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Vulnerability Details : CVE-2021-3347

An issue was discovered in the Linux kernel through 5.10.11. PI futexes have a kernel stack use-after-free during fault handling, allowing local users to execute code in the kernel, aka CID-34b1a1ce1458.
Publish Date : 2021-01-29 Last Update Date : 2021-03-15
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- CVSS Scores & Vulnerability Types

CVSS Score
7.2
Confidentiality Impact Complete (There is total information disclosure, resulting in all system files being revealed.)
Integrity Impact Complete (There is a total compromise of system integrity. There is a complete loss of system protection, resulting in the entire system being compromised.)
Availability Impact Complete (There is a total shutdown of the affected resource. The attacker can render the resource completely unavailable.)
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) Execute Code
CWE ID 416

- Related OVAL Definitions

Title Definition Id Class Family
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
RHSA-2021:2285: kpatch-patch security update (Important) oval:com.redhat.rhsa:def:20212285 unix
RHSA-2021:2314: kernel security and bug fix update (Important) oval:com.redhat.rhsa:def:20212314 unix
RHSA-2021:2316: kernel-rt security and bug fix update (Important) oval:com.redhat.rhsa:def:20212316 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-2021-3347

# Product Type Vendor Product Version Update Edition Language
1 OS Debian Debian Linux 9.0 * * * Version Details Vulnerabilities
2 OS Debian Debian Linux 10.0 * * * Version Details Vulnerabilities
3 OS Fedoraproject Fedora 32 * * * Version Details Vulnerabilities
4 OS Fedoraproject Fedora 33 * * * Version Details Vulnerabilities
5 OS Linux Linux Kernel * * * * Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Debian Debian Linux 2
Fedoraproject Fedora 2
Linux Linux Kernel 1

- References For CVE-2021-3347

https://lists.debian.org/debian-lts-announce/2021/02/msg00018.html
MLIST [debian-lts-announce] 20210212 [SECURITY] [DLA 2557-1] linux-4.19 security update
https://security.netapp.com/advisory/ntap-20210304-0005/ CONFIRM
https://lists.debian.org/debian-lts-announce/2021/03/msg00010.html
MLIST [debian-lts-announce] 20210309 [SECURITY] [DLA 2586-1] linux security update
https://www.debian.org/security/2021/dsa-4843
DEBIAN DSA-4843
https://lists.fedoraproject.org/archives/list/[email protected]/message/QOBMXDJABYE76RKNBAWA2E4TSSBX7CSJ/
FEDORA FEDORA-2021-879c756377
https://lists.fedoraproject.org/archives/list/[email protected]/message/CXAVDAK4RLAHBHHGEPL73UFXSI6BXQ7Q/
FEDORA FEDORA-2021-6e805a5051
http://www.openwall.com/lists/oss-security/2021/01/29/4
MLIST [oss-security] 20210129 Re: Linux Kernel: local priv escalation via futexes
http://www.openwall.com/lists/oss-security/2021/02/01/4
MLIST [oss-security] 20210201 Re: Linux Kernel: local priv escalation via futexes
https://www.openwall.com/lists/oss-security/2021/01/29/1
http://www.openwall.com/lists/oss-security/2021/01/29/5
MLIST [oss-security] 20210129 Re: Linux Kernel: local priv escalation via futexes
https://www.openwall.com/lists/oss-security/2021/01/29/3
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=04b79c55201f02ffd675e1231d731365e335c307
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c5cade200ab9a2a3be9e7f32a752c8d86b502ec7
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=6ccc84f917d33312eb2846bd7b567639f585ad6d
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=2156ac1934166d6deb6cd0f6ffc4c1076ec63697
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c64396cc36c6e60704ab06c1fb1c4a46179c9120
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=12bb3f7f1b03d5913b3f9d4236a488aa7774dfe9
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f2dac39d93987f7de1e20b3988c8685523247ae2
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=34b1a1ce1458f50ef27c54e28eb9b1947012907a

- Metasploit Modules Related To CVE-2021-3347

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


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