SUSE update for bind

Published: 2021-11-23

Risk	Medium
Patch available	YES
Number of vulnerabilities	1
CVE-ID	CVE-2021-25219
CWE-ID	CWE-400
Exploitation vector	Network
Public exploit	N/A
Vulnerable software Subscribe	SUSE Linux Enterprise Module for Server Applications Operating systems & Components / Operating system SUSE Linux Enterprise Module for Basesystem Operating systems & Components / Operating system python3-bind Operating systems & Components / Operating system package or component libns1604-debuginfo Operating systems & Components / Operating system package or component libns1604 Operating systems & Components / Operating system package or component libisccfg1600-debuginfo Operating systems & Components / Operating system package or component libisccfg1600 Operating systems & Components / Operating system package or component libisccc1600-debuginfo Operating systems & Components / Operating system package or component libisccc1600 Operating systems & Components / Operating system package or component libisc1606-debuginfo Operating systems & Components / Operating system package or component libisc1606 Operating systems & Components / Operating system package or component libirs1601-debuginfo Operating systems & Components / Operating system package or component libirs1601 Operating systems & Components / Operating system package or component libirs-devel Operating systems & Components / Operating system package or component libdns1605-debuginfo Operating systems & Components / Operating system package or component libdns1605 Operating systems & Components / Operating system package or component libbind9-1600-debuginfo Operating systems & Components / Operating system package or component libbind9-1600 Operating systems & Components / Operating system package or component bind-utils-debuginfo Operating systems & Components / Operating system package or component bind-utils Operating systems & Components / Operating system package or component bind-devel Operating systems & Components / Operating system package or component bind-doc Operating systems & Components / Operating system package or component bind-debugsource Operating systems & Components / Operating system package or component bind-debuginfo Operating systems & Components / Operating system package or component bind-chrootenv Operating systems & Components / Operating system package or component bind Operating systems & Components / Operating system package or component
Vendor	SUSE

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Resource exhaustion

EUVDB-ID: #VU57752

Risk: Medium

CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-25219

CWE-ID: CWE-400 - Resource exhaustion

Exploit availability: No

Description

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

The vulnerability exists due to BIND does not properly control consumption of internal resources when processing lame cache. A remote attacker can trigger resource exhaustion and perform a denial of service (DoS) attack.

Mitigation

Update the affected package bind to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Module for Server Applications: 15-SP2

SUSE Linux Enterprise Module for Basesystem: 15-SP2

python3-bind: before 9.16.6-12.57.1

libns1604-debuginfo: before 9.16.6-12.57.1

libns1604: before 9.16.6-12.57.1

libisccfg1600-debuginfo: before 9.16.6-12.57.1

libisccfg1600: before 9.16.6-12.57.1

libisccc1600-debuginfo: before 9.16.6-12.57.1

libisccc1600: before 9.16.6-12.57.1

libisc1606-debuginfo: before 9.16.6-12.57.1

libisc1606: before 9.16.6-12.57.1

libirs1601-debuginfo: before 9.16.6-12.57.1

libirs1601: before 9.16.6-12.57.1

libirs-devel: before 9.16.6-12.57.1

libdns1605-debuginfo: before 9.16.6-12.57.1

libdns1605: before 9.16.6-12.57.1

libbind9-1600-debuginfo: before 9.16.6-12.57.1

libbind9-1600: before 9.16.6-12.57.1

bind-utils-debuginfo: before 9.16.6-12.57.1

bind-utils: before 9.16.6-12.57.1

bind-devel: before 9.16.6-12.57.1

bind-doc: before 9.16.6-12.57.1

bind-debugsource: before 9.16.6-12.57.1

bind-debuginfo: before 9.16.6-12.57.1

bind-chrootenv: before 9.16.6-12.57.1

bind: before 9.16.6-12.57.1

CPE2.3

External links

http://www.suse.com/support/update/announcement/2021/suse-su-20213773-1/

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.