Vulnerability identifier: #VU45096

Vulnerability 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-2011-1843

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
tinyproxy
Other software / Other software solutions

Vendor: tinyproxy

Description

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

Integer overflow in conf.c in Tinyproxy before 1.8.3 might allow remote attackers to bypass intended access restrictions in opportunistic circumstances via a TCP connection, related to improper handling of invalid port numbers.

Mitigation
Install update from vendor's website.

Vulnerable software versions

tinyproxy: 1.5.0 - 1.8.1

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External links
http://www.securityfocus.com/bid/47715
http://banu.com/bugzilla/show_bug.cgi?id=90
http://banu.com/cgit/tinyproxy/diff/?id=97b9984484299b2ce72f8f4fc3706dab8a3a8439

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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.