SB2021100621 - SUSE update for glibc

Description

This security bulletin contains information about 2 secuirty vulnerabilities.

1) Use-after-free (CVE-ID: CVE-2021-33574)

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a use-after-free error in the mq_notify() function in the GNU C Library. A remote attacker can force the library to use the notification thread attributes object (passed through its struct sigevent parameter) after it has been freed by the caller, leading to a denial of service or possibly remote code execution.

Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.

2) Integer overflow (CVE-ID: CVE-2021-35942)

The vulnerability allows a remote attacker to gain access to sensitive information or perform a DoS attack.

The vulnerability exists due to integer overflow in parse_param in posix/wordexp.c in the GNU C Library when called with an untrusted pattern. A remote attacker can pass specially crafted data to the application, trigger integer overflow and read arbitrary memory on the system of perform a denial of service (DoS) attack.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Remediation

Install update from vendor's website.

References

• https://www.suse.com/support/update/announcement/2021/suse-su-20213289-1/