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| author | Andreas Schwab <schwab@suse.de> | 2014-05-08 16:53:01 +0200 |
|---|---|---|
| committer | Andreas Schwab <schwab@suse.de> | 2014-05-12 15:17:51 +0200 |
| commit | 315eb1d86aea489cd6325fd1c2521dcfb4fc0e1c (patch) | |
| tree | 95e476e2d0ce5885684e619ddbcb5996241f4c94 /nis/nss_nis/nis-initgroups.c | |
| parent | 91df99f7f25d7b63ba36d54e41bc33ac6901f22d (diff) | |
| download | glibc-315eb1d86aea489cd6325fd1c2521dcfb4fc0e1c.tar.gz | |
Fix unbound stack use in NIS NSS module
Diffstat (limited to 'nis/nss_nis/nis-initgroups.c')
| -rw-r--r-- | nis/nss_nis/nis-initgroups.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/nis/nss_nis/nis-initgroups.c b/nis/nss_nis/nis-initgroups.c index e8fcca1bb1..9542faea48 100644 --- a/nis/nss_nis/nis-initgroups.c +++ b/nis/nss_nis/nis-initgroups.c @@ -150,6 +150,13 @@ initgroups_netid (uid_t uid, gid_t group, long int *start, long int *size, gid_t **groupsp, long int limit, int *errnop, const char *domainname) { + /* Limit domainname length to the maximum size of an RPC packet. */ + if (strlen (domainname) > UDPMSGSIZE) + { + *errnop = ERANGE; + return NSS_STATUS_UNAVAIL; + } + /* Prepare the key. The form is "unix.UID@DOMAIN" with the UID and DOMAIN field filled in appropriately. */ char key[sizeof ("unix.@") + sizeof (uid_t) * 3 + strlen (domainname)]; |