CVE-2017-3137

Summary

Mistaken assumptions about the ordering of records in the answer section of a response containing CNAME or DNAME resource records could lead to a situation in which named would exit with an assertion failure when processing a response in which records occurred in an unusual order. Affects BIND 9.9.9-P6, 9.9.10b1->9.9.10rc1, 9.10.4-P6, 9.10.5b1->9.10.5rc1, 9.11.0-P3, 9.11.1b1->9.11.1rc1, and 9.9.9-S8.

Affected Software

VendorProductVersion RangeStatus
ISCBIND 99.9.9-P6, 9.9.10b1->9.9.10rc1, 9.10.4-P6, 9.10.5b1->9.10.5rc1, 9.11.0-P3, 9.11.1b1->9.11.1rc1, and 9.9.9-S8affected

Weaknesses

  • A server which is performing recursion can be forced to exit with an assertion failure if it can be caused to receive a response containing CNAME or DNAME resource records with certain ordering. An attacker can cause a denial of service by exploiting this condition. Recursive resolvers are at highest risk but authoritative servers are theoretically vulnerable if they perform recursion.

Workarounds

None known.

ADP Enrichment

CVE Program Container

Additional References

References