cbcvebase.
CVE-2012-1667
published 2012-06-05

CVE-2012-1667: ISC BIND 9.x before 9.7.6-P1, 9.8.x before 9.8.3-P1, 9.9.x before 9.9.1-P1, and 9.4-ESV and 9.6-ESV before 9.6-ESV-R7-P1 does not properly handle resource…

PriorityP348high8.5CVSS 2.0
AVNACLAuNCPINAC
EPSS
13.41%
96.0th percentile
ISC BIND 9.x before 9.7.6-P1, 9.8.x before 9.8.3-P1, 9.9.x before 9.9.1-P1, and 9.4-ESV and 9.6-ESV before 9.6-ESV-R7-P1 does not properly handle resource records with a zero-length RDATA section, which allows remote DNS servers to cause a denial of service (daemon crash or data corruption) or obtain sensitive information from process memory via a crafted record.

Affected

59 ranges· showing 25
VendorProductVersion rangeFixed in
debianbind9< bind9 1:9.8.1.dfsg.P1-4.1 (bookworm)bind9 1:9.8.1.dfsg.P1-4.1 (bookworm)
debianisc-dhcp< bind9 1:9.8.1.dfsg.P1-4.1 (bookworm)bind9 1:9.8.1.dfsg.P1-4.1 (bookworm)
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Detection & IOCsextracted from sources · hover to see the quote

  • Target process is named(8) (ISC BIND DNS daemon); look for unexpected termination or crash of the named process following receipt of crafted DNS resource records with zero-length RDATA fields.
  • Monitor named for memory disclosure to DNS clients — resolving servers may leak portions of process memory in responses when processing zero-length RDATA records.
  • Authoritative servers are at risk of crash on zone transfer restart; monitor for named crashes following AXFR/IXFR zone transfers that may have introduced zero-length RDATA records.
  • This vulnerability primarily affects recursive resolvers; prioritize monitoring of recursive BIND instances for anomalous crashes or unexpected data in DNS responses.
  • The flaw may also result in zone data corruption in certain configurations; monitor zone files and zone transfer logs for data integrity anomalies.
  • ·No workaround is available for this vulnerability; the only mitigation is patching to a fixed BIND version (9.6-ESV-R7-P1, 9.7.6-P1, 9.8.3-P1, or 9.9.1-P1). Systems not running BIND named are unaffected.
  • ·All supported BIND 9.x branches are affected: 9.x before 9.7.6-P1, 9.8.x before 9.8.3-P1, 9.9.x before 9.9.1-P1, and 9.4-ESV / 9.6-ESV before 9.6-ESV-R7-P1.

CVSS provenance

nvdv2.08.5HIGHAV:N/AC:L/Au:N/C:P/I:N/A:C
osv8.5HIGH
vendor_debian8.5HIGH
vendor_redhat8.5HIGH
vendor_ubuntu5.0MEDIUM
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