Use-after-free vulnerability in the resolver in nginx 0.6.18 through 1.8.0 and 1.9.x before 1.9.10 allows remote attackers to cause a denial of service (worker process crash) or possibly have unspecified other impact via a crafted DNS response related to CNAME response processing.
The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.
| Link | Tags |
|---|---|
| http://lists.opensuse.org/opensuse-updates/2016-02/msg00042.html | mailing list third party advisory vendor advisory |
| https://bto.bluecoat.com/security-advisory/sa115 | third party advisory |
| https://security.gentoo.org/glsa/201606-06 | third party advisory vendor advisory |
| http://www.securitytracker.com/id/1034869 | vdb entry third party advisory |
| http://mailman.nginx.org/pipermail/nginx/2016-January/049700.html | mailing list vendor advisory |
| https://access.redhat.com/errata/RHSA-2016:1425 | third party advisory vendor advisory |
| http://www.debian.org/security/2016/dsa-3473 | third party advisory vendor advisory |
| http://www.ubuntu.com/usn/USN-2892-1 | third party advisory vendor advisory |
| https://bugzilla.redhat.com/show_bug.cgi?id=1302588 | issue tracking third party advisory patch |
| https://support.apple.com/kb/HT212818 | third party advisory |
| http://seclists.org/fulldisclosure/2021/Sep/36 | third party advisory mailing list |