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Vulnerability Details : CVE-2021-33910

basic/unit-name.c in systemd prior to 246.15, 247.8, 248.5, and 249.1 has a Memory Allocation with an Excessive Size Value (involving strdupa and alloca for a pathname controlled by a local attacker) that results in an operating system crash.
Publish Date : 2021-07-20 Last Update Date : 2021-11-23
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- CVSS Scores & Vulnerability Types

CVSS Score
4.9
Confidentiality Impact None (There is no impact to the confidentiality of the system.)
Integrity Impact None (There is no impact to the integrity of the system)
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)
CWE ID 770

- Related OVAL Definitions

Title Definition Id Class Family
RHSA-2021:2717: systemd security update (Important) oval:com.redhat.rhsa:def:20212717 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-2021-33910

# Product Type Vendor Product Version Update Edition Language
1 OS Debian Debian Linux 10.0 * * * Version Details Vulnerabilities
2 OS Fedoraproject Fedora 33 * * * Version Details Vulnerabilities
3 OS Fedoraproject Fedora 34 * * * Version Details Vulnerabilities
4 Application Freedesktop Systemd * * * * Version Details Vulnerabilities
5 Application Netapp Hci Management Node - * * * Version Details Vulnerabilities
6 Application Netapp Solidfire - * * * Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Debian Debian Linux 1
Fedoraproject Fedora 2
Freedesktop Systemd 1
Netapp Hci Management Node 1
Netapp Solidfire 1

- References For CVE-2021-33910

https://github.com/systemd/systemd/commit/b34a4f0e6729de292cb3b0c03c1d48f246ad896b
https://github.com/systemd/systemd-stable/commit/4a1c5f34bd3e1daed4490e9d97918e504d19733b
https://github.com/systemd/systemd-stable/commit/764b74113e36ac5219a4b82a05f311b5a92136ce
http://www.openwall.com/lists/oss-security/2021/08/17/3
MLIST [oss-security] 20210817 Re: Pop!_OS Membership to linux-distros list
https://lists.fedoraproject.org/archives/list/[email protected]/message/2LSDMHAKI4LGFOCSPXNVVSEWQFAVFWR7/
FEDORA FEDORA-2021-2a6ba64260
http://www.openwall.com/lists/oss-security/2021/08/04/2
MLIST [oss-security] 20210804 Re: Pop!_OS Membership to linux-distros list
https://github.com/systemd/systemd/pull/20256/commits/441e0115646d54f080e5c3bb0ba477c892861ab9
https://github.com/systemd/systemd-stable/commit/cfd14c65374027b34dbbc4f0551456c5dc2d1f61
https://github.com/systemd/systemd-stable/commit/b00674347337b7531c92fdb65590ab253bb57538
https://lists.fedoraproject.org/archives/list/[email protected]/message/42TMJVNYRY65B4QCJICBYOEIVZV3KUYI/
FEDORA FEDORA-2021-166e461c8d
http://www.openwall.com/lists/oss-security/2021/09/07/3
MLIST [oss-security] 20210907 Re: Pop!_OS Membership to linux-distros list
https://www.debian.org/security/2021/dsa-4942
DEBIAN DSA-4942
https://www.openwall.com/lists/oss-security/2021/07/20/2
http://packetstormsecurity.com/files/163621/Sequoia-A-Deep-Root-In-Linuxs-Filesystem-Layer.html
https://security.netapp.com/advisory/ntap-20211104-0008/ CONFIRM
https://security.gentoo.org/glsa/202107-48
GENTOO GLSA-202107-48

- Metasploit Modules Related To CVE-2021-33910

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


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