Mercurial > dropbear
changeset 1450:5b25d86b865b fuzz
check dss g range
| author | Matt Johnston <matt@ucc.asn.au> |
|---|---|
| date | Mon, 14 Aug 2017 00:00:10 +0800 |
| parents | ea150e3e95a6 |
| children | 4afde04f0607 |
| files | dss.c |
| diffstat | 1 files changed, 12 insertions(+), 0 deletions(-) [+] |
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--- a/dss.c Fri Jun 30 21:10:57 2017 +0800 +++ b/dss.c Mon Aug 14 00:00:10 2017 +0800 @@ -73,6 +73,18 @@ goto out; } + /* test 1 < g < p */ + if (mp_cmp_d(key->g, 1) != MP_GT) { + dropbear_log(LOG_WARNING, "Bad DSS g"); + ret = DROPBEAR_FAILURE; + goto out; + } + if (mp_cmp(key->g, key->p) != MP_LT) { + dropbear_log(LOG_WARNING, "Bad DSS g"); + ret = DROPBEAR_FAILURE; + goto out; + } + ret = DROPBEAR_SUCCESS; TRACE(("leave buf_get_dss_pub_key: success")) out: