Vulnerability identifier: #VU25017
Vulnerability risk: Medium
CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-20
Exploitation vector: Network
Exploit availability: No
Vulnerable software:
Squid
Server applications /
IDS/IPS systems, Firewalls and proxy servers
Vendor: Squid-cache.org
Description
The vulnerability allows a remote attacker to gain access to sensitive information.
The vulnerability exists due to insufficient validation of user-supplied input when processing HTTP requests. A remote attacker can send a specially crafted HTTP request, bypass configured security filters and gain access to certain server resources.
Mitigation
Install updates from vendor's website.
Vulnerable software versions
Squid: 4.0.1 - 4.9, 3.0 - 3.5.28, 2.7 RC2 - 2.7.STABLE9, 2.4 - 2.4_stable_3, 2.5.6 - 2.5_stable9, 2.3.devel2 - 2.3_stable5, 2.1.patch1 - 2.1_patch2, 2.0.patch1 - 2.0_patch2, 2.2.devel3 - 2.2.stable5, 2.6.stable1 - 2.6.stable6
External links
http://www.squid-cache.org/Advisories/SQUID-2020_1.txt
http://www.squid-cache.org/Versions/v3/3.5/changesets/SQUID-2020_1.patch
http://www.squid-cache.org/Versions/v3/3.5/changesets/squid-3.5-8e657e835965c3a011375feaa0359921c5b3e2dd.patch
http://www.squid-cache.org/Versions/v4/changesets/SQUID-2020_1.patch
http://www.squid-cache.org/Versions/v4/changesets/squid-4-b3a0719affab099c684f1cd62b79ab02816fa962.patch
http://www.squid-cache.org/Versions/v4/changesets/squid-4-d8e4715992d0e530871519549add5519cbac0598.patch
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.