63 lines
3.7 KiB
Diff
63 lines
3.7 KiB
Diff
From 82c23fb1f0d9e46c6ce4bc4a57f0d377cc6089b7 Mon Sep 17 00:00:00 2001
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From: =?UTF-8?q?Petr=20Men=C5=A1=C3=ADk?= <pemensik@redhat.com>
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Date: Fri, 3 Sep 2021 22:51:36 +0200
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Subject: [PATCH 15/15] Fix coverity issues in dnssec.c
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Error: CHECKED_RETURN (CWE-252): [#def26]
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dnsmasq-2.86rc3/src/dnssec.c:727: check_return: Calling "extract_name" without checking return value (as is done elsewhere 9 out of 10 times).
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dnsmasq-2.86rc3/src/dnssec.c:459: example_checked: Example 1: "extract_name(header, plen, &p, keyname, 1, 0)" has its value checked in "extract_name(header, plen, &p, keyname, 1, 0)".
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dnsmasq-2.86rc3/src/dnssec.c:269: example_checked: Example 2: "extract_name(header, plen, &state->ip, state->buff, 1, 0)" has its value checked in "extract_name(header, plen, &state->ip, state->buff, 1, 0)".
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dnsmasq-2.86rc3/src/dnssec.c:569: example_checked: Example 3: "extract_name(header, plen, &p, keyname, 1, 0)" has its value checked in "extract_name(header, plen, &p, keyname, 1, 0)".
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dnsmasq-2.86rc3/src/rfc1035.c:648: example_checked: Example 4: "extract_name(header, qlen, &p1, name, 1, 0)" has its value checked in "extract_name(header, qlen, &p1, name, 1, 0)".
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dnsmasq-2.86rc3/src/rfc1035.c:787: example_checked: Example 5: "extract_name(header, qlen, &p1, name, 1, 0)" has its value checked in "extract_name(header, qlen, &p1, name, 1, 0)".
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# 725| /* namebuff used for workspace above, restore to leave unchanged on exit */
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# 726| p = (unsigned char*)(rrset[0]);
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# 727|-> extract_name(header, plen, &p, name, 1, 0);
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# 728|
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# 729| if (key)
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Error: CHECKED_RETURN (CWE-252): [#def27]
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dnsmasq-2.86rc3/src/dnssec.c:1020: check_return: Calling "extract_name" without checking return value (as is done elsewhere 7 out of 8 times).
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dnsmasq-2.86rc3/src/auth.c:140: example_checked: Example 1: "extract_name(header, qlen, &p, name, 1, 4)" has its value checked in "extract_name(header, qlen, &p, name, 1, 4)".
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dnsmasq-2.86rc3/src/dnssec.c:771: example_checked: Example 2: "extract_name(header, plen, &p, name, 1, 4)" has its value checked in "extract_name(header, plen, &p, name, 1, 4)".
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dnsmasq-2.86rc3/src/hash-questions.c:57: example_checked: Example 3: "extract_name(header, plen, &p, name, 1, 4)" has its value checked in "extract_name(header, plen, &p, name, 1, 4)".
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dnsmasq-2.86rc3/src/rfc1035.c:1028: example_checked: Example 4: "extract_name(header, qlen, &p, name, 1, 4)" has its value checked in "extract_name(header, qlen, &p, name, 1, 4)".
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dnsmasq-2.86rc3/src/rfc1035.c:1438: example_checked: Example 5: "extract_name(header, qlen, &p, name, 1, 4)" has its value checked in "extract_name(header, qlen, &p, name, 1, 4)".
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# 1018|
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# 1019| p = (unsigned char *)(header+1);
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# 1020|-> extract_name(header, plen, &p, name, 1, 4);
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# 1021| p += 4; /* qtype, qclass */
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# 1022|
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---
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src/dnssec.c | 7 +++++--
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1 file changed, 5 insertions(+), 2 deletions(-)
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diff --git a/src/dnssec.c b/src/dnssec.c
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index 94ebb6f..8800a5b 100644
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--- a/src/dnssec.c
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+++ b/src/dnssec.c
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@@ -724,7 +724,8 @@ static int validate_rrset(time_t now, struct dns_header *header, size_t plen, in
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/* namebuff used for workspace above, restore to leave unchanged on exit */
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p = (unsigned char*)(rrset[0]);
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- extract_name(header, plen, &p, name, 1, 0);
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+ if (!extract_name(header, plen, &p, name, 1, 0))
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+ return STAT_BOGUS;
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if (key)
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{
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@@ -1017,7 +1018,9 @@ int dnssec_validate_ds(time_t now, struct dns_header *header, size_t plen, char
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}
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p = (unsigned char *)(header+1);
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- extract_name(header, plen, &p, name, 1, 4);
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+ if (!extract_name(header, plen, &p, name, 1, 4))
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+ return STAT_BOGUS;
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+
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p += 4; /* qtype, qclass */
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/* If the key needed to validate the DS is on the same domain as the DS, we'll
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--
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2.31.1
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