#VU32679 Permissions, Privileges, and Access Controls in nginx - CVE-2013-2070

Vulnerability identifier: #VU32679

Vulnerability risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2013-2070

CWE-ID: CWE-264

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
nginx
Server applications / Web servers

Vendor: NGINX

Description

The vulnerability allows a remote non-authenticated attacker to #BASIC_IMPACT#.

http/modules/ngx_http_proxy_module.c in nginx 1.1.4 through 1.2.8 and 1.3.0 through 1.4.0, when proxy_pass is used with untrusted HTTP servers, allows remote attackers to cause a denial of service (crash) and obtain sensitive information from worker process memory via a crafted proxy response, a similar vulnerability to CVE-2013-2028.

Mitigation
Install update from vendor's website.

Vulnerable software versions

nginx: 1.1.4, 1.2.8

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External links
https://lists.fedoraproject.org/pipermail/package-announce/2013-May/105950.html
https://mailman.nginx.org/pipermail/nginx-announce/2013/000114.html
https://nginx.org/download/patch.2013.proxy.txt
https://seclists.org/oss-sec/2013/q2/291
https://secunia.com/advisories/55181
https://security.gentoo.org/glsa/glsa-201310-04.xml
https://www.debian.org/security/2013/dsa-2721
https://www.openwall.com/lists/oss-security/2013/05/13/3
https://www.securityfocus.com/bid/59824
https://bugzilla.redhat.com/show_bug.cgi?id=962525
https://exchange.xforce.ibmcloud.com/vulnerabilities/84172

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.