CVE-2017-11671

medium
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

Under certain circumstances, the ix86_expand_builtin function in i386.c in GNU Compiler Collection (GCC) version 4.6, 4.7, 4.8, 4.9, 5 before 5.5, and 6 before 6.4 will generate instruction sequences that clobber the status flag of the RDRAND and RDSEED intrinsics before it can be read, potentially causing failures of these instructions to go unreported. This could potentially lead to less randomness in random number generation.

References

http://openwall.com/lists/oss-security/2017/07/27/2

http://www.securityfocus.com/bid/100018

https://access.redhat.com/errata/RHSA-2018:0849

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80180

https://gcc.gnu.org/ml/gcc-patches/2017-03/msg01349.html

Details

Source: MITRE

Published: 2017-07-26

Updated: 2018-04-12

Type: CWE-338

Risk Information

CVSS v2

Base Score: 2.1

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

Impact Score: 2.9

Exploitability Score: 3.9

Severity: LOW

CVSS v3

Base Score: 4

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

Impact Score: 1.4

Exploitability Score: 2.5

Severity: MEDIUM

Tenable Plugins

View all (13 total)

IDNameProductFamilySeverity
127181NewStart CGSL CORE 5.04 / MAIN 5.04 : gcc Vulnerability (NS-SA-2019-0023)NessusNewStart CGSL Local Security Checks
medium
121849Photon OS 1.0: Gcc PHSA-2018-1.0-0150NessusPhotonOS Local Security Checks
medium
118419EulerOS Virtualization 2.5.0 : gcc (EulerOS-SA-2018-1331)NessusHuawei Local Security Checks
medium
111276Photon OS 1.0 : gcc / nghttp2 (PhotonOS-PHSA-2018-1.0-0150 (deprecated)NessusPhotonOS Local Security Checks
high
110826EulerOS 2.0 SP3 : gcc (EulerOS-SA-2018-1174)NessusHuawei Local Security Checks
medium
109514EulerOS 2.0 SP2 : gcc (EulerOS-SA-2018-1116)NessusHuawei Local Security Checks
medium
109446Scientific Linux Security Update : gcc on SL7.x x86_64 (20180410)NessusScientific Linux Local Security Checks
medium
109374CentOS 7 : gcc (CESA-2018:0849)NessusCentOS Local Security Checks
medium
109108Oracle Linux 7 : gcc (ELSA-2018-0849)NessusOracle Linux Local Security Checks
medium
108988RHEL 7 : gcc (RHSA-2018:0849)NessusRed Hat Local Security Checks
medium
104245openSUSE Security Update : gcc48 (openSUSE-2017-1223)NessusSuSE Local Security Checks
medium
103355SUSE SLED12 / SLES12 Security Update : gcc48 (SUSE-SU-2017:2526-1)NessusSuSE Local Security Checks
medium
102099Fedora 25 : gcc / gcc-python-plugin / libtool (2017-32a4a94c72)NessusFedora Local Security Checks
medium