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[PATCH 0/2] Environment variable security and tunables
- From: Siddhesh Poyarekar <siddhesh at sourceware dot org>
- To: libc-alpha at sourceware dot org
- Cc: fweimer at redhat dot com
- Date: Wed, 25 Jan 2017 14:55:09 +0530
- Subject: [PATCH 0/2] Environment variable security and tunables
- Authentication-results: sourceware.org; auth=none
Hi,
Here's a patchset that fixes environment variable processing for AT_SECURE
processes. The second patch removes GLIBC_TUNABLES from AT_SECURE processes
even when tunables are not built, to avoid passing on the variable (and hence
unsafe tunables) to child processes who may end up loading a glibc with
tunables enabled.
I will follow up with a patch for 2.24 to add GLIBC_TUNABLES to
unsecure-envvars.
Siddhesh
Siddhesh Poyarekar (2):
tunables: Fix environment variable processing for setuid binaries
Erase GLIBC_TUNABLES for setxid processes when tunables is disabled
elf/dl-tunable-types.h | 15 +++++
elf/dl-tunables.c | 165 +++++++++++++++++++++++++++++------------------
elf/dl-tunables.h | 64 ++++++++++++++++--
elf/dl-tunables.list | 16 ++++-
scripts/gen-tunables.awk | 8 +--
5 files changed, 191 insertions(+), 77 deletions(-)
--
2.7.4