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CVE-2021-3593

Common vulnerabilities & exposures (CVE)

CVE databaseCVE database blogpostRelease & EoL database
 
Published at: - 15-06-2021 11:15
Last modified: - 13-05-2022 07:30
Total changes: - 9

Description

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.

Common Vulnerability Scoring System (CVSS)

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N
Low
Attack complexity
Local
Attack vector
None
Availability
Low
Confidentiality
None
Integrity
Low
Privileges required
Changed
Scope
None
User interaction
3.8
Base score
2.0
1.4
Exploitability score
Impact score
 

Verification logic

OR
OR
vendor=libslirp_project AND product=libslirp AND versionEndExcluding=4.6.0
OR
vendor=Red Hat Enterprise Linux AND product=enterprise_linux AND version=8.0
vendor=Red Hat Enterprise Linux AND product=enterprise_linux AND version=8.0 AND software_edition=advanced_virtualization
OR
vendor=fedoraproject AND product=fedora AND version=33
vendor=fedoraproject AND product=fedora AND version=34
OR
vendor=Debian AND product=debian_linux AND version=9.0
 

Reference

 


Keywords

NVD

 

CVE-2021-3593

 

CVE

 

Common vulnerabilities & exposures

 

CVSS

 

Common vulnerability scoring system

 

Security

 

Vulnerabilities

 

Exposures

 

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