Vulnerability Description
An issue was discovered in klibc before 2.0.9. Additions in the malloc() function may result in an integer overflow and a subsequent heap buffer overflow.
CVSS Score
9.8
CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Klibc Project | Klibc | < 2.0.9 |
| Debian | Debian Linux | 9.0 |
Related Weaknesses (CWE)
References
- http://www.openwall.com/lists/oss-security/2021/04/30/1Mailing ListRelease NotesThird Party Advisory
- https://git.kernel.org/pub/scm/libs/klibc/klibc.git/commit/?id=a31ae8c508fc8d1bcPatchThird Party Advisory
- https://github.com/huolinjue/klibc/commit/a31ae8c508fc8d1bca4f57e9f9f88127572d52
- https://kernel.org/pub/linux/libs/klibc/2.0/Release NotesThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2021/06/msg00025.htmlMailing ListThird Party Advisory
- https://lists.zytor.com/archives/klibc/2021-April/004593.htmlMailing ListRelease NotesThird Party Advisory
- http://www.openwall.com/lists/oss-security/2021/04/30/1Mailing ListRelease NotesThird Party Advisory
- https://git.kernel.org/pub/scm/libs/klibc/klibc.git/commit/?id=a31ae8c508fc8d1bcPatchThird Party Advisory
- https://github.com/huolinjue/klibc/commit/a31ae8c508fc8d1bca4f57e9f9f88127572d52
- https://kernel.org/pub/linux/libs/klibc/2.0/Release NotesThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2021/06/msg00025.htmlMailing ListThird Party Advisory
- https://lists.zytor.com/archives/klibc/2021-April/004593.htmlMailing ListRelease NotesThird Party Advisory
FAQ
What is CVE-2021-31873?
CVE-2021-31873 is a vulnerability with a CVSS score of 9.8 (CRITICAL). An issue was discovered in klibc before 2.0.9. Additions in the malloc() function may result in an integer overflow and a subsequent heap buffer overflow.
How severe is CVE-2021-31873?
CVE-2021-31873 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2021-31873?
Check the references section above for vendor advisories and patch information. Affected products include: Klibc Project Klibc, Debian Debian Linux.