier there is confusion in the usage of getcwd() by realpath() which can be used to write before the destination buffer leading to a buffer underflow and potential code execution.
References
http://seclists.org/oss-sec/2018/q1/38
http://www.securityfocus.com/bid/102525
http://www.securitytracker.com/id/1040162
https://access.redhat.com/errata/RHSA-2018:0805
https://security.netapp.com/advisory/ntap-20190404-0003/
https://usn.ubuntu.com/3534-1/
https://usn.ubuntu.com/3536-1/
https://www.exploit-db.com/exploits/43775/
https://www.exploit-db.com/exploits/44889/
https://www.halfdog.net/Security/2017/LibcRealpathBufferUnderflow/
Details
Source: MITRE
Published: 2018-01-31
Updated: 2019-10-03
Type: CWE-787
Risk Information
CVSS v2
Base Score: 7.2
Vector: AV:L/AC:L/Au:N/C:C/I:C/A:C
Impact Score: 10
Exploitability Score: 3.9
Severity: HIGH
CVSS v3
Base Score: 7.8
Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Impact Score: 5.9
Exploitability Score: 1.8
Severity: HIGH
Vulnerable Software
Configuration 1
OR
cpe:2.3:a:gnu:glibc:*:*:*:*:*:*:*:* versions up to 2.26 (inclusive)
Configuration 2
OR
cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:esm:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
Configuration 3
OR
cpe:2.3:a:redhat:virtualization_host:4.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_server_aus:7.6:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_server_eus:7.6:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_server_tus:7.6:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:*
Tenable Plugins
| ID | Name | Product | Family | Severity |
|---|---|---|---|---|
| 147282 | NewStart CGSL MAIN 6.02 : glibc Multiple Vulnerabilities (NS-SA-2021-0053) | Nessus | NewStart CGSL Local Security Checks | high |
| 127183 | NewStart CGSL CORE 5.04 / MAIN 5.04 : glibc Multiple Vulnerabilities (NS-SA-2019-0024) | Nessus | NewStart CGSL Local Security Checks | critical |
| 125004 | EulerOS Virtualization 3.0.1.0 : glibc (EulerOS-SA-2019-1551) | Nessus | Huawei Local Security Checks | high |
| 121923 | Photon OS 2.0: Glibc PHSA-2018-2.0-0018 | Nessus | PhotonOS Local Security Checks | high |
| 121812 | Photon OS 1.0: Glibc PHSA-2018-1.0-0111 | Nessus | PhotonOS Local Security Checks | critical |
| 117548 | EulerOS Virtualization 2.5.0 : glibc (EulerOS-SA-2018-1239) | Nessus | Huawei Local Security Checks | high |
| 111921 | Photon OS 1.0: Glibc PHSA-2018-1.0-0111 (deprecated) | Nessus | PhotonOS Local Security Checks | critical |
| 111547 | SUSE SLES12 Security Update : glibc (SUSE-SU-2018:2187-1) | Nessus | SuSE Local Security Checks | critical |
| 111288 | Photon OS 2.0 : glibc (PhotonOS-PHSA-2018-2.0-0018) (deprecated) | Nessus | PhotonOS Local Security Checks | high |
| 109699 | Amazon Linux AMI : glibc (ALAS-2018-1017) | Nessus | Amazon Linux Local Security Checks | critical |
| 109447 | Scientific Linux Security Update : glibc on SL7.x x86_64 (20180410) | Nessus | Scientific Linux Local Security Checks | critical |
| 109371 | CentOS 7 : glibc (CESA-2018:0805) | Nessus | CentOS Local Security Checks | critical |
| 109105 | Oracle Linux 7 : glibc (ELSA-2018-0805) | Nessus | Oracle Linux Local Security Checks | critical |
| 108985 | RHEL 7 : glibc (RHSA-2018:0805) | Nessus | Red Hat Local Security Checks | critical |
| 108822 | GLSA-201804-02 : glibc: Multiple vulnerabilities | Nessus | Gentoo Local Security Checks | critical |
| 107086 | SUSE SLES11 Security Update : glibc (SUSE-SU-2018:0565-1) | Nessus | SuSE Local Security Checks | critical |
| 106916 | openSUSE Security Update : glibc (openSUSE-2018-184) | Nessus | SuSE Local Security Checks | critical |
| 106865 | SUSE SLED12 / SLES12 Security Update : glibc (SUSE-SU-2018:0451-1) | Nessus | SuSE Local Security Checks | critical |
| 106776 | EulerOS 2.0 SP2 : glibc (EulerOS-SA-2018-1048) | Nessus | Huawei Local Security Checks | high |
| 106775 | EulerOS 2.0 SP1 : glibc (EulerOS-SA-2018-1047) | Nessus | Huawei Local Security Checks | high |
| 106281 | Fedora 26 : glibc (2018-8e27ad96ed) | Nessus | Fedora Local Security Checks | critical |
| 106279 | Fedora 27 : glibc (2018-7714b514e2) | Nessus | Fedora Local Security Checks | high |
| 106134 | Ubuntu 14.04 LTS / 16.04 LTS / 17.10 : eglibc, glibc vulnerabilities (USN-3534-1) | Nessus | Ubuntu Local Security Checks | critical |
| 106059 | openSUSE Security Update : glibc (openSUSE-2018-30) | Nessus | SuSE Local Security Checks | critical |
| 106046 | SUSE SLES12 Security Update : glibc (SUSE-SU-2018:0076-1) | Nessus | SuSE Local Security Checks | critical |
| 106045 | SUSE SLES11 Security Update : glibc (SUSE-SU-2018:0075-1) | Nessus | SuSE Local Security Checks | high |
| 106044 | SUSE SLED12 / SLES12 Security Update : glibc (SUSE-SU-2018:0074-1) | Nessus | SuSE Local Security Checks | critical |
| 106041 | SUSE SLES12 Security Update : glibc (SUSE-SU-2018:0071-1) | Nessus | SuSE Local Security Checks | high |