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amazonAmazonALAS2-2020-1492
HistorySep 15, 2020 - 5:18 p.m.

Low: lua53

2020-09-1517:18:00
alas.aws.amazon.com
14

5.3 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

LOW

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

7.5 High

AI Score

Confidence

Low

5 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:N/I:N/A:P

0.005 Low

EPSS

Percentile

76.1%

Issue Overview:

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). (CVE-2020-24370)

Affected Packages:

lua53

Note:

This advisory is applicable to Amazon Linux 2 (AL2) Core repository. Visit this FAQ section for the difference between AL2 Core and AL2 Extras advisories.

Issue Correction:
Run yum update lua53 to update your system.

New Packages:

aarch64:  
    lua53-5.3.5-7.amzn2.0.1.aarch64  
    lua53-devel-5.3.5-7.amzn2.0.1.aarch64  
    lua53-libs-5.3.5-7.amzn2.0.1.aarch64  
    lua53-static-5.3.5-7.amzn2.0.1.aarch64  
    lua53-debuginfo-5.3.5-7.amzn2.0.1.aarch64  
  
i686:  
    lua53-5.3.5-7.amzn2.0.1.i686  
    lua53-devel-5.3.5-7.amzn2.0.1.i686  
    lua53-libs-5.3.5-7.amzn2.0.1.i686  
    lua53-static-5.3.5-7.amzn2.0.1.i686  
    lua53-debuginfo-5.3.5-7.amzn2.0.1.i686  
  
src:  
    lua53-5.3.5-7.amzn2.0.1.src  
  
x86_64:  
    lua53-5.3.5-7.amzn2.0.1.x86_64  
    lua53-devel-5.3.5-7.amzn2.0.1.x86_64  
    lua53-libs-5.3.5-7.amzn2.0.1.x86_64  
    lua53-static-5.3.5-7.amzn2.0.1.x86_64  
    lua53-debuginfo-5.3.5-7.amzn2.0.1.x86_64  

Additional References

Red Hat: CVE-2020-24370

Mitre: CVE-2020-24370

5.3 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

LOW

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

7.5 High

AI Score

Confidence

Low

5 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:N/I:N/A:P

0.005 Low

EPSS

Percentile

76.1%