ComputerSurge/bind9
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prevent a possible buffer overflow in configuration check

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corrected code that could have allowed a buffer overfow while
parsing named.conf.

(cherry picked from commit 921043b541)
This commit is contained in:
Evan Hunt
2022-05-13 19:59:58 -07:00
parent 57f50fcd13
commit e117244850
1 changed files with 2 additions and 2 deletions
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4
lib/bind9/check.c
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@@ -3011,8 +3011,8 @@ check_zoneconf(const cfg_obj_t *zconfig, const cfg_obj_t *voptions,
} else if (dns_name_isula(zname)) {
ula = true;
}
tmp += strlen(tmp);
len -= strlen(tmp);
tmp += strlen(tmp);
(void)snprintf(tmp, len, "%u/%s", zclass,
(ztype == CFG_ZONE_INVIEW) ? target
: (viewname != NULL) ? viewname
@@ -3721,8 +3721,8 @@ check_zoneconf(const cfg_obj_t *zconfig, const cfg_obj_t *voptions,
char *tmp = keydirbuf;
size_t len = sizeof(keydirbuf);
dns_name_format(zname, keydirbuf, sizeof(keydirbuf));
tmp += strlen(tmp);
len -= strlen(tmp);
tmp += strlen(tmp);
(void)snprintf(tmp, len, "/%s", (dir == NULL) ? "(null)" : dir);
tresult = keydirexist(zconfig, (const char *)keydirbuf,
kaspname, keydirs, logctx, mctx);