Vulnerability Details : CVE-2019-9213
Public exploit exists!
In the Linux kernel before 4.20.14, expand_downwards in mm/mmap.c lacks a check for the mmap minimum address, which makes it easier for attackers to exploit kernel NULL pointer dereferences on non-SMAP platforms. This is related to a capability check for the wrong task.
Threat overview for CVE-2019-9213
Top countries where our scanners detected CVE-2019-9213
Top open port discovered on systems with this issue
53
IPs affected by CVE-2019-9213 131,262
Threat actors abusing to this issue?
Yes
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affected by CVE-2019-9213!
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Exploit prediction scoring system (EPSS) score for CVE-2019-9213
Probability of exploitation activity in the next 30 days: 0.08%
Percentile, the proportion of vulnerabilities that are scored at or less: ~ 33 % EPSS Score History EPSS FAQ
Metasploit modules for CVE-2019-9213
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Reliable Datagram Sockets (RDS) rds_atomic_free_op NULL pointer dereference Privilege Escalation
Disclosure Date: 2018-11-01First seen: 2020-04-26exploit/linux/local/rds_atomic_free_op_null_pointer_deref_priv_escThis module attempts to gain root privileges on Linux systems by abusing a NULL pointer dereference in the `rds_atomic_free_op` function in the Reliable Datagram Sockets (RDS) kernel module (rds.ko). Successful exploitation requires the RDS kernel module to be loade
CVSS scores for CVE-2019-9213
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source |
---|---|---|---|---|---|
4.9
|
MEDIUM | AV:L/AC:L/Au:N/C:N/I:N/A:C |
3.9
|
6.9
|
NIST |
5.5
|
MEDIUM | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
1.8
|
3.6
|
NIST |
CWE ids for CVE-2019-9213
-
A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit.Assigned by: nvd@nist.gov (Primary)
References for CVE-2019-9213
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https://access.redhat.com/errata/RHSA-2019:1480
RHSA-2019:1480 - Security Advisory - Red Hat Customer PortalThird Party Advisory
-
https://usn.ubuntu.com/3933-1/
USN-3933-1: Linux kernel vulnerabilities | Ubuntu security noticesThird Party Advisory
-
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=0a1d52994d440e21def1c2174932410b4f2a98a1
kernel/git/torvalds/linux.git - Linux kernel source treePatch;Vendor Advisory
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https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.27
Mailing List;Patch;Vendor Advisory
-
http://packetstormsecurity.com/files/156053/Reliable-Datagram-Sockets-RDS-rds_atomic_free_op-Privilege-Escalation.html
Reliable Datagram Sockets (RDS) rds_atomic_free_op Privilege Escalation ≈ Packet StormExploit;Third Party Advisory;VDB Entry
-
https://lists.debian.org/debian-lts-announce/2019/04/msg00004.html
[SECURITY] [DLA 1731-2] linux regression updateMailing List;Third Party Advisory
-
https://usn.ubuntu.com/3930-1/
USN-3930-1: Linux kernel vulnerabilities | Ubuntu security noticesThird Party Advisory
-
https://usn.ubuntu.com/3932-1/
USN-3932-1: Linux kernel vulnerabilities | Ubuntu security noticesThird Party Advisory
-
https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.105
Mailing List;Patch;Vendor Advisory
-
https://usn.ubuntu.com/3931-1/
USN-3931-1: Linux kernel vulnerabilities | Ubuntu security noticesThird Party Advisory
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https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.20.14
Mailing List;Patch;Vendor Advisory
-
https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.162
Mailing List;Patch;Vendor Advisory
-
https://lists.debian.org/debian-lts-announce/2019/03/msg00034.html
[SECURITY] [DLA 1731-1] linux security updateMailing List;Third Party Advisory
-
http://lists.opensuse.org/opensuse-security-announce/2019-03/msg00045.html
[security-announce] openSUSE-SU-2019:1085-1: important: Security updateMailing List;Third Party Advisory
-
https://lists.debian.org/debian-lts-announce/2019/05/msg00002.html
[SECURITY] [DLA 1771-1] linux-4.9 security updateMailing List;Third Party Advisory
-
https://access.redhat.com/errata/RHSA-2019:1479
RHSA-2019:1479 - Security Advisory - Red Hat Customer PortalThird Party Advisory
-
https://usn.ubuntu.com/3931-2/
USN-3931-2: Linux kernel (HWE) vulnerabilities | Ubuntu security noticesThird Party Advisory
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https://bugs.chromium.org/p/project-zero/issues/detail?id=1792
1792 - Linux: virtual address 0 is mappable via privileged write() to /proc/*/mem - project-zero - MonorailExploit;Mailing List;Third Party Advisory
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http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00052.html
[security-announce] openSUSE-SU-2019:1193-1: important: Security updateMailing List;Third Party Advisory
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https://www.exploit-db.com/exploits/46502/
Linux < 4.20.14 - Virtual Address 0 is Mappable via Privileged write() to /proc/*/memExploit;Third Party Advisory;VDB Entry
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https://access.redhat.com/errata/RHSA-2019:0831
RHSA-2019:0831 - Security Advisory - Red Hat Customer PortalThird Party Advisory
-
https://usn.ubuntu.com/3932-2/
USN-3932-2: Linux kernel (Xenial HWE) vulnerabilities | Ubuntu security noticesThird Party Advisory
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https://github.com/torvalds/linux/commit/0a1d52994d440e21def1c2174932410b4f2a98a1
mm: enforce min addr even if capable() in expand_downwards() · torvalds/linux@0a1d529 · GitHubMailing List;Patch;Vendor Advisory
-
https://usn.ubuntu.com/3930-2/
USN-3930-2: Linux kernel (HWE) vulnerabilities | Ubuntu security noticesThird Party Advisory
-
https://usn.ubuntu.com/3933-2/
USN-3933-2: Linux kernel (Trusty HWE) vulnerabilities | Ubuntu security noticesThird Party Advisory
Products affected by CVE-2019-9213
- cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:*:*:*:*
- cpe:2.3:o:opensuse:leap:42.3:*:*:*:*:*:*:*
- cpe:2.3:o:opensuse:leap:15.0:*:*:*:*:*:*:*