#VU79735 Buffer overflow in tinyproxy - CVE-2001-0129

Vulnerability identifier: #VU79735

Vulnerability risk: High

CVSSv4.0: 8.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/U:Amber]

CVE-ID: CVE-2001-0129

CWE-ID: CWE-119

Exploitation vector: Network

Exploit availability: Yes

Vulnerable software:
tinyproxy
Other software / Other software solutions

Vendor: tinyproxy

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error when processing CONNECT requests. A remote attacker can send an overly long CONNECT request to the server, trigger memory corruption and execute arbitrary code on the target system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

tinyproxy: 1.3.0 - 1.3.3

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External links
https://marc.info/?l=bugtraq&m=97975486527750&w=2
https://www.debian.org/security/2001/dsa-018
https://www.securityfocus.com/bid/2217
https://exchange.xforce.ibmcloud.com/vulnerabilities/5954

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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. However, proof of concept for this vulnerability is available.