4.6 Medium
CVSS2
Access Vector
LOCAL
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:L/AC:L/Au:N/C:P/I:P/A:P
0.0004 Low
EPSS
Percentile
5.2%
Stack-based buffer overflow in lib/sh/eaccess.c in GNU Bash before 4.2
patch 33 might allow local users to bypass intended restricted shell access
via a long filename in /dev/fd, which is not properly handled when
expanding the /dev/fd prefix.
Author | Note |
---|---|
jdstrand | reproducer in oss thread verified that compiler hardening blocks this on all releases (-D_FORTIFY_SOURCE=2 on 10.04 LTS+ and -fstack-protector on 8.04 LTS) |
mdeslaur | since this gets blocked, it is not a security issue. Ignoring. |