SB20230816279 - Multiple vulnerabilities in Meinberg LANTIME firmware (August 2023)
Published: August 16, 2023 Updated: May 18, 2025
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 12 secuirty vulnerabilities.
1) Stored cross-site scripting (CVE-ID: N/A)
The disclosed vulnerability allows a remote user to perform cross-site scripting (XSS) attacks.
The vulnerability exists due to insufficient sanitization of user-supplied data in the Log-file “lantime_messages“. A remote privileged user can permanently inject 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) Improper Verification of Cryptographic Signature (CVE-ID: N/A)
The vulnerability allows a remote attacker to compromise the affected system.
The vulnerability exists due to incorrectly implemented signature check of uploaded firmware image files. The check was not performed in time, which could lead to a malicious firmware image being used.
3) Resource management error (CVE-ID: CVE-2023-2650)
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 processing OCSP, PKCS7/SMIME, CMS, CMP/CRMF or TS subsystems with no message size limit. A remote attacker can send specially crafted data to the application and perform a denial of service (DoS) attack.
4) Buffer overflow (CVE-ID: CVE-2023-29491)
The vulnerability allows a local user to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error when processing malformed data in a terminfo database file. A local user can trigger memory corruption and execute arbitrary code on the target system.
5) Expected behavior violation (CVE-ID: CVE-2023-28322)
The vulnerability allows a remote attacker to gain access to sensitive information.
The vulnerability exists due to a logic error when sending HTTP POST and PUT requests using the same handle. The libcurl can erroneously use the read callback (CURLOPT_READFUNCTION) to ask for data to send, even when the CURLOPT_POSTFIELDS option has been set, if the same handle previously was used to issue a PUT request which used that callback. As a result, the application can misbehave and either send off the wrong data or use memory after free or similar in the second transfer.
6) Improper certificate validation (CVE-ID: CVE-2023-28321)
The vulnerability allows a remote attacker to perform MitM attack.
The vulnerability exists due to improper certificate validation when matching wildcards in TLS certificates for IDN names. A remote attacker crate a specially crafted certificate that will be considered trusted by the library.
Successful exploitation of the vulnerability requires that curl is built to use OpenSSL, Schannel or Gskit.
7) Improper synchronization (CVE-ID: CVE-2023-28320)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to improper synchronization when resolving host names using the alarm() and siglongjmp() function. A remote attacker can force the application to crash by influencing contents of the global buffer.
8) Use-after-free (CVE-ID: CVE-2023-28319)
The vulnerability allows a remote attacker to gain access to sensitive information.
The vulnerability exists due to a use-after-free error when checking the SSH sha256 fingerprint. A remote attacker can use the application to connect to a malicious SSH server, trigger a use-after-free error and gain access to potentially sensitive information.
Successful exploitation of the vulnerability requires usage of the the CURLOPT_SSH_HOST_PUBLIC_KEY_SHA256 option, and also CURLOPT_VERBOSE or CURLOPT_ERRORBUFFER options have to be set.
9) Input validation error (CVE-ID: CVE-2023-1667)
The vulnerability allows a remote attacker to bypass implemented security restrictions.
The vulnerability exists due to multiple errors in kex implementation, related to kex guessing algorithm. A remote attacker can bypass implemented security restrictions.
10) Improper Authentication (CVE-ID: CVE-2023-2283)
The vulnerability allows a remote attacker to bypass authentication process.
The vulnerability exists due to an error within the pki_verify_data_signature() function in pki_crypto.c. The pki_key_check_hash_compatible() function can return SSH_OK value if memory allocation error happens later in the function. The A remote attacker can bypass authentication process and gain unauthorized access to the system.
11) Inadequate Encryption Strength (CVE-ID: CVE-2023-0361)
The vulnerability allows a remote attacker to perform MitM attack.
The vulnerability exists due to an error in the TLS RSA key exchange. A remote attacker can perform Bleichenbacher oracle attack and decrypt information.
12) Input validation error (CVE-ID: N/A)
The vulnerability allows a remote user to perform spoofing attack.
The vulnerability exists due to an error when displaying users. User account with a name that consists of parts of a system username is not displayed in the web interface, which can allow creation of persisted hidden user accounts.
Remediation
Install update from vendor's website.