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authorZbigniew Jędrzejewski-Szmek <zbyszek@in.waw.pl>2015-11-23 13:59:43 -0500
committerZbigniew Jędrzejewski-Szmek <zbyszek@in.waw.pl>2015-11-23 13:59:43 -0500
commitcb31827d62066a04b02111df3052949fda4b6888 (patch)
treec3ba78ff582bf9ff3426a904c003b165ea62e711
parent681c8d81bdc946360d13185632d1920ffaeb5ad9 (diff)
nss-mymachines: do not allow overlong machine names
https://github.com/systemd/systemd/issues/2002
-rw-r--r--src/nss-mymachines/nss-mymachines.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/src/nss-mymachines/nss-mymachines.c b/src/nss-mymachines/nss-mymachines.c
index 969fa9619e..c98a959b3b 100644
--- a/src/nss-mymachines/nss-mymachines.c
+++ b/src/nss-mymachines/nss-mymachines.c
@@ -416,6 +416,9 @@ enum nss_status _nss_mymachines_getpwnam_r(
if (!e || e == p)
goto not_found;
+ if (e - p > HOST_NAME_MAX - 1) /* -1 for the last dash */
+ goto not_found;
+
r = parse_uid(e + 1, &uid);
if (r < 0)
goto not_found;
@@ -573,6 +576,9 @@ enum nss_status _nss_mymachines_getgrnam_r(
if (!e || e == p)
goto not_found;
+ if (e - p > HOST_NAME_MAX - 1) /* -1 for the last dash */
+ goto not_found;
+
r = parse_gid(e + 1, &gid);
if (r < 0)
goto not_found;