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Vulnerability Details : CVE-2021-27363

An issue was discovered in the Linux kernel through 5.11.3. A kernel pointer leak can be used to determine the address of the iscsi_transport structure. When an iSCSI transport is registered with the iSCSI subsystem, the transport's handle is available to unprivileged users via the sysfs file system, at /sys/class/iscsi_transport/$TRANSPORT_NAME/handle. When read, the show_transport_handle function (in drivers/scsi/scsi_transport_iscsi.c) is called, which leaks the handle. This handle is actually the pointer to an iscsi_transport struct in the kernel module's global variables.
Publish Date : 2021-03-07 Last Update Date : 2022-05-23
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- CVSS Scores & Vulnerability Types

CVSS Score
3.6
Confidentiality Impact Partial (There is considerable informational disclosure.)
Integrity Impact None (There is no impact to the integrity of the system)
Availability Impact Partial (There is reduced performance or interruptions in resource availability.)
Access Complexity Low (Specialized access conditions or extenuating circumstances do not exist. Very little knowledge or skill is required to exploit. )
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access None
Vulnerability Type(s)
CWE ID CWE id is not defined for this vulnerability

- Related OVAL Definitions

Title Definition Id Class Family
RHSA-2021:1070: kernel-rt security and bug fix update (Important) oval:com.redhat.rhsa:def:20211070 unix
RHSA-2021:1071: kernel security and bug fix update (Important) oval:com.redhat.rhsa:def:20211071 unix
RHSA-2021:1081: kernel-rt security and bug fix update (Important) oval:com.redhat.rhsa:def:20211081 unix
RHSA-2021:1093: kernel security, bug fix, and enhancement update (Important) oval:com.redhat.rhsa:def:20211093 unix
OVAL (Open Vulnerability and Assessment Language) definitions define exactly what should be done to verify a vulnerability or a missing patch. Check out the OVAL definitions if you want to learn what you should do to verify a vulnerability.

- Products Affected By CVE-2021-27363

# Product Type Vendor Product Version Update Edition Language
1 OS Debian Debian Linux 9.0 * * * Version Details Vulnerabilities
2 OS Linux Linux Kernel * * * * Version Details Vulnerabilities
3 Application Netapp Cloud Backup - * * * Version Details Vulnerabilities
4 OS Netapp Solidfire Baseboard Management Controller Firmware - * * * Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Debian Debian Linux 1
Linux Linux Kernel 1
Netapp Cloud Backup 1
Netapp Solidfire Baseboard Management Controller Firmware 1

- References For CVE-2021-27363

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=688e8128b7a92df982709a4137ea4588d16f24aa
https://security.netapp.com/advisory/ntap-20210409-0001/ CONFIRM
http://packetstormsecurity.com/files/162117/Kernel-Live-Patch-Security-Notice-LSN-0075-1.html
https://lists.debian.org/debian-lts-announce/2021/03/msg00035.html
MLIST [debian-lts-announce] 20210330 [SECURITY] [DLA 2610-1] linux-4.19 security update
https://blog.grimm-co.com/2021/03/new-old-bugs-in-linux-kernel.html
https://lists.debian.org/debian-lts-announce/2021/03/msg00010.html
MLIST [debian-lts-announce] 20210309 [SECURITY] [DLA 2586-1] linux security update
https://bugzilla.suse.com/show_bug.cgi?id=1182716
http://www.openwall.com/lists/oss-security/2021/03/06/1

- Metasploit Modules Related To CVE-2021-27363

There are not any metasploit modules related to this CVE entry (Please visit www.metasploit.com for more information)


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