From f11943c53ec181829a821c6b27acf828bab71caa Mon Sep 17 00:00:00 2001 From: Lennart Poettering Date: Thu, 29 Jan 2015 02:47:29 +0100 Subject: coredump: drop caps while we are processing the coredump https://bugs.freedesktop.org/show_bug.cgi?id=87354 --- src/journal/coredump.c | 21 +++++++++++---------- 1 file changed, 11 insertions(+), 10 deletions(-) (limited to 'src/journal') diff --git a/src/journal/coredump.c b/src/journal/coredump.c index d322e7984c..f6b95145d2 100644 --- a/src/journal/coredump.c +++ b/src/journal/coredump.c @@ -31,9 +31,8 @@ # include #endif -#include "systemd/sd-journal.h" -#include "systemd/sd-login.h" - +#include "sd-journal.h" +#include "sd-login.h" #include "log.h" #include "util.h" #include "fileio.h" @@ -42,14 +41,15 @@ #include "mkdir.h" #include "special.h" #include "cgroup-util.h" -#include "journald-native.h" #include "conf-parser.h" #include "copy.h" #include "stacktrace.h" #include "path-util.h" #include "compress.h" -#include "coredump-vacuum.h" #include "acl-util.h" +#include "capability.h" +#include "journald-native.h" +#include "coredump-vacuum.h" /* The maximum size up to which we process coredumps */ #define PROCESS_SIZE_MAX ((off_t) (2LLU*1024LLU*1024LLU*1024LLU)) @@ -810,11 +810,12 @@ int main(int argc, char* argv[]) { * segfaulted process and allocate the coredump memory under * the user's uid. This also ensures that the credentials * journald will see are the ones of the coredumping user, - * thus making sure the user gets access to the core dump. */ - if (setresgid(gid, gid, gid) < 0 || - setresuid(uid, uid, uid) < 0) { - log_error_errno(errno, "Failed to drop privileges: %m"); - r = -errno; + * thus making sure the user gets access to the core + * dump. Let's also get rid of all capabilities, if we run as + * root, we won't need them anymore. */ + r = drop_privileges(uid, gid, 0); + if (r < 0) { + log_error_errno(r, "Failed to drop privileges: %m"); goto finish; } -- cgit v1.2.3-54-g00ecf