CVE-2021-3593
Publication date 15 June 2021
Last updated 24 July 2024
Ubuntu priority
Cvss 3 Severity Score
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.
Status
Package | Ubuntu Release | Status |
---|---|---|
libslirp | 24.04 LTS noble |
Fixed 4.6.1-1
|
22.04 LTS jammy |
Fixed 4.6.1-1
|
|
20.04 LTS focal |
Fixed 4.1.0-2ubuntu2.2
|
|
18.04 LTS bionic | Not in release | |
16.04 LTS xenial | Ignored end of standard support | |
14.04 LTS trusty | Not in release | |
qemu | 24.04 LTS noble |
Not affected
|
22.04 LTS jammy |
Not affected
|
|
20.04 LTS focal |
Not affected
|
|
18.04 LTS bionic |
Fixed 1:2.11+dfsg-1ubuntu7.37
|
|
16.04 LTS xenial |
Vulnerable
|
|
14.04 LTS trusty |
Vulnerable
|
Severity score breakdown
Parameter | Value |
---|---|
Base score | 3.8 · Low |
Attack vector | Local |
Attack complexity | Low |
Privileges required | Low |
User interaction | None |
Scope | Changed |
Confidentiality | Low |
Integrity impact | None |
Availability impact | None |
Vector | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N |
References
Related Ubuntu Security Notices (USN)
- USN-5009-1
- libslirp vulnerabilities
- 15 July 2021
- USN-5010-1
- QEMU vulnerabilities
- 15 July 2021
- USN-5009-2
- libslirp vulnerabilities
- 26 October 2021