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amazonAmazonALAS2-2019-1233
HistoryJul 18, 2019 - 5:31 p.m.

Low: curl

2019-07-1817:31:00
alas.aws.amazon.com
27

CVSS2

4.6

Attack Vector

LOCAL

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

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

CVSS3

7.8

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

AI Score

7.7

Confidence

High

EPSS

0.053

Percentile

93.1%

Issue Overview:

An integer overflow in curl’s URL API results in a buffer overflow in libcurl. (CVE-2019-5435)

A heap buffer overflow in the TFTP receiving code allows for DoS or arbitrary code execution in libcurl. (CVE-2019-5436)

Affected Packages:

curl

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 curl to update your system.

New Packages:

aarch64:  
    curl-7.61.1-11.amzn2.0.2.aarch64  
    libcurl-7.61.1-11.amzn2.0.2.aarch64  
    libcurl-devel-7.61.1-11.amzn2.0.2.aarch64  
    curl-debuginfo-7.61.1-11.amzn2.0.2.aarch64  
  
i686:  
    curl-7.61.1-11.amzn2.0.2.i686  
    libcurl-7.61.1-11.amzn2.0.2.i686  
    libcurl-devel-7.61.1-11.amzn2.0.2.i686  
    curl-debuginfo-7.61.1-11.amzn2.0.2.i686  
  
src:  
    curl-7.61.1-11.amzn2.0.2.src  
  
x86_64:  
    curl-7.61.1-11.amzn2.0.2.x86_64  
    libcurl-7.61.1-11.amzn2.0.2.x86_64  
    libcurl-devel-7.61.1-11.amzn2.0.2.x86_64  
    curl-debuginfo-7.61.1-11.amzn2.0.2.x86_64  

Additional References

Red Hat: CVE-2019-5435, CVE-2019-5436

Mitre: CVE-2019-5435, CVE-2019-5436

CVSS2

4.6

Attack Vector

LOCAL

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

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

CVSS3

7.8

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

AI Score

7.7

Confidence

High

EPSS

0.053

Percentile

93.1%