Vulnerability identifier: #VU33831

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-2015-1031

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
privoxy
Server applications / Web servers

Vendor: privoxy

Description

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

Multiple use-after-free vulnerabilities in Privoxy before 3.0.22 allow remote attackers to have unspecified impact via vectors related to (1) the unmap function in list.c or (2) "two additional unconfirmed use-after-free complaints made by Coverity scan." NOTE: some of these details are obtained from third party information. <a href="http://cwe.mitre.org/data/definitions/416.html">CWE-416: Use After Free</a>

Mitigation
Install update from vendor's website.

Vulnerable software versions

privoxy: 3.0.21 - 3.0.28

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External links
http://secunia.com/advisories/62123
http://www.debian.org/security/2015/dsa-3133
http://www.openwall.com/lists/oss-security/2015/01/11/1
http://www.privoxy.org/announce.txt

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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.