SB2023122144 - Multiple vulnerabilities in Red Hat Single Sign-On 7.6
Published: December 21, 2023
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 13 secuirty vulnerabilities.
1) Cross-site scripting (CVE-ID: CVE-2023-6134)
The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.
The vulnerability exists due to insufficient sanitization of user-supplied data within wildcard in OIDC redirect_uri. A remote attacker can trick the victim to follow a specially crafted link and execute arbitrary HTML and script code in user's browser in context of vulnerable website.
Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.
2) Open redirect (CVE-ID: CVE-2023-6291)
The vulnerability allows a remote attacker to redirect victims to arbitrary URL.
The vulnerability exists due to improper sanitization of user-supplied data in the verifyRedirectUri method. A remote attacker can create a link that leads to a trusted website, however, when clicked, redirects the victim to arbitrary domain.
Successful exploitation of this vulnerability may allow a remote attacker to perform a phishing attack and steal potentially sensitive information.
3) Resource exhaustion (CVE-ID: CVE-2023-6563)
The vulnerability allows a remote user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper control over internal resources in environments which have millions of offline tokens (> 500,000 users with each having at least 2 saved sessions). A remote user can create two or more user sessions and then open the "consents" tab of the admin User Interface, the UI attempts to load a huge number of offline client sessions leading to excessive memory and CPU consumption which could potentially crash the entire system.
4) Path traversal (CVE-ID: CVE-2007-4559)
The vulnerability allows a remote attacker to compromise the affected system.
The
vulnerability exists due to improper validation of filenames in the
tarfile module in Python. A remote attacker can
create a specially crafted archive with symbolic links inside or
filenames that contain directory traversal characters (e.g. "..") and
overwrite arbitrary files on the system.
5) Resource exhaustion (CVE-ID: CVE-2022-3094)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to application does not properly control consumption of internal resources when handling DNS updates. A remote attacker can trigger resource exhaustion by sending a flood of dynamic DNS updates.
6) Integer overflow (CVE-ID: CVE-2022-48468)
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to integer overflow within parse_required_member() function. A remote attacker can pass specially crafted data to the application, trigger integer overflow and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
7) Input validation error (CVE-ID: CVE-2023-1981)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to insufficient validation of user-supplied input. A local user can initiate a DBUS call to the daemon and perform a denial of service (DoS) attack.
8) Out-of-bounds write (CVE-ID: CVE-2023-3138)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a boundary error within src/InitExt.c in libX11. A remote attacker can send specially crafted data to the server, trigger an out-of-bounds write and perform a denial of service (DoS) attack.
9) Out-of-bounds write (CVE-ID: CVE-2023-4016)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a boundary error when processing untrusted input. A local user can trigger an out-of-bounds write and execute arbitrary code with elevated privileges.
10) Information disclosure (CVE-ID: CVE-2023-4641)
The vulnerability allows a local user to gain access to potentially sensitive information.
The vulnerability exists due to an error in gpasswd(1), which fails to clean memory properly. When asking for a new password, shadow-utils asks the password twice. If the password fails on the second attempt, shadow-utils fails in cleaning the buffer used to store the first entry. A local user with enough access can retrieve the password from the memory.
11) Improper Certificate Validation (CVE-ID: CVE-2023-31486)
The vulnerability allows a remote attacker to perform MitM attack.
The vulnerability exists due to missing verification of the TLS certificate. A remote attacker can perform MitM attack and trick the application into downloading a malicious file.12) Heap-based buffer overflow (CVE-ID: CVE-2023-32324)
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error within the format_log_line() function cups/string.c when the "loglevel" is set to "DEBUG". A remote attacker can pass specially crafted data to the daemon, trigger a heap-based buffer overflow and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
13) Use-after-free (CVE-ID: CVE-2023-34241)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a use-after-free error in cupsdAcceptClient(). A remote attacker can cause a denial of service condition on the target system.
Remediation
Install update from vendor's website.