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Vulnerability Details : CVE-2021-3593

An invalid pointer initialization issue was found in the SLiRP networking implementation of QEMU. The flaw exists in the udp6_input() function and could occur while processing a udp packet that is smaller than the size of the 'udphdr' structure. This issue may lead to out-of-bounds read access or indirect host memory disclosure to the guest. The highest threat from this vulnerability is to data confidentiality. This flaw affects libslirp versions prior to 4.6.0.
Publish Date : 2021-06-15 Last Update Date : 2021-09-20
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- CVSS Scores & Vulnerability Types

CVSS Score
2.1
Confidentiality Impact Partial (There is considerable informational disclosure.)
Integrity Impact None (There is no impact to the integrity of the system)
Availability Impact None (There is no impact to the availability of the system.)
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 824

- Related OVAL Definitions

Title Definition Id Class Family
RHSA-2021:4191: virt:rhel and virt-devel:rhel security, bug fix, and enhancement update (Moderate) oval:com.redhat.rhsa:def:20214191 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-2021-3593

# Product Type Vendor Product Version Update Edition Language
1 OS Fedoraproject Fedora 33 * * * Version Details Vulnerabilities
2 OS Fedoraproject Fedora 34 * * * Version Details Vulnerabilities
3 Application Libslirp Project Libslirp * * * * Version Details Vulnerabilities
4 OS Redhat Enterprise Linux 8.0 * * * Version Details Vulnerabilities
5 OS Redhat Enterprise Linux 8.0 * * * Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Fedoraproject Fedora 2
Libslirp Project Libslirp 1
Redhat Enterprise Linux 2

- References For CVE-2021-3593

https://bugzilla.redhat.com/show_bug.cgi?id=1970487
https://security.gentoo.org/glsa/202107-44
GENTOO GLSA-202107-44
https://lists.fedoraproject.org/archives/list/[email protected]/message/GCKWZWY64EHTOQMLVLTSZ4AA27EWRJMH/
FEDORA FEDORA-2021-71de23bedd
https://security.netapp.com/advisory/ntap-20210805-0004/ CONFIRM
https://lists.fedoraproject.org/archives/list/[email protected]/message/SGPQZFVJCFGDSISFXPCQTTBBD7QZLJKI/
FEDORA FEDORA-2021-7cd749f133

- Metasploit Modules Related To CVE-2021-3593

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


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