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amazonAmazonALAS2-2020-1514
HistoryOct 22, 2020 - 5:33 p.m.

Medium: fontforge

2020-10-2217:33:00
alas.aws.amazon.com
11

6.8 Medium

CVSS2

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:M/Au:N/C:P/I:P/A:P

8.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

9.1 High

AI Score

Confidence

High

0.005 Low

EPSS

Percentile

76.8%

Issue Overview:

An out-of-bounds write was discovered in fontforge while parsing SFD files containing very large LayerCount tokens. The flaw allows an attacker to overwrite data before a buffer allocated on the heap, thus causing the application to crash or execute arbitrary code. (CVE-2020-5395)

Affected Packages:

fontforge

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 fontforge to update your system.

New Packages:

aarch64:  
    fontforge-20120731b-13.amzn2.aarch64  
    fontforge-devel-20120731b-13.amzn2.aarch64  
    fontforge-debuginfo-20120731b-13.amzn2.aarch64  
  
i686:  
    fontforge-20120731b-13.amzn2.i686  
    fontforge-devel-20120731b-13.amzn2.i686  
    fontforge-debuginfo-20120731b-13.amzn2.i686  
  
src:  
    fontforge-20120731b-13.amzn2.src  
  
x86_64:  
    fontforge-20120731b-13.amzn2.x86_64  
    fontforge-devel-20120731b-13.amzn2.x86_64  
    fontforge-debuginfo-20120731b-13.amzn2.x86_64  

Additional References

Red Hat: CVE-2020-5395

Mitre: CVE-2020-5395

6.8 Medium

CVSS2

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:M/Au:N/C:P/I:P/A:P

8.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

9.1 High

AI Score

Confidence

High

0.005 Low

EPSS

Percentile

76.8%