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res_pjsip_authenticator_digest: Fix md5 hash buffer

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An md5 hash is 32 bytes long. The char buffer must be at least 33 bytes to
avoid clobbering of the stack. This patch also fixes a potential clobbering
in test_utils.c.

Thanks to Andrew Nagy for reporting and testing this out in #asterisk-dev

Reported by: Andrew Nagy
Tested by: Andrew Nagy
........

Merged revisions 404843 from http://svn.asterisk.org/svn/asterisk/branches/12


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@404844 65c4cc65-6c06-0410-ace0-fbb531ad65f3
This commit is contained in:
Matthew Jordan
2014-01-03 21:13:30 +00:00
parent bd4be333fb
commit c6df713da7
2 changed files with 2 additions and 2 deletions
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2
res/res_pjsip_authenticator_digest.c
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@@ -200,7 +200,7 @@ static int build_nonce(struct ast_str **nonce, const char *timestamp, const pjsi
{
struct ast_str *str = ast_str_alloca(256);
RAII_VAR(char *, eid, ao2_global_obj_ref(entity_id), ao2_cleanup);
char hash[32];
char hash[33];
ast_str_append(&str, 0, "%s", timestamp);
ast_str_append(&str, 0, ":%s", rdata->pkt_info.src_name);