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SUSE:SLE-12-SP1:Update
bind.24015
bind-CVE-2021-25214.patch
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File bind-CVE-2021-25214.patch of Package bind.24015
Index: bind-9.9.9-P1/lib/dns/xfrin.c =================================================================== --- bind-9.9.9-P1.orig/lib/dns/xfrin.c +++ bind-9.9.9-P1/lib/dns/xfrin.c @@ -478,6 +478,19 @@ xfr_rr(dns_xfrin_ctx_t *xfr, dns_name_t if (rdata->type == dns_rdatatype_none || dns_rdatatype_ismeta(rdata->type)) FAIL(DNS_R_FORMERR); + /* + * Immediately reject the entire transfer if the RR that is currently + * being processed is an SOA record that is not placed at the zone + * apex. + */ + if (rdata->type == dns_rdatatype_soa && + !dns_name_equal(&xfr->name, name)) { + char namebuf[DNS_NAME_FORMATSIZE]; + dns_name_format(name, namebuf, sizeof(namebuf)); + xfrin_log(xfr, ISC_LOG_DEBUG(3), "SOA name mismatch: '%s'", + namebuf); + FAIL(DNS_R_NOTZONETOP); + } redo: switch (xfr->state) {
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