CVE-2020-10711

CVSS V2 Medium 4.3 CVSS V3 Medium 5.9
Description
A NULL pointer dereference flaw was found in the Linux kernel's SELinux subsystem in versions before 5.7. This flaw occurs while importing the Commercial IP Security Option (CIPSO) protocol's category bitmap into the SELinux extensible bitmap via the' ebitmap_netlbl_import' routine. While processing the CIPSO restricted bitmap tag in the 'cipso_v4_parsetag_rbm' routine, it sets the security attribute to indicate that the category bitmap is present, even if it has not been allocated. This issue leads to a NULL pointer dereference issue while importing the same category bitmap into SELinux. This flaw allows a remote network user to crash the system kernel, resulting in a denial of service.
Overview
  • CVE ID
  • CVE-2020-10711
  • Assigner
  • secalert@redhat.com
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2020-05-22T15:15:11
  • Last Modified Date
  • 2022-04-22T18:53:52
Weakness Enumerations
CWE URL
CWE-476 http://cwe.mitre.org/data/definitions/476.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 1 OR 5.7
cpe:2.3:a:redhat:3scale:2.0:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:redhat:openstack:13:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:redhat:virtualization_host:4.0:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:redhat:enterprise_linux_aus:7.4:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:redhat:enterprise_linux_server_tus:7.4:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:redhat:messaging_realtime_grid:2.0:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:opensuse:leap:15.2:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:* 1 OR
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:* 1 OR
cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* 1 OR
cpe:2.3:o:canonical:ubuntu_linux:19.10:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:* 1 OR
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:N/AC:M/Au:N/C:N/I:N/A:P
  • Access Vector
  • NETWORK
  • Access Compatibility
  • MEDIUM
  • Authentication
  • NONE
  • Confidentiality Impact
  • NONE
  • Integrity Impact
  • NONE
  • Availability Impact
  • PARTIAL
  • Base Score
  • 4.3
  • Severity
  • MEDIUM
  • Exploitability Score
  • 8.6
  • Impact Score
  • 2.9
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
  • Attack Vector
  • NETWORK
  • Attack Compatibility
  • HIGH
  • Privileges Required
  • NONE
  • User Interaction
  • NONE
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • NONE
  • Availability Impact
  • HIGH
  • Base Score
  • 5.9
  • Base Severity
  • MEDIUM
  • Exploitability Score
  • 2.2
  • Impact Score
  • 3.6
References
Reference URL Reference Tags
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-10711 Issue Tracking Patch Third Party Advisory
https://www.openwall.com/lists/oss-security/2020/05/12/2 Mailing List Patch Third Party Advisory
https://security.netapp.com/advisory/ntap-20200608-0001/ Third Party Advisory
https://lists.debian.org/debian-lts-announce/2020/06/msg00012.html Third Party Advisory
https://www.debian.org/security/2020/dsa-4699 Third Party Advisory
https://www.debian.org/security/2020/dsa-4698 Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00022.html Mailing List Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00008.html Mailing List Third Party Advisory
https://usn.ubuntu.com/4413-1/ Third Party Advisory
https://usn.ubuntu.com/4411-1/ Third Party Advisory
https://usn.ubuntu.com/4412-1/ Third Party Advisory
https://usn.ubuntu.com/4419-1/ Third Party Advisory
https://usn.ubuntu.com/4414-1/ Third Party Advisory
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2020-10711
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-10711
History
Created Old Value New Value Data Type Notes
2022-05-10 06:27:24 Added to TrackCVE
2022-12-04 16:55:33 2020-05-22T15:15Z 2020-05-22T15:15:11 CVE Published Date updated
2022-12-04 16:55:33 2022-04-22T18:53:52 CVE Modified Date updated
2022-12-04 16:55:33 Analyzed Vulnerability Status updated