Use-after-free in nginx - CVE-2016-0746
Published: September 21, 2021
Vulnerability identifier: #VU56736
CSH Severity: High
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2016-0746
CWE-ID: CWE-416
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: F5 Networks
Affected software:
nginx
nginx
Detailed vulnerability description
The vulnerability allows a remote attacker to compromise vulnerable system.
The vulnerability exists due to a use-after-free error when processing a crafted DNS response related to CNAME response processing within the resolver in nginx. A remote attacker can send a specially crafted DNS response to the affected server, trigger a use-after-free error and perform a denial of service attack or execute arbitrary code on the system.
Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.
How to mitigate CVE-2016-0746
Install updates from vendor's website.
Sources
- http://lists.opensuse.org/opensuse-updates/2016-02/msg00042.html
- http://mailman.nginx.org/pipermail/nginx/2016-January/049700.html
- http://www.debian.org/security/2016/dsa-3473
- http://www.securitytracker.com/id/1034869
- http://www.ubuntu.com/usn/USN-2892-1
- https://access.redhat.com/errata/RHSA-2016:1425
- https://bto.bluecoat.com/security-advisory/sa115
- https://bugzilla.redhat.com/show_bug.cgi?id=1302588
- https://security.gentoo.org/glsa/201606-06