glibc/sysdeps/generic/unsecvars.h
Adhemerval Zanella 876a12e513 elf: Ignore loader debug env vars for setuid
Loader already ignores LD_DEBUG, LD_DEBUG_OUTPUT, and
LD_TRACE_LOADED_OBJECTS. Both LD_WARN and LD_VERBOSE are similar to
LD_DEBUG, in the sense they enable additional checks and debug
information, so it makes sense to disable them.

Also add both LD_VERBOSE and LD_WARN on filtered environment variables
for setuid binaries.

Checked on x86_64-linux-gnu.
Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
2023-12-05 13:21:36 -03:00

37 lines
1.2 KiB
C

/* Environment variable to be removed for SUID programs. The names are
all stuffed in a single string which means they have to be terminated
with a '\0' explicitly. */
#define UNSECURE_ENVVARS \
"GCONV_PATH\0" \
"GETCONF_DIR\0" \
"GLIBC_TUNABLES\0" \
"HOSTALIASES\0" \
"LD_AUDIT\0" \
"LD_DEBUG\0" \
"LD_DEBUG_OUTPUT\0" \
"LD_DYNAMIC_WEAK\0" \
"LD_HWCAP_MASK\0" \
"LD_LIBRARY_PATH\0" \
"LD_ORIGIN_PATH\0" \
"LD_PRELOAD\0" \
"LD_PROFILE\0" \
"LD_SHOW_AUXV\0" \
"LD_VERBOSE\0" \
"LD_WARN\0" \
"LOCALDOMAIN\0" \
"LOCPATH\0" \
"MALLOC_ARENA_MAX\0" \
"MALLOC_ARENA_TEST\0" \
"MALLOC_MMAP_MAX_\0" \
"MALLOC_MMAP_THRESHOLD_\0" \
"MALLOC_PERTURB_\0" \
"MALLOC_TOP_PAD_\0" \
"MALLOC_TRACE\0" \
"MALLOC_TRIM_THRESHOLD_\0" \
"NIS_PATH\0" \
"NLSPATH\0" \
"RESOLV_HOST_CONF\0" \
"RES_OPTIONS\0" \
"TMPDIR\0" \
"TZDIR\0"