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amazonAmazonALAS2-2020-1532
HistoryOct 22, 2020 - 6:24 p.m.

Medium: libtiff

2020-10-2218:24:00
alas.aws.amazon.com
13

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

8 High

AI Score

Confidence

High

6.8 Medium

CVSS2

Access Vector

NETWORK

Access 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

0.013 Low

EPSS

Percentile

85.6%

Issue Overview:

_TIFFCheckMalloc and _TIFFCheckRealloc in tif_aux.c in LibTIFF through 4.0.10 mishandle Integer Overflow checks because they rely on compiler behavior that is undefined by the applicable C standards. This can, for example, lead to an application crash. (CVE-2019-14973)

tif_getimage.c in LibTIFF through 4.0.10, as used in GDAL through 3.0.1 and other products, has an integer overflow that potentially causes a heap-based buffer overflow via a crafted RGBA image, related to a “Negative-size-param” condition. (CVE-2019-17546)

Affected Packages:

libtiff

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 libtiff to update your system.

New Packages:

aarch64:  
    libtiff-4.0.3-35.amzn2.aarch64  
    libtiff-devel-4.0.3-35.amzn2.aarch64  
    libtiff-static-4.0.3-35.amzn2.aarch64  
    libtiff-tools-4.0.3-35.amzn2.aarch64  
    libtiff-debuginfo-4.0.3-35.amzn2.aarch64  
  
i686:  
    libtiff-4.0.3-35.amzn2.i686  
    libtiff-devel-4.0.3-35.amzn2.i686  
    libtiff-static-4.0.3-35.amzn2.i686  
    libtiff-tools-4.0.3-35.amzn2.i686  
    libtiff-debuginfo-4.0.3-35.amzn2.i686  
  
src:  
    libtiff-4.0.3-35.amzn2.src  
  
x86_64:  
    libtiff-4.0.3-35.amzn2.x86_64  
    libtiff-devel-4.0.3-35.amzn2.x86_64  
    libtiff-static-4.0.3-35.amzn2.x86_64  
    libtiff-tools-4.0.3-35.amzn2.x86_64  
    libtiff-debuginfo-4.0.3-35.amzn2.x86_64  

Additional References

Red Hat: CVE-2019-14973, CVE-2019-17546

Mitre: CVE-2019-14973, CVE-2019-17546

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

8 High

AI Score

Confidence

High

6.8 Medium

CVSS2

Access Vector

NETWORK

Access 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

0.013 Low

EPSS

Percentile

85.6%