Ubuntu update for tinyproxy

1) Use-after-free

EUVDB-ID: #VU89115

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-2023-49606

CWE-ID: CWE-416 - Use After Free

Exploit availability: Yes

Description

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a use-after-free error in the HTTP Connection Headers parsing. A remote attacker can send a specially crafted HTTP header and execute arbitrary code on the target system.

Mitigation

Update the affected package tinyproxy to the latest version.

Vulnerable software versions

Ubuntu: 14.04 - 24.04

tinyproxy-bin (Ubuntu package): before 1.10.0-4ubuntu0.2

tinyproxy (Ubuntu package): before 1.10.0-4ubuntu0.2

CPE2.3

• cpe:2.3:o:canonical:ubuntu:14.04:*:*:*:*:*:*:*
• cpe:2.3:o:canonical:ubuntu:16.04:*:*:*:*:*:*:*
• cpe:2.3:o:canonical:ubuntu:18.04:*:*:*:*:*:*:*
• cpe:2.3:o:canonical:ubuntu:20.04:*:*:*:*:*:*:*
• cpe:2.3:o:canonical:ubuntu:22.04:*:*:*:*:*:*:*
• cpe:2.3:o:canonical:ubuntu:24.04:*:*:*:*:*:*:*
• cpe:2.3:a:canonical:tinyproxy-bin_ubuntu_package:*:*:*:*:*:ubuntu:*:*
• cpe:2.3:a:canonical:tinyproxy_ubuntu_package:*:*:*:*:*:ubuntu:*:*

External links

https://ubuntu.com/security/notices/USN-7190-1

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.