SUSE update for bind

1) Resource exhaustion

EUVDB-ID: #VU77612

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-2828

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 application does not properly control consumption of internal resources. A remote attacker can cause the amount of memory used by a named resolver to go well beyond the configured max-cache-size limit. The effectiveness of the attack depends on a number of factors (e.g. query load, query patterns), but since the default value of the max-cache-size statement is 90%, in the worst case the attacker can exhaust all available memory on the host running named, leading to a denial-of-service condition.

Mitigation

Update the affected package bind to the latest version.

Vulnerable software versions

Basesystem Module: 15-SP4 - 15-SP5

SUSE Linux Enterprise Server for SAP Applications 15: SP3 - SP5

SUSE Linux Enterprise Server 15: SP3 - SP5

SUSE Linux Enterprise Real Time 15: SP3 - SP5

SUSE Linux Enterprise High Performance Computing 15: SP3 - SP5

SUSE Linux Enterprise Desktop 15: SP4 - SP5

SUSE Linux Enterprise Server 15 SP3 LTSS: 15-SP3

SUSE Linux Enterprise High Performance Computing LTSS 15: SP3

SUSE Linux Enterprise High Performance Computing ESPOS 15: SP3

SUSE Enterprise Storage: 7.1

SUSE Manager Retail Branch Server: 4.2 - 4.3

SUSE Manager Server: 4.2 - 4.3

SUSE Manager Proxy: 4.2 - 4.3

openSUSE Leap: 15.3 - 15.4

bind-doc: before 9.16.6-150300.22.30.1

python3-bind: before 9.16.6-150300.22.30.1

bind-devel: before 9.16.6-150300.22.30.1

libdns1605: before 9.16.6-150300.22.30.1

libisccfg1600: before 9.16.6-150300.22.30.1

bind-chrootenv: before 9.16.6-150300.22.30.1

libisccc1600-debuginfo: before 9.16.6-150300.22.30.1

libbind9-1600-debuginfo: before 9.16.6-150300.22.30.1

bind: before 9.16.6-150300.22.30.1

libisc1606-debuginfo: before 9.16.6-150300.22.30.1

bind-utils-debuginfo: before 9.16.6-150300.22.30.1

libns1604-debuginfo: before 9.16.6-150300.22.30.1

libisccc1600: before 9.16.6-150300.22.30.1

libirs-devel: before 9.16.6-150300.22.30.1

libirs1601: before 9.16.6-150300.22.30.1

bind-utils: before 9.16.6-150300.22.30.1

libns1604: before 9.16.6-150300.22.30.1

bind-debuginfo: before 9.16.6-150300.22.30.1

libdns1605-debuginfo: before 9.16.6-150300.22.30.1

libisccfg1600-debuginfo: before 9.16.6-150300.22.30.1

bind-debugsource: before 9.16.6-150300.22.30.1

libirs1601-debuginfo: before 9.16.6-150300.22.30.1

libisc1606: before 9.16.6-150300.22.30.1

libbind9-1600: before 9.16.6-150300.22.30.1

External links

http://www.suse.com/support/update/announcement/2023/suse-su-20232954-1/

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.