SUSE update for libslirp

1) Release of invalid pointer or reference

EUVDB-ID: #VU54309

Risk: Low

CVSSv3.1: 3.8 [CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-3593

CWE-ID: CWE-763 - Release of invalid pointer or reference

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain access to sensitive information.

The vulnerability exists due to invalid pointer initialization within the udp6_input() function while processing UDP packets in the SLiRP networking implementation of QEMU. A malicious guest could use this vulnerability to read host memory.

Mitigation

Update the affected package libslirp to the latest version.

Vulnerable software versions

SUSE Manager Retail Branch Server: 4.2 - 4.3

SUSE Linux Enterprise Storage: 7.1

SUSE Manager Server: 4.2 - 4.3

SUSE Manager Proxy: 4.2 - 4.3

SUSE Linux Enterprise Micro: 5.1 - 5.2

openSUSE Leap: 15.3 - 15.4

SUSE Linux Enterprise Server for SAP Applications: 15-SP3 - 15-SP4

SUSE Linux Enterprise Server: 15-SP3 - 15-SP4

SUSE Linux Enterprise High Performance Computing: 15-SP3 - 15-SP4

SUSE Linux Enterprise Module for Server Applications: 15-SP3 - 15-SP4

libslirp0-debuginfo: before 4.3.1-150300.11.1

libslirp0: before 4.3.1-150300.11.1

libslirp-devel: before 4.3.1-150300.11.1

libslirp-debugsource: before 4.3.1-150300.11.1

External links

http://www.suse.com/support/update/announcement/2022/suse-su-20222941-1/

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

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