The getgrouplist function in GNU libc (glibc) 2.2.4 and earlier allows attackers to cause a denial of service (segmentation fault) and execute arbitrary code when a user is a member of a large number of groups, which can cause a buffer overflow.
http://www.redhat.com/support/errata/RHSA-2003-325.html
http://www.redhat.com/support/errata/RHSA-2003-249.html
Source: Mitre, NVD
Published: 2003-10-20
Updated: 2008-09-10
Base Score: 7.5
Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P
Severity: High
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