SB2022101449 - openEuler 20.03 LTS SP1 update for bind
Published: October 14, 2022
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 5 secuirty vulnerabilities.
1) Memory leak (CVE-ID: CVE-2022-38177)
The vulnerability allows a remote attacker to perform DoS attack on the target system.
The vulnerability exists due memory leak in the DNSSEC verification code for the ECDSA algorithm. A remote attacker can spoof the target resolver with responses that have a malformed ECDSA signature and perform denial of service attack.
2) Memory leak (CVE-ID: CVE-2022-38178)
The vulnerability allows a remote attacker to perform DoS attack on the target system.
The vulnerability exists due memory leak in the DNSSEC verification code for the EdDSA algorithm. A remote attacker can spoof the target resolver with responses that have a malformed EdDSA signature and perform denial of service attack.
3) Resource management error (CVE-ID: CVE-2022-2795)
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 large delegations. A remote attacker can flood the target resolver with queries and perform a denial of service (DoS) attack.
4) Out-of-bounds read (CVE-ID: CVE-2022-2881)
The vulnerability allows a remote attacker to gain access to potentially sensitive information or perform a denial of service (DoS) attack.
The vulnerability exists due to a boundary condition when reusing HTTP connection while requesting statistics from the stats channel. A remote DNS server under attacker's control trigger an out-of-bounds read error and read contents of memory on the system or perform a denial of service attack.
5) Memory leak (CVE-ID: CVE-2022-2906)
The vulnerability allows a remote attacker to perform DoS attack on the target system.
The vulnerability exists due memory leak in key processing when using TKEY records in Diffie-Hellman mode with OpenSSL 3.0.0 and later versions. A remote attacker can force the application to leak memory and perform denial of service attack.
Remediation
Install update from vendor's website.