Integer overflow in Klibc Project
CVE-2021-31871
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.
Vulnerability class: Integer Overflow
EPSS: 0.019 (77.1th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Klibc_project Klibc
- Debian Debian_linux — versions 9.0
- N/a — versions n/a
Weakness classification (CWE)
Public proof-of-concept exploits
References
- cve@mitre.org (Third Party Advisory, x_refsource_MISC, Release Notes)
- cve@mitre.org (Mailing List, Third Party Advisory, x_refsource_MISC, Release Notes)
- cve@mitre.org (Patch, Third Party Advisory, x_refsource_MISC)
- cve@mitre.org (mailing-list, x_refsource_MLIST, Mailing List, Third Party Advisory, Release Notes)
- cve@mitre.org (mailing-list, x_refsource_MLIST, Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-31871?
- CVE-2021-31871 is a high-severity vulnerability in Klibc Project, classified under Integer Overflow or Wraparound. CVSS score: 7.5/10. Published 2021-04-30.
- How severe is CVE-2021-31871?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2021-31871 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.