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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
12

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

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

76.5%

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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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

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

76.5%

JSON
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