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Subject[PATCH 2/9] exploit: report to audit subsystem when available
Date
From: Vegard Nossum <vegard.nossum@oracle.com>

Signed-off-by: Vegard Nossum <vegard.nossum@oracle.com>
---
include/uapi/linux/audit.h | 1 +
security/exploit.c | 16 ++++++++++++++++
2 files changed, 17 insertions(+)

diff --git a/include/uapi/linux/audit.h b/include/uapi/linux/audit.h
index 75cef3f..65811d4 100644
--- a/include/uapi/linux/audit.h
+++ b/include/uapi/linux/audit.h
@@ -131,6 +131,7 @@
#define AUDIT_ANOM_PROMISCUOUS 1700 /* Device changed promiscuous mode */
#define AUDIT_ANOM_ABEND 1701 /* Process ended abnormally */
#define AUDIT_ANOM_LINK 1702 /* Suspicious use of file links */
+#define AUDIT_ANOM_EXPLOIT 1703 /* Known exploit attempt */
#define AUDIT_INTEGRITY_DATA 1800 /* Data integrity verification */
#define AUDIT_INTEGRITY_METADATA 1801 /* Metadata integrity verification */
#define AUDIT_INTEGRITY_STATUS 1802 /* Integrity enable status */
diff --git a/security/exploit.c b/security/exploit.c
index a732613..3d8ee5b 100644
--- a/security/exploit.c
+++ b/security/exploit.c
@@ -1,3 +1,4 @@
+#include <linux/audit.h>
#include <linux/cred.h>
#include <linux/exploit.h>
#include <linux/printk.h>
@@ -19,9 +20,24 @@ void _exploit(const char *id)
pid_t pid = task_pid_nr(task);
uid_t uid = from_kuid(&init_user_ns, current_uid());
char comm[sizeof(task->comm)];
+#ifdef CONFIG_AUDIT
+ struct audit_buffer *ab;
+#endif

get_task_comm(comm, task);

+#ifdef CONFIG_AUDIT
+ ab = audit_log_start(NULL, GFP_ATOMIC, AUDIT_ANOM_EXPLOIT);
+ if (ab) {
+ audit_log_format(ab, "exploit id=%s pid=%u uid=%u auid=%u ses=%u comm=",
+ id, pid, uid,
+ from_kuid(&init_user_ns, audit_get_loginuid(task)),
+ audit_get_sessionid(task));
+ audit_log_untrustedstring(ab, comm);
+ audit_log_end(ab);
+ }
+#endif
+
pr_warn_ratelimited("warning: possible %s exploit attempt by pid=%u uid=%u comm=%s\n",
id, pid, uid, comm);
}
--
1.7.10.4


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