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amazonAmazonALAS2-2022-1849
HistorySep 15, 2022 - 4:54 a.m.

Medium: zlib

2022-09-1504:54:00
alas.aws.amazon.com
22
zlib
security vulnerability
heap-based buffer overflow
amazon linux 2
update
new packages
cve-2022-37434

9.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

9.8 High

AI Score

Confidence

High

0.003 Low

EPSS

Percentile

71.7%

JSON

Issue Overview:

A security vulnerability was found in zlib. The flaw triggered a heap-based buffer in inflate in the inflate.c function via a large gzip header extra field. This flaw is only applicable in the call inflateGetHeader. (CVE-2022-37434)

Affected Packages:

zlib

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 zlib to update your system.

New Packages:

aarch64:  
    zlib-1.2.7-19.amzn2.0.2.aarch64  
    zlib-devel-1.2.7-19.amzn2.0.2.aarch64  
    zlib-static-1.2.7-19.amzn2.0.2.aarch64  
    minizip-1.2.7-19.amzn2.0.2.aarch64  
    minizip-devel-1.2.7-19.amzn2.0.2.aarch64  
    zlib-debuginfo-1.2.7-19.amzn2.0.2.aarch64  
  
i686:  
    zlib-1.2.7-19.amzn2.0.2.i686  
    zlib-devel-1.2.7-19.amzn2.0.2.i686  
    zlib-static-1.2.7-19.amzn2.0.2.i686  
    minizip-1.2.7-19.amzn2.0.2.i686  
    minizip-devel-1.2.7-19.amzn2.0.2.i686  
    zlib-debuginfo-1.2.7-19.amzn2.0.2.i686  
  
src:  
    zlib-1.2.7-19.amzn2.0.2.src  
  
x86_64:  
    zlib-1.2.7-19.amzn2.0.2.x86_64  
    zlib-devel-1.2.7-19.amzn2.0.2.x86_64  
    zlib-static-1.2.7-19.amzn2.0.2.x86_64  
    minizip-1.2.7-19.amzn2.0.2.x86_64  
    minizip-devel-1.2.7-19.amzn2.0.2.x86_64  
    zlib-debuginfo-1.2.7-19.amzn2.0.2.x86_64

Additional References

Red Hat: CVE-2022-37434

Mitre: CVE-2022-37434

OSVersionArchitecturePackageVersionFilename
Amazon Linux2aarch64zlib< 1.2.7-19.amzn2.0.2zlib-1.2.7-19.amzn2.0.2.aarch64.rpm
Amazon Linux2aarch64zlib-devel< 1.2.7-19.amzn2.0.2zlib-devel-1.2.7-19.amzn2.0.2.aarch64.rpm
Amazon Linux2aarch64zlib-static< 1.2.7-19.amzn2.0.2zlib-static-1.2.7-19.amzn2.0.2.aarch64.rpm
Amazon Linux2aarch64minizip< 1.2.7-19.amzn2.0.2minizip-1.2.7-19.amzn2.0.2.aarch64.rpm
Amazon Linux2aarch64minizip-devel< 1.2.7-19.amzn2.0.2minizip-devel-1.2.7-19.amzn2.0.2.aarch64.rpm
Amazon Linux2aarch64zlib-debuginfo< 1.2.7-19.amzn2.0.2zlib-debuginfo-1.2.7-19.amzn2.0.2.aarch64.rpm
Amazon Linux2i686zlib< 1.2.7-19.amzn2.0.2zlib-1.2.7-19.amzn2.0.2.i686.rpm
Amazon Linux2i686zlib-devel< 1.2.7-19.amzn2.0.2zlib-devel-1.2.7-19.amzn2.0.2.i686.rpm
Amazon Linux2i686zlib-static< 1.2.7-19.amzn2.0.2zlib-static-1.2.7-19.amzn2.0.2.i686.rpm
Amazon Linux2i686minizip< 1.2.7-19.amzn2.0.2minizip-1.2.7-19.amzn2.0.2.i686.rpm
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9.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

9.8 High

AI Score

Confidence

High

0.003 Low

EPSS

Percentile

71.7%

JSON
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