Amazon Linux AMI update for squid

1) Inconsistent interpretation of HTTP requests

EUVDB-ID: #VU82315

Risk: Medium

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

CVE-ID: CVE-2023-46846

CWE-ID: CWE-444 - Inconsistent Interpretation of HTTP Requests ('HTTP Request Smuggling')

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform HTTP request smuggling attacks.

The vulnerability exists due to improper validation of HTTP requests when parsing HTTP/1.1 and ICAP messages. A remote attacker can send a specially crafted HTTP request to the server and smuggle arbitrary HTTP headers.

Successful exploitation of vulnerability may allow an attacker to poison HTTP cache and perform phishing attacks.

Mitigation

Update the affected packages:

i686:
    squid-3.5.20-17.55.amzn1.i686
    squid-migration-script-3.5.20-17.55.amzn1.i686
    squid-debuginfo-3.5.20-17.55.amzn1.i686

src:
    squid-3.5.20-17.55.amzn1.src

x86_64:
    squid-debuginfo-3.5.20-17.55.amzn1.x86_64
    squid-3.5.20-17.55.amzn1.x86_64
    squid-migration-script-3.5.20-17.55.amzn1.x86_64

Vulnerable software versions

Amazon Linux AMI: All versions

squid: before 3.5.20-17.55

CPE2.3

• cpe:2.3:o:amazon_web_services:amazon_linux_ami:*:*:*:*:*:*:*:*
• cpe:2.3:o:amazon_web_services:squid:*:*:*:*:*:amazon_linux_ami:*:*

External links

http://alas.aws.amazon.com/ALAS-2024-1933.html

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.