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SUSE:SLE-12-SP4:GA
bind.26110
bind-CVE-2020-8617.patch
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File bind-CVE-2020-8617.patch of Package bind.26110
Index: bind-9.6-ESV-R11-W1/lib/dns/tsig.c =================================================================== --- bind-9.6-ESV-R11-W1.orig/lib/dns/tsig.c +++ bind-9.6-ESV-R11-W1/lib/dns/tsig.c @@ -1255,8 +1255,9 @@ dns_tsig_verify(isc_buffer_t *source, dn } else if (ret != ISC_R_SUCCESS) { goto cleanup_context; } - } else if (tsig.error != dns_tsigerror_badsig && - tsig.error != dns_tsigerror_badkey) { + } else if (!response || (tsig.error != dns_tsigerror_badsig && + tsig.error != dns_tsigerror_badkey)) + { tsig_log(msg->tsigkey, 2, "signature was empty"); return (DNS_R_TSIGVERIFYFAILURE); } @@ -1322,7 +1323,7 @@ dns_tsig_verify(isc_buffer_t *source, dn } } - if (tsig.error != dns_rcode_noerror) { + if (response && tsig.error != dns_rcode_noerror) { msg->tsigstatus = tsig.error; if (tsig.error == dns_tsigerror_badtime) ret = DNS_R_CLOCKSKEW;
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