SB2023012494 - Meinberg LANTIME firmware update for third-party components (January 2023)

Description

This security bulletin contains information about 8 secuirty vulnerabilities.

1) Double Free (CVE-ID: CVE-2022-42915)

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

The vulnerability exists due to a boundary error when processing non-200 proxy HTTP responses for the following schemes: dict, gopher, gophers, ldap, ldaps, rtmp, rtmps, telnet. A remote attacker can trigger a double free error by forcing the application into connecting to resources that are not allowed by the configured proxy.

2) Cleartext transmission of sensitive information (CVE-ID: CVE-2022-42916)

The vulnerability allows a remote attacker to gain access to sensitive information.

The vulnerability exists due to an error when parsing URL with IDN characters that get replaced to ASCII counterparts as part of the IDN conversion. A remote attacker can bypass curl's HSTS check and trick it into using unencrypted HTTP protocol.

3) Input validation error (CVE-ID: CVE-2022-35252)

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

The vulnerability exists due to the way curl handles cookies with control codes (byte values below 32). When cookies that contain such control codes are later sent back to an HTTP(S) server, it might make the server return a 400 response, effectively allowing a "sister site" to deny service to siblings.

4) Stack-based buffer overflow (CVE-ID: CVE-2022-35260)

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a boundary error when parsing .netrc file. A local user can pass a specially crafted file to the curl, trigger a stack-based buffer overflow and perform a denial of service (DoS) attack.

5) Out-of-bounds write (CVE-ID: CVE-2022-43995)

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a boundary condition within plugins/sudoers/auth/passwd.c when Sudo is configured to use the crypt() password backend (e.g. when passwd authentication is enabled). A local user with access to Sudo  can enter a password of 8 characters or fewer to trigger a heap-based buffer over-read and gain access to sensitive information.

6) Use-after-free (CVE-ID: CVE-2022-42012)

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a use-after-free error caused by a message in non-native endianness with out-of-band Unix file descriptors. A local user can trigger a use-after-free error and execute arbitrary code with elevated privileges.

7) Out-of-bounds read (CVE-ID: CVE-2022-42011)

The vulnerability allows a local user to gain access to potentially sensitive information or perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary error caused by an invalid array of fixed-length elements where the length of the array is not a multiple of the length of the element. A local user can trigger an out-of-bounds read and gain access to sensitive information.

8) Reachable Assertion (CVE-ID: CVE-2022-42010)

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to a reachable assertion in debug builds caused by a syntactically invalid type signature with incorrectly nested parentheses and curly brackets. A local user can perform a denial of service (DoS) attack.

Remediation

Install update from vendor's website.

References

• https://www.meinbergglobal.com/english/news/meinberg-security-advisory-mbgsa-2023-01-meinberg-lantime-firmware-v7-06-009-and-v6-24-035.htm