CVE-2019-5489
Vulnerability Summary
Timeline
Description
The mincore() implementation in mm/mincore.c in the Linux kernel through 4.19.13 allowed local attackers to observe page cache access patterns of other processes on the same system, potentially allowing sniffing of secret information. (Fixing this affects the output of the fincore program.) Limited remote exploitation may be possible, as demonstrated by latency differences in accessing public files from an Apache HTTP Server.
CVSS Metrics
- v4.0•MEDIUM•Score: 4.8CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
- v3.0•MEDIUM•Score: 5.5CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
- v2.0•LOW•Score: 2.1AV:L/AC:L/Au:N/C:P/I:N/A:N
EPSS Trends
Current EPSS score: 0.77%• Percentile: 54%
Techniques & Countermeasures
- CWE-319•Cleartext Transmission of Sensitive Information
The product transmits sensitive or security-critical data in cleartext in a communication channel that can be sniffed by unauthorized actors.
Affected Systems
- debian•linux
< 4.19.37-4 | < 4.19.37-4 | < 4.19.37-4 | < 4.19.37-4
- ubuntu•linux
all | < 4.4.0-157.185 | < 4.15.0-60.67
- ubuntu•linux-aws
< 4.4.0-1054.58 | < 4.4.0-1090.101 | < 4.15.0-1047.49
- ubuntu•linux-aws-fips
< 4.15.0-2018.18 | all
- ubuntu•linux-aws-hwe
< 4.15.0-1047.49~16.04.1
- ubuntu•linux-azure
< 4.15.0-1059.64~14.04.1 | < 4.15.0-1056.61 | < 5.0.0-1014.14~18.04.1
- ubuntu•linux-azure-fde
all
- ubuntu•linux-azure-fde-5.15
< 5.15.0-1114.123~20.04.1
- ubuntu•linux-azure-fips
< 4.15.0-2006.7 | all
- ubuntu•linux-bluefield
all
- ubuntu•linux-fips
< 4.4.0-1015.20
- ubuntu•linux-gcp
< 4.15.0-1041.43 | < 4.15.0-1042.45
- ubuntu•linux-gcp-fips
all
- ubuntu•linux-gke
all
- ubuntu•linux-gke-4.15
< 4.15.0-1041.43
- ubuntu•linux-gke-5.0
< 5.0.0-1013.13~18.04.1
- ubuntu•linux-hwe
< 4.15.0-60.67~16.04.1 | < 5.0.0-25.26~18.04.1
- ubuntu•linux-hwe-edge
all
- ubuntu•linux-intel-iot-realtime
all
- ubuntu•linux-kvm
< 4.4.0-1052.59 | < 4.15.0-1043.43
- ubuntu•linux-lts-xenial
< 4.4.0-164.192~14.04.1
- ubuntu•linux-oem
< 4.15.0-1056.65
- ubuntu•linux-oem-osp1
< 5.0.0-1018.20
- ubuntu•linux-oracle
< 4.15.0-1022.25~16.04.1 | < 4.15.0-1022.25
- ubuntu•linux-raspi-realtime
all
- ubuntu•linux-raspi2
< 4.4.0-1117.126 | < 4.15.0-1044.47
- ubuntu•linux-realtime
all
- ubuntu•linux-riscv
all | all
- ubuntu•linux-snapdragon
< 4.4.0-1121.127 | < 4.15.0-1062.69
- linux•linux_kernel
≤ 4.19.13
- netapp•active_iq_performance_analytics_services
na
- netapp•element_software_management_node
na
References (40)
- http://www.securityfocus.com/bid/106478
- http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00071.html
- https://www.debian.org/security/2019/dsa-4465
- https://lists.debian.org/debian-lts-announce/2019/06/msg00010.html
- https://lists.debian.org/debian-lts-announce/2019/06/msg00011.html
- http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00039.html
- https://seclists.org/bugtraq/2019/Jun/26
- http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00048.html
- https://access.redhat.com/errata/RHSA-2019:2043
- https://access.redhat.com/errata/RHSA-2019:2029
- https://access.redhat.com/errata/RHSA-2019:2473
- https://access.redhat.com/errata/RHSA-2019:2808
- https://access.redhat.com/errata/RHSA-2019:2837
- https://access.redhat.com/errata/RHSA-2019:2809
- https://access.redhat.com/errata/RHSA-2019:3309
- https://access.redhat.com/errata/RHSA-2019:3517
- https://access.redhat.com/errata/RHSA-2019:3967
- https://access.redhat.com/errata/RHSA-2019:4058
- https://access.redhat.com/errata/RHSA-2019:4057
- https://access.redhat.com/errata/RHSA-2019:4056
- https://access.redhat.com/errata/RHSA-2019:4159
- https://access.redhat.com/errata/RHSA-2019:4164
- https://access.redhat.com/errata/RHSA-2019:4255
- https://access.redhat.com/errata/RHSA-2020:0204
- https://www.oracle.com/security-alerts/cpujul2020.html
- https://www.theregister.co.uk/2019/01/05/boffins_beat_page_cache/
- https://bugzilla.suse.com/show_bug.cgi?id=1120843
- https://github.com/torvalds/linux/commit/574823bfab82d9d8fa47f422778043fbb4b4f50e
- https://arxiv.org/abs/1901.01161
- https://security.netapp.com/advisory/ntap-20190307-0001/
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=574823bfab82d9d8fa47f422778043fbb4b4f50e
- http://www.huawei.com/en/psirt/security-advisories/huawei-sa-20200115-01-pagecache-en
- https://ubuntu.com/security/CVE-2019-5489
- https://www.openwall.com/lists/oss-security/2019/01/07/2
- https://arxiv.org/pdf/1901.01161.pdf
- https://lore.kernel.org/lkml/CAHk-=wiqbKEC5jUXr3ax+oUuiRrp=QMv_ZnUfO-SPv=UNJ-OTw@mail.gmail.com/
- https://lore.kernel.org/lkml/CAHk-=wg+C65FJHB=Jx1OvuJP4kvpWdw+5G=XOXB6X_KB2XuofA@mail.gmail.com/#t
- https://lore.kernel.org/lkml/nycvar.YFH.7.76.1901272335040.6626@cbobk.fhfr.pm/
- https://www.cve.org/CVERecord?id=CVE-2019-5489
- https://security-tracker.debian.org/tracker/CVE-2019-5489