CVE-2021-31871

moderate-risk
Published 2021-04-30

An issue was discovered in klibc before 2.0.9. An integer overflow in the cpio command may result in a NULL pointer dereference on 64-bit systems.

Do I need to act?

~
1.6% chance of exploitation in next 30 days
EPSS score — moderate exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
7
CVSS 7.5/10 High
NETWORK / LOW complexity

Affected Products (2)

Affected Vendors

Debian Klibc Project

References (10)

Mailing List http://www.openwall.com/lists/oss-security/2021/04/30/1
Patch https://git.kernel.org/pub/scm/libs/klibc/klibc.git/commit/?id=2e48a12ab1e30d434...
Release Notes https://kernel.org/pub/linux/libs/klibc/2.0/
Mailing List https://lists.debian.org/debian-lts-announce/2021/06/msg00025.html
Mailing List https://lists.zytor.com/archives/klibc/2021-April/004593.html
Mailing List http://www.openwall.com/lists/oss-security/2021/04/30/1
Patch https://git.kernel.org/pub/scm/libs/klibc/klibc.git/commit/?id=2e48a12ab1e30d434...
Release Notes https://kernel.org/pub/linux/libs/klibc/2.0/
Mailing List https://lists.debian.org/debian-lts-announce/2021/06/msg00025.html
Mailing List https://lists.zytor.com/archives/klibc/2021-April/004593.html
37
/ 100
moderate-risk
Severity 26/34 · High
Exploitability 4/34 · Minimal
Exposure 7/34 · Low