CVE-2021-3420
Publication date 5 March 2021
Last updated 24 July 2024
Ubuntu priority
Cvss 3 Severity Score
A flaw was found in newlib in versions prior to 4.0.0. Improper overflow validation in the memory allocation functions mEMALIGn, pvALLOc, nano_memalign, nano_valloc, nano_pvalloc could case an integer overflow, leading to an allocation of a small buffer and then to a heap-based buffer overflow.
Status
Package | Ubuntu Release | Status |
---|---|---|
gcc-snapshot | 24.10 oracular |
Not affected
|
24.04 LTS noble |
Not affected
|
|
22.04 LTS jammy | Ignored end of standard support, was needs-triage | |
20.04 LTS focal | Ignored end of standard support, was needs-triage | |
18.04 LTS bionic |
Not affected
|
|
16.04 LTS xenial |
Not affected
|
|
14.04 LTS trusty | Ignored end of standard support | |
newlib | 24.10 oracular |
Not affected
|
24.04 LTS noble |
Vulnerable
|
|
22.04 LTS jammy | Ignored end of standard support, was needs-triage | |
20.04 LTS focal | Ignored end of standard support, was needs-triage | |
18.04 LTS bionic |
Vulnerable
|
|
16.04 LTS xenial |
Vulnerable
|
|
14.04 LTS trusty | Not in release |
Notes
eslerm
fixed for newlib-4.0.0 on 2020-11-17 with aa106b29a ("malloc/nano-malloc: correctly check for out-of-bounds allocation reqs")
Severity score breakdown
Parameter | Value |
---|---|
Base score |
|
Attack vector | Network |
Attack complexity | Low |
Privileges required | None |
User interaction | None |
Scope | Unchanged |
Confidentiality | High |
Integrity impact | High |
Availability impact | High |
Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |