SUSE update for lua53

Published: 2021-06-29

Risk	Medium
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2020-24370 CVE-2020-24371
CWE-ID	CWE-191 CWE-20
Exploitation vector	Network
Public exploit	N/A
Vulnerable software Subscribe	SUSE MicroOS Operating systems & Components / Operating system SUSE Linux Enterprise Module for Basesystem Operating systems & Components / Operating system liblua5_3-5-32bit-debuginfo Operating systems & Components / Operating system package or component liblua5_3-5-32bit Operating systems & Components / Operating system package or component lua53-devel Operating systems & Components / Operating system package or component lua53 Operating systems & Components / Operating system package or component lua53-debugsource Operating systems & Components / Operating system package or component lua53-debuginfo Operating systems & Components / Operating system package or component liblua5_3-5-debuginfo Operating systems & Components / Operating system package or component liblua5_3-5 Operating systems & Components / Operating system package or component
Vendor	SUSE

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Integer underflow

EUVDB-ID: #VU45992

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-2020-24370

CWE-ID: CWE-191 - Integer underflow

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to perform service disruption.

ldebug.c in Lua 5.4.0 allows a negation overflow and segmentation fault in getlocal and setlocal, as demonstrated by getlocal(3,2^31).

Mitigation

Update the affected package lua53 to the latest version.

Vulnerable software versions

SUSE MicroOS: 5.0

SUSE Linux Enterprise Module for Basesystem: 15-SP2 - 15-SP3

liblua5_3-5-32bit-debuginfo: before 5.3.6-3.6.1

liblua5_3-5-32bit: before 5.3.6-3.6.1

lua53-devel: before 5.3.6-3.6.1

lua53: before 5.3.6-3.6.1

lua53-debugsource: before 5.3.6-3.6.1

lua53-debuginfo: before 5.3.6-3.6.1

liblua5_3-5-debuginfo: before 5.3.6-3.6.1

liblua5_3-5: before 5.3.6-3.6.1

External links

http://www.suse.com/support/update/announcement/2021/suse-su-20212196-1/

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.

2) Input validation error

EUVDB-ID: #VU45993