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amazonAmazonALAS-2024-2469
HistoryFeb 15, 2024 - 3:52 a.m.

Important: ghostscript

2024-02-1503:52:00
alas.aws.amazon.com
9
ghostscript
out-of-bounds write
use-after-free
pdf
cve-2020-36773
amazon linux
update
security advisory

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

7.2 High

AI Score

Confidence

Low

0.001 Low

EPSS

Percentile

26.1%

Issue Overview:

Artifex Ghostscript before 9.53.0 has an out-of-bounds write and use-after-free in devices/vector/gdevtxtw.c (for txtwrite) because a single character code in a PDF document can map to more than one Unicode code point (e.g., for a ligature). (CVE-2020-36773)

Affected Packages:

ghostscript

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 ghostscript to update your system.

New Packages:

aarch64:  
    ghostscript-9.25-5.amzn2.0.9.aarch64  
    libgs-9.25-5.amzn2.0.9.aarch64  
    libgs-devel-9.25-5.amzn2.0.9.aarch64  
    ghostscript-gtk-9.25-5.amzn2.0.9.aarch64  
    ghostscript-cups-9.25-5.amzn2.0.9.aarch64  
    ghostscript-debuginfo-9.25-5.amzn2.0.9.aarch64  
  
i686:  
    ghostscript-9.25-5.amzn2.0.9.i686  
    libgs-9.25-5.amzn2.0.9.i686  
    libgs-devel-9.25-5.amzn2.0.9.i686  
    ghostscript-gtk-9.25-5.amzn2.0.9.i686  
    ghostscript-cups-9.25-5.amzn2.0.9.i686  
    ghostscript-debuginfo-9.25-5.amzn2.0.9.i686  
  
noarch:  
    ghostscript-doc-9.25-5.amzn2.0.9.noarch  
  
src:  
    ghostscript-9.25-5.amzn2.0.9.src  
  
x86_64:  
    ghostscript-9.25-5.amzn2.0.9.x86_64  
    libgs-9.25-5.amzn2.0.9.x86_64  
    libgs-devel-9.25-5.amzn2.0.9.x86_64  
    ghostscript-gtk-9.25-5.amzn2.0.9.x86_64  
    ghostscript-cups-9.25-5.amzn2.0.9.x86_64  
    ghostscript-debuginfo-9.25-5.amzn2.0.9.x86_64  

Additional References

Red Hat: CVE-2020-36773

Mitre: CVE-2020-36773

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

7.2 High

AI Score

Confidence

Low

0.001 Low

EPSS

Percentile

26.1%