Code Injection in libproxy

1) Code Injection

EUVDB-ID: #VU41192

Risk: Medium

CVSSv3.1: 6.4 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2012-5580

CWE-ID: CWE-94 - Improper Control of Generation of Code ('Code Injection')

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to read and manipulate data.

Format string vulnerability in the print_proxies function in bin/proxy.c in libproxy 0.3.1 might allow context-dependent attackers to cause a denial of service (crash) and possibly execute arbitrary code via format string specifiers in a proxy name, as demonstrated using the http_proxy environment variable or a PAC file.

Mitigation

Install update from vendor's website.

Vulnerable software versions

libproxy: 0.3.1

External links

http://www.securityfocus.com/bid/56712
http://bugzilla.novell.com/show_bug.cgi?id=791086
http://bugzilla.redhat.com/show_bug.cgi?id=883100
http://code.google.com/p/libproxy/source/detail?r=475
http://exchange.xforce.ibmcloud.com/vulnerabilities/80340

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.