CVE-2021-31870
Published: 30 April 2021
An issue was discovered in klibc before 2.0.9. Multiplication in the calloc() function may result in an integer overflow and a subsequent heap buffer overflow.
Notes
| Author | Note |
|---|---|
| mdeslaur | only used in initramfs, doesn't parse untrusted data |
Priority
Status
| Package | Release | Status |
|---|---|---|
|
klibc Launchpad, Ubuntu, Debian |
bionic |
Released
(2.0.4-9ubuntu2.1)
|
| focal |
Released
(2.0.7-1ubuntu5.1)
|
|
| groovy |
Ignored
(end of life)
|
|
| hirsute |
Ignored
(end of life)
|
|
| impish |
Not vulnerable
(2.0.8-6.1ubuntu2)
|
|
| jammy |
Not vulnerable
(2.0.8-6.1ubuntu2)
|
|
| trusty |
Released
(2.0.3-0ubuntu1.14.04.3+esm2)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only) |
|
| upstream |
Released
(2.0.8-6)
|
|
| xenial |
Released
(2.0.4-8ubuntu1.16.04.4+esm1)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only) |
|
|
Patches: upstream: https://git.kernel.org/pub/scm/libs/klibc/klibc.git/commit/?id=292650f04c2b5348b4efbad61fb014ed09b4f3f2 |
||
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 9.8 |
| 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 |