SB2025071806 - Multiple vulnerabilities in IBM i
Published: July 18, 2025 Updated: November 28, 2025
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 12 secuirty vulnerabilities.
1) Type Confusion (CVE-ID: CVE-2024-6119)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a type confusion error when performing certificate name checks. A remote attacker can supply a specially crafted X.509 certificate to the server, trigger a type confusion error and perform a denial of service (DoS) attack.
2) Use-after-free (CVE-ID: CVE-2024-4741)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a use-after-free error within the SSL_free_buffers() function. A remote attacker can trigger a use-after-free error and perform a denial of service (DoS) attack.
Note, the vulnerability affects only applications that call the vulnerable function.
3) Covert Timing Channel (CVE-ID: CVE-2024-13176)
The vulnerability allows a remote attacker to recover a private key.
The vulnerability exists due to a timing side-channel in ECDSA signature computations. A remote attacker can recover the private key and decrypt data.
Successful exploitation of the vulnerability requires that the attacker's process must either be located in the same physical computer or must have a very fast network connection with low latency.
4) Cryptographic issues (CVE-ID: CVE-2023-5363)
The vulnerability allows a remote attacker to gain access to sensitive information.
The vulnerability exists due to an error when processing key and initialisation vector lengths in EVP_EncryptInit_ex2(), EVP_DecryptInit_ex2() and EVP_CipherInit_ex2() function. A remote attacker can gain access to potentially sensitive information.
The following ciphers and cipher modes are impacted: RC2, RC4, RC5, CCM, GCM and OCB.
5) Resource management error (CVE-ID: CVE-2024-4603)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to improper management of internal resources within the application when checking DSA keys and parameters. A remote attacker can pass specially crafted data to the application and perform a denial of service (DoS) attack.
6) Resource exhaustion (CVE-ID: CVE-2024-2511)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to unbounded memory growth when processing TLSv1.3 sessions. A remote attacker can trigger resource exhaustion and perform a denial of service (DoS) attack.
Successful exploitation of the vulnerability requires that the non-default SSL_OP_NO_TICKET option is being used in TLSv1.3.
7) Resource management error (CVE-ID: CVE-2023-6237)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to the way the EVP_PKEY_public_check() function handles RSA public keys. A remote attacker can supply an RSA key obtained from an untrusted source and perform a denial of service (DoS) attack.
8) State Issues (CVE-ID: CVE-2023-6129)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to an error in POLY1305 MAC (message authentication code) implementation on PowerPC CPU based platforms if the CPU provides vector instructions. A remote attacker can perform a denial of service (DoS) attack.
9) NULL pointer dereference (CVE-ID: CVE-2024-0727)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a NULL pointer dereference error when processing fields in the PKCS12 certificate. A remote attacker can pass specially crafted certificate to the server and perform a denial of service (DoS) attack.
10) Out-of-bounds read (CVE-ID: CVE-2024-5535)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a boundary condition within the SSL_select_next_proto() function when using NPN. A remote attacker can send specially crafted data to the application, trigger an out-of-bounds read and perform a denial of service (DoS) attack.
11) Resource management error (CVE-ID: CVE-2023-5678)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to improper management of internal resources within DH_generate_key() and DH_check_pub_key() functions. A remote attacker can pass specially crafted data to the application and perform a denial of service (DoS) attack.
12) Out-of-bounds write (CVE-ID: CVE-2024-9143)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a boundary error when using the low-level GF(2^m) elliptic curve APIs with untrusted explicit values for the field polynomial. A remote attacker can send specially crafted input to the server, trigger an out-of-bounds write and perform a denial of service (DoS) attack.
Note, the vulnerability can be exploited against the application in rare cases only that involve "exotic" curve encoding.
Remediation
Install update from vendor's website.