psybnc and grsecurity

Discuss usability issues, general maintenance, and general support issues for a grsecurity-enabled system.

psybnc and grsecurity

Postby addi » Sun Mar 07, 2004 2:01 pm

Everytime I start psybnc from a grsec enabled kernel psybnc dies.

(from dmesg)
grsec: From 212.30.214.106: signal 11 sent to /root/psybnc/psybnc[psybnc:21957] uid/euid:0/0 gid/egid:0/0, parent /sbin/init[init:1] uid/euid:0/0 gid/egid:0/0

Then I booted up a kernel without the grsecurity patch and i starts up fine.
I traced the cause of this to the "pcontext;" call in the source code of psybnc.

Is there a known problem with pcontext and grsecurity ?
Does anyone have any advice for me ragarding this error ?
addi
 
Posts: 2
Joined: Sun Mar 07, 2004 1:56 pm

Postby addi » Sun Mar 07, 2004 2:08 pm

Sorry forgot.

birta ~$ uname -r
2.4.25-grsec-2.0-rc5

And psybnc version 2.3.1

Here is the grsecurity part of the kernel .config file

#
# Grsecurity
#
CONFIG_GRKERNSEC=y
CONFIG_CRYPTO=y
CONFIG_CRYPTO_SHA256=y
# CONFIG_GRKERNSEC_LOW is not set
# CONFIG_GRKERNSEC_MID is not set
# CONFIG_GRKERNSEC_HI is not set
CONFIG_GRKERNSEC_CUSTOM=y

#
# PaX Control
#
CONFIG_GRKERNSEC_PAX_SOFTMODE=y
# CONFIG_GRKERNSEC_PAX_EI_PAX is not set
CONFIG_GRKERNSEC_PAX_PT_PAX_FLAGS=y
CONFIG_GRKERNSEC_PAX_NO_ACL_FLAGS=y
# CONFIG_GRKERNSEC_PAX_HAVE_ACL_FLAGS is not set
# CONFIG_GRKERNSEC_PAX_HOOK_ACL_FLAGS is not set

#
# Address Space Protection
#
CONFIG_GRKERNSEC_PAX_NOEXEC=y
# CONFIG_GRKERNSEC_PAX_PAGEEXEC is not set
# CONFIG_GRKERNSEC_PAX_SEGMEXEC is not set
# CONFIG_GRKERNSEC_PAX_MPROTECT is not set
# CONFIG_GRKERNSEC_PAX_KERNEXEC is not set
# CONFIG_GRKERNSEC_PAX_ASLR is not set
CONFIG_GRKERNSEC_KMEM=y
CONFIG_GRKERNSEC_IO=y
CONFIG_RTC=y
CONFIG_GRKERNSEC_PROC_MEMMAP=y
CONFIG_GRKERNSEC_HIDESYM=y

#
# Role Based Access Control Options
#
CONFIG_GRKERNSEC_ACL_HIDEKERN=y
CONFIG_GRKERNSEC_ACL_MAXTRIES=3
CONFIG_GRKERNSEC_ACL_TIMEOUT=30

#
# Filesystem Protections
#
CONFIG_GRKERNSEC_PROC=y
# CONFIG_GRKERNSEC_PROC_USER is not set
CONFIG_GRKERNSEC_PROC_USERGROUP=y
CONFIG_GRKERNSEC_PROC_GID=112
# CONFIG_GRKERNSEC_PROC_ADD is not set
CONFIG_GRKERNSEC_LINK=y
CONFIG_GRKERNSEC_FIFO=y
CONFIG_GRKERNSEC_CHROOT=y
CONFIG_GRKERNSEC_CHROOT_MOUNT=y
CONFIG_GRKERNSEC_CHROOT_DOUBLE=y
CONFIG_GRKERNSEC_CHROOT_PIVOT=y
CONFIG_GRKERNSEC_CHROOT_CHDIR=y
CONFIG_GRKERNSEC_CHROOT_CHMOD=y
CONFIG_GRKERNSEC_CHROOT_FCHDIR=y
CONFIG_GRKERNSEC_CHROOT_MKNOD=y
CONFIG_GRKERNSEC_CHROOT_SHMAT=y
CONFIG_GRKERNSEC_CHROOT_UNIX=y
CONFIG_GRKERNSEC_CHROOT_FINDTASK=y
# CONFIG_GRKERNSEC_CHROOT_NICE is not set
CONFIG_GRKERNSEC_CHROOT_SYSCTL=y
CONFIG_GRKERNSEC_CHROOT_CAPS=y

#
# Kernel Auditing
#
CONFIG_GRKERNSEC_AUDIT_GROUP=y
CONFIG_GRKERNSEC_AUDIT_GID=110
CONFIG_GRKERNSEC_EXECLOG=y
CONFIG_GRKERNSEC_RESLOG=y
CONFIG_GRKERNSEC_CHROOT_EXECLOG=y
# CONFIG_GRKERNSEC_AUDIT_CHDIR is not set
CONFIG_GRKERNSEC_AUDIT_MOUNT=y
# CONFIG_GRKERNSEC_AUDIT_IPC is not set
CONFIG_GRKERNSEC_SIGNAL=y
CONFIG_GRKERNSEC_FORKFAIL=y
# CONFIG_GRKERNSEC_TIME is not set
# CONFIG_GRKERNSEC_PROC_IPADDR is not set

#
# Executable Protections
#
CONFIG_GRKERNSEC_EXECVE=y
CONFIG_GRKERNSEC_DMESG=y
CONFIG_GRKERNSEC_RANDPID=y
CONFIG_GRKERNSEC_TPE=y
# CONFIG_GRKERNSEC_TPE_ALL is not set
CONFIG_GRKERNSEC_TPE_GID=111

#
# Network Protections
#
CONFIG_GRKERNSEC_RANDNET=y
CONFIG_GRKERNSEC_RANDISN=y
CONFIG_GRKERNSEC_RANDID=y
CONFIG_GRKERNSEC_RANDSRC=y
CONFIG_GRKERNSEC_RANDRPC=y
# CONFIG_GRKERNSEC_SOCKET is not set

#
#
# Sysctl support
#
# CONFIG_GRKERNSEC_SYSCTL is not set

#
# Logging options
#
CONFIG_GRKERNSEC_FLOODTIME=10
CONFIG_GRKERNSEC_FLOODBURST=4
addi
 
Posts: 2
Joined: Sun Mar 07, 2004 1:56 pm


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