SB2024071173 - Debian update for squid
Published: July 11, 2024
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 12 secuirty vulnerabilities.
1) Improper Certificate Validation (CVE-ID: CVE-2023-46724)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to improper input validation when processing a specially crafted SSL Certificate in a server certificate chain. A remote attacker can initiate a TLS Handshake with a specially crafted SSL certificate and perform a denial of service (DoS) attack.
2) Buffer overflow (CVE-ID: CVE-2023-46724)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a boundary error when handling gopher responses. A remote attacker can trick the victim into connecting to a malicious gopher server, trigger a buffer overflow and crash the proxy server.
3) Inconsistent interpretation of HTTP requests (CVE-ID: CVE-2023-46846)
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.
4) Buffer overflow (CVE-ID: CVE-2023-46847)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a boundary error in HTTP Digest Authentication. A remote attacker can trigger memory corruption and cause a denial of service condition on the target system.
5) Out-of-bounds read (CVE-ID: CVE-2023-49285)
The vulnerability allows a remote attacker perform a denial of service (DoS) attack.
The vulnerability exists due to a boundary condition when handling HTTP messages. A remote attacker can send specially crafted data to the server, trigger an out-of-bounds read error and crash the proxy server.
6) Unchecked Return Value (CVE-ID: CVE-2023-49286)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to incorrect check of function return value in Helper process management. A remote attacker can pass specially crafted data to the proxy server and perform a denial of service (DoS) attack.
7) Uncontrolled Recursion (CVE-ID: CVE-2023-50269)
The vulnerability allows a remote client to perform a denial of service (DoS) attack.
The vulnerability exists due to uncontrolled recursion when parsing HTTP requests. A remote client can send a specially crafted HTTP request with the a large X-Forwarded-For header, when the follow_x_forwarded_for feature is configured, and perform a denial of service (DoS) attack.
8) Expired pointer dereference (CVE-ID: CVE-2024-23638)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to an expired pointer dereference in the Cache Manager when handling error responses. A remote attacker can perform a denial of service (DoS) attack.
9) Input validation error (CVE-ID: CVE-2024-25617)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to insufficient validation of HTTP headers. A remote attacker can send a specially crafted HTTP request to the server and perform a denial of service (DoS) attack.
Successful exploitation of the vulnerability requires that the request_header_max_size or reply_header_max_size settings are
unchanged from the default.
10) Input validation error (CVE-ID: CVE-2023-46848)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to insufficient validation of user-supplied input. A remote attacker can send ftp:// URLs in HTTP Request messages or construct ftp:// URLs from FTP Native input and crash the proxy server.
11) Uncontrolled recursion (CVE-ID: CVE-2024-25111)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to an uncontrolled recursion within the HTTP Chunked decoder when handling HTTP requests. A remote attacker can send a specially crafted chunked encoded HTTP Message to the proxy server and perform a denial of service (DoS) attack.
12) NULL pointer dereference (CVE-ID: CVE-2023-46728)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a NULL pointer dereference error in Gopher gateway. A remote attacker can pass specially crafted data to the server and perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.