SUSE update for lua53



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
 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

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Green]

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

CPE2.3 External links

https://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

Risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2020-24371

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

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

lgc.c in Lua 5.4.0 mishandles the interaction between barriers and the sweep phase, leading to a memory access violation involving collectgarbage.

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

CPE2.3 External links

https://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.



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