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amazonAmazonALAS2-2022-1885
HistoryDec 01, 2022 - 8:31 p.m.

Important: expat

2022-12-0120:31:00
alas.aws.amazon.com
16
exploit
libexpat
vulnerability
xml parsing
use-after free
cve-2022-43680
amazon linux 2
update
aarch64
i686
x86_64
red hat
mitre

7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

8 High

AI Score

Confidence

High

0.004 Low

EPSS

Percentile

74.1%

JSON

Issue Overview:

In libexpat through 2.4.9, there is a use-after free caused by overeager destruction of a shared DTD in XML_ExternalEntityParserCreate in out-of-memory situations. (CVE-2022-43680)

Affected Packages:

expat

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 expat to update your system.

New Packages:

aarch64:  
    expat-2.1.0-15.amzn2.0.2.aarch64  
    expat-devel-2.1.0-15.amzn2.0.2.aarch64  
    expat-static-2.1.0-15.amzn2.0.2.aarch64  
    expat-debuginfo-2.1.0-15.amzn2.0.2.aarch64  
  
i686:  
    expat-2.1.0-15.amzn2.0.2.i686  
    expat-devel-2.1.0-15.amzn2.0.2.i686  
    expat-static-2.1.0-15.amzn2.0.2.i686  
    expat-debuginfo-2.1.0-15.amzn2.0.2.i686  
  
src:  
    expat-2.1.0-15.amzn2.0.2.src  
  
x86_64:  
    expat-2.1.0-15.amzn2.0.2.x86_64  
    expat-devel-2.1.0-15.amzn2.0.2.x86_64  
    expat-static-2.1.0-15.amzn2.0.2.x86_64  
    expat-debuginfo-2.1.0-15.amzn2.0.2.x86_64

Additional References

Red Hat: CVE-2022-43680

Mitre: CVE-2022-43680

OSVersionArchitecturePackageVersionFilename
Amazon Linux2aarch64expat< 2.1.0-15.amzn2.0.2expat-2.1.0-15.amzn2.0.2.aarch64.rpm
Amazon Linux2aarch64expat-devel< 2.1.0-15.amzn2.0.2expat-devel-2.1.0-15.amzn2.0.2.aarch64.rpm
Amazon Linux2aarch64expat-static< 2.1.0-15.amzn2.0.2expat-static-2.1.0-15.amzn2.0.2.aarch64.rpm
Amazon Linux2aarch64expat-debuginfo< 2.1.0-15.amzn2.0.2expat-debuginfo-2.1.0-15.amzn2.0.2.aarch64.rpm
Amazon Linux2i686expat< 2.1.0-15.amzn2.0.2expat-2.1.0-15.amzn2.0.2.i686.rpm
Amazon Linux2i686expat-devel< 2.1.0-15.amzn2.0.2expat-devel-2.1.0-15.amzn2.0.2.i686.rpm
Amazon Linux2i686expat-static< 2.1.0-15.amzn2.0.2expat-static-2.1.0-15.amzn2.0.2.i686.rpm
Amazon Linux2i686expat-debuginfo< 2.1.0-15.amzn2.0.2expat-debuginfo-2.1.0-15.amzn2.0.2.i686.rpm
Amazon Linux2x86_64expat< 2.1.0-15.amzn2.0.2expat-2.1.0-15.amzn2.0.2.x86_64.rpm
Amazon Linux2x86_64expat-devel< 2.1.0-15.amzn2.0.2expat-devel-2.1.0-15.amzn2.0.2.x86_64.rpm
Rows per page:
1-10 of 121

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CVSS3

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NETWORK

Attack Complexity

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Privileges Required

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User Interaction

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Scope

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Confidentiality Impact

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Integrity Impact

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Availability Impact

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AI Score

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High

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JSON
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