9.8

CVE-2021-31873

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Klibc Project ≫ Klibc Version < 2.0.9
Debian ≫ Debian Linux Version9.0
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 2.15% 0.797
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 9.8 3.9 5.9
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
nvd@nist.gov 7.5 10 6.4
AV:N/AC:L/Au:N/C:P/I:P/A:P
CWE-190 Integer Overflow or Wraparound

The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.

http://www.openwall.com/lists/oss-security/2021/04/30/1
Third Party Advisory
Mailing List
Release Notes
https://kernel.org/pub/linux/libs/klibc/2.0/
Third Party Advisory
Release Notes
https://lists.debian.org/debian-lts-announce/2021/06/msg00025.html
Third Party Advisory
Mailing List
https://lists.zytor.com/archives/klibc/2021-April/004593.html
Third Party Advisory
Mailing List
Release Notes
https://git.kernel.org/pub/scm/libs/klibc/klibc.git/commit/?id=a31ae8c508fc8d1bca4f57e9f9f88127572d5202
Patch
Third Party Advisory
https://github.com/huolinjue/klibc/commit/a31ae8c508fc8d1bca4f57e9f9f88127572d5202