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amazonAmazonALAS2-2023-1947
HistoryFeb 17, 2023 - 12:11 a.m.

Important: ghostscript

2023-02-1700:11:00
alas.aws.amazon.com
18
ghostscript
buffer overflow
memory corruption
denial of service
cve-2020-27792

CVSS3

7.1

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

HIGH

Availability Impact

HIGH

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

AI Score

7.3

Confidence

High

EPSS

0.001

Percentile

29.3%

Issue Overview:

A heap-based buffer over write vulnerability was found in GhostScript’s lp8000_print_page() function in gdevlp8k.c file. An attacker could trick a user to open a crafted PDF file, triggering the heap buffer overflow that could lead to memory corruption or a denial of service. (CVE-2020-27792)

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.amzn2.0.1.aarch64  
    libgs-9.25-5.amzn2.0.1.aarch64  
    libgs-devel-9.25-5.amzn2.0.1.aarch64  
    ghostscript-gtk-9.25-5.amzn2.0.1.aarch64  
    ghostscript-cups-9.25-5.amzn2.0.1.aarch64  
    ghostscript-debuginfo-9.25-5.amzn2.0.1.aarch64  
  
i686:  
    ghostscript-9.25-5.amzn2.0.1.i686  
    libgs-9.25-5.amzn2.0.1.i686  
    libgs-devel-9.25-5.amzn2.0.1.i686  
    ghostscript-gtk-9.25-5.amzn2.0.1.i686  
    ghostscript-cups-9.25-5.amzn2.0.1.i686  
    ghostscript-debuginfo-9.25-5.amzn2.0.1.i686  
  
noarch:  
    ghostscript-doc-9.25-5.amzn2.0.1.noarch  
  
src:  
    ghostscript-9.25-5.amzn2.0.1.src  
  
x86_64:  
    ghostscript-9.25-5.amzn2.0.1.x86_64  
    libgs-9.25-5.amzn2.0.1.x86_64  
    libgs-devel-9.25-5.amzn2.0.1.x86_64  
    ghostscript-gtk-9.25-5.amzn2.0.1.x86_64  
    ghostscript-cups-9.25-5.amzn2.0.1.x86_64  
    ghostscript-debuginfo-9.25-5.amzn2.0.1.x86_64  

Additional References

Red Hat: CVE-2020-27792

Mitre: CVE-2020-27792

CVSS3

7.1

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

HIGH

Availability Impact

HIGH

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

AI Score

7.3

Confidence

High

EPSS

0.001

Percentile

29.3%