Vulnerability identifier: #VU32345

Vulnerability risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2016-1982

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 perform a denial of service (DoS) attack.

The remove_chunked_transfer_coding function in filters.c in Privoxy before 3.0.24 allows remote attackers to cause a denial of service (invalid read and crash) via crafted chunk-encoded content.

Mitigation
Install update from vendor's website.

Vulnerable software versions

privoxy: 3.0.21 - 3.0.23

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External links
http://lists.fedoraproject.org/pipermail/package-announce/2016-February/176475.html
http://lists.fedoraproject.org/pipermail/package-announce/2016-February/176492.html
http://www.debian.org/security/2016/dsa-3460
http://www.openwall.com/lists/oss-security/2016/01/21/4
http://www.openwall.com/lists/oss-security/2016/01/22/3
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.