SB2024041718 - Multiple vulnerabilities in Oracle Communications Cloud Native Core Network Repository Function

Description

This security bulletin contains information about 7 secuirty vulnerabilities.

1) Inefficient regular expression complexity (CVE-ID: CVE-2022-40896)

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient input validation when processing untrusted input with a regular expressions in pygments/lexers/smithy.py. A remote attacker can pass specially crafted data to the application and perform regular expression denial of service (ReDos) attack.

2) Inadequate encryption strength (CVE-ID: CVE-2023-48795)

The vulnerability allows a remote attacker to perform MitM attack.

The vulnerability exists due to incorrect implementation of the SSH Binary Packet Protocol (BPP), which mishandles the handshake phase and the use of sequence numbers. A remote attacker can perform MitM attack and delete the SSH2_MSG_EXT_INFO message sent before authentication starts, allowing the attacker to disable a subset of the keystroke timing obfuscation features introduced in OpenSSH 9.5.

The vulnerability was dubbed "Terrapin attack" and it affects both client and server implementations.

3) Resource exhaustion (CVE-ID: CVE-2024-1635)

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 rapidly open and closed HTTP connections. A remote attacker can trigger resource exhaustion and perform a denial of service (DoS) attack.

4) Resource exhaustion (CVE-ID: CVE-2023-44487)

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to improperly control of consumption for internal resources when handling HTTP/2 requests with compressed HEADERS frames. A remote attacker can send a sequence of compressed HEADERS frames followed by RST_STREAM frames and perform a denial of service (DoS) attack, a.k.a. "Rapid Reset".

Note, the vulnerability is being actively exploited in the wild.

5) NULL pointer dereference (CVE-ID: CVE-2023-49083)

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 calling the load_pem_pkcs7_certificates() or load_der_pkcs7_certificates() functions. A remote attacker can pass specially crafted PKCS7 blob/certificate certificate to the application and perform a denial of service (DoS) attack.

6) Heap-based buffer overflow (CVE-ID: CVE-2023-41056)

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error when resizing memory buffers. A remote attacker can pass specially crafted data to the application, 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.

7) Improper input validation (CVE-ID: CVE-2023-47100)

The vulnerability allows a remote non-authenticated attacker to execute arbitrary code.

The vulnerability exists due to improper input validation within the Platform (Perl) component in Oracle Communications Billing and Revenue Management. A remote non-authenticated attacker can exploit this vulnerability to execute arbitrary code.

Remediation

Install update from vendor's website.

References

• https://www.oracle.com/security-alerts/cpuapr2024.html?947626