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CVE-2021-31870

critical

Description

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.

References

https://lists.zytor.com/archives/klibc/2021-April/004593.html

https://lists.debian.org/debian-lts-announce/2021/06/msg00025.html

https://kernel.org/pub/linux/libs/klibc/2.0/

https://git.kernel.org/pub/scm/libs/klibc/klibc.git/commit/?id=292650f04c2b5348b4efbad61fb014ed09b4f3f2

http://www.openwall.com/lists/oss-security/2021/04/30/1

Details

Source: Mitre, NVD

Published: 2021-04-30

Updated: 2024-11-21

Risk Information

CVSS v2

Base Score: 7.5

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P

Severity: High

CVSS v3

Base Score: 9.8

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Severity: Critical

EPSS

EPSS: 0.00233