1 files changed, 13 insertions, 0 deletions

diff --git a/src/firejail/profile.c b/src/firejail/profile.c
index acf206da6..c1419aada 100644
--- a/src/firejail/profile.c
+++ b/src/firejail/profile.c
@@ -326,11 +326,24 @@ int profile_check_line(char *ptr, int lineno, const char *fname) {
         }
         // sandbox name
         else if (strncmp(ptr, "name ", 5) == 0) {
+                int only_numbers = 1;
                 cfg.name = ptr + 5;
                 if (strlen(cfg.name) == 0) {
                         fprintf(stderr, "Error: invalid sandbox name\n");
                         exit(1);
                 }
+                const char *c = cfg.name;
+                while (*c) {
+                        if (!isdigit(*c)) {
+                                only_numbers = 0;
+                                break;
+                        }
+                        ++c;
+                }
+                if (only_numbers) {
+                        fprintf(stderr, "Error: invalid sandbox name: it only contains digits\n");
+                        exit(1);
+                }
                 return 0;
         }
         else if (strcmp(ptr, "ipc-namespace") == 0) {