CVE-2017-9109

Description

An issue was discovered in adns before 1.5.2. It fails to ignore apparent answers before the first RR that was found the first time. when this is fixed, the second answer scan finds the same RRs at the first. Otherwise, adns can be confused by interleaving answers for the CNAME target, with the CNAME itself. In that case the answer data structure (on the heap) can be overrun. With this fixed, it prefers to look only at the answer RRs which come after the CNAME, which is at least arguably correct.

References

https://www.chiark.greenend.org.uk/pipermail/adns-announce/2020/000004.html

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UGFZ4SPV6KFQK6ZNUZFB5Y32OYFOM5YJ/

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TRVHN3GGVNQWAOL3PWC5FLAV7HUESLZR/

http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=adns.git%3Ba=blob%3Bf=changelog

http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=adns.git

http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00037.html

Details

Source: Mitre, NVD

Risk Information

CVSS v2

CVSS v3