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amazonAmazonALAS2-2023-1908
HistoryJan 18, 2023 - 12:16 a.m.

Important: libtasn1

2023-01-1800:16:00
alas.aws.amazon.com
32
cve-2021-46848
amazon linux 2
libtasn1
array size check

9.1 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

HIGH

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

9.5 High

AI Score

Confidence

High

0.004 Low

EPSS

Percentile

73.4%

JSON

Issue Overview:

GNU Libtasn1 before 4.19.0 has an ETYPE_OK off-by-one array size check that affects asn1_encode_simple_der. (CVE-2021-46848)

Affected Packages:

libtasn1

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 libtasn1 to update your system.

New Packages:

aarch64:  
    libtasn1-4.10-1.amzn2.0.3.aarch64  
    libtasn1-devel-4.10-1.amzn2.0.3.aarch64  
    libtasn1-tools-4.10-1.amzn2.0.3.aarch64  
    libtasn1-debuginfo-4.10-1.amzn2.0.3.aarch64  
  
i686:  
    libtasn1-4.10-1.amzn2.0.3.i686  
    libtasn1-devel-4.10-1.amzn2.0.3.i686  
    libtasn1-tools-4.10-1.amzn2.0.3.i686  
    libtasn1-debuginfo-4.10-1.amzn2.0.3.i686  
  
src:  
    libtasn1-4.10-1.amzn2.0.3.src  
  
x86_64:  
    libtasn1-4.10-1.amzn2.0.3.x86_64  
    libtasn1-devel-4.10-1.amzn2.0.3.x86_64  
    libtasn1-tools-4.10-1.amzn2.0.3.x86_64  
    libtasn1-debuginfo-4.10-1.amzn2.0.3.x86_64

Additional References

Red Hat: CVE-2021-46848

Mitre: CVE-2021-46848

OSVersionArchitecturePackageVersionFilename
Amazon Linux2aarch64libtasn1< 4.10-1.amzn2.0.3libtasn1-4.10-1.amzn2.0.3.aarch64.rpm
Amazon Linux2aarch64libtasn1-devel< 4.10-1.amzn2.0.3libtasn1-devel-4.10-1.amzn2.0.3.aarch64.rpm
Amazon Linux2aarch64libtasn1-tools< 4.10-1.amzn2.0.3libtasn1-tools-4.10-1.amzn2.0.3.aarch64.rpm
Amazon Linux2aarch64libtasn1-debuginfo< 4.10-1.amzn2.0.3libtasn1-debuginfo-4.10-1.amzn2.0.3.aarch64.rpm
Amazon Linux2i686libtasn1< 4.10-1.amzn2.0.3libtasn1-4.10-1.amzn2.0.3.i686.rpm
Amazon Linux2i686libtasn1-devel< 4.10-1.amzn2.0.3libtasn1-devel-4.10-1.amzn2.0.3.i686.rpm
Amazon Linux2i686libtasn1-tools< 4.10-1.amzn2.0.3libtasn1-tools-4.10-1.amzn2.0.3.i686.rpm
Amazon Linux2i686libtasn1-debuginfo< 4.10-1.amzn2.0.3libtasn1-debuginfo-4.10-1.amzn2.0.3.i686.rpm
Amazon Linux2x86_64libtasn1< 4.10-1.amzn2.0.3libtasn1-4.10-1.amzn2.0.3.x86_64.rpm
Amazon Linux2x86_64libtasn1-devel< 4.10-1.amzn2.0.3libtasn1-devel-4.10-1.amzn2.0.3.x86_64.rpm
Rows per page:
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9.1 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

HIGH

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

9.5 High

AI Score

Confidence

High

0.004 Low

EPSS

Percentile

73.4%

JSON
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