CentOS 7 update for bind

Published: 2022-10-26

Risk	Medium
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2022-38177 CVE-2022-38178
CWE-ID	CWE-401
Exploitation vector	Network
Public exploit	N/A
Vulnerable software	CentOS Operating systems & Components / Operating system
Vendor	CentOS Project

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Memory leak

EUVDB-ID: #VU67549

Risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2022-38177

CWE-ID: CWE-401 - Missing release of memory after effective lifetime

Exploit availability: No

Description

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.

Mitigation

Update the affected packages.

Vulnerable software versions

CentOS: 7

CPE2.3

cpe:2.3:o:centos_project:centos:7:*:*:*:*:*:*:*

External links

https://lists.centos.org/pipermail/centos-announce/2022-October/073648.html

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Memory leak

EUVDB-ID: #VU67550