Amazon Linux AMI update for python34



Published: 2019-05-06
Risk Medium
Patch available YES
Number of vulnerabilities 2
CVE-ID CVE-2019-9636
CVE-2018-20406
CWE-ID CWE-20
CWE-190
Exploitation vector Network
Public exploit N/A
Vulnerable software
Subscribe 		Python
Universal components / Libraries / Scripting languages

Vendor Python.org

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Input validation error

EUVDB-ID: #VU18355

Risk: Medium

CVSSv3.1: 6.2 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-9636

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain access to sensitive information.

The vulnerability exists due to insufficient validation of user-supplied input when processing data in Unicode encoding with an incorrect netloc during NFKC normalization. A remote attacker can gain access to sensitive information.

Mitigation

Update the affected packages.

i686:
    python34-devel-3.4.10-1.43.amzn1.i686
    python34-debuginfo-3.4.10-1.43.amzn1.i686
    python34-libs-3.4.10-1.43.amzn1.i686
    python34-tools-3.4.10-1.43.amzn1.i686
    python34-test-3.4.10-1.43.amzn1.i686
    python34-3.4.10-1.43.amzn1.i686

src:
    python34-3.4.10-1.43.amzn1.src

x86_64:
    python34-3.4.10-1.43.amzn1.x86_64
    python34-debuginfo-3.4.10-1.43.amzn1.x86_64
    python34-libs-3.4.10-1.43.amzn1.x86_64
    python34-devel-3.4.10-1.43.amzn1.x86_64
    python34-tools-3.4.10-1.43.amzn1.x86_64
    python34-test-3.4.10-1.43.amzn1.x86_64

Vulnerable software versions

Python: 2.7 - 3.7.2

External links

http://alas.aws.amazon.com/ALAS-2019-1202.html


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Integer overflow

EUVDB-ID: #VU18403

Risk: Low

CVSSv3.1: 5.2 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-20406

CWE-ID: CWE-190 - Integer overflow

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform denial of service (DoS) attack.

The vulnerability exists due to integer overflow in modules/_pickle.c when processing a large LONG_BINPUT value during the "resize to twice the size" attempt. A remote attacker can supply overly large data, trigger integer overflow and exhaust all resources on the system.

Mitigation

Update the affected packages.

i686:
    python34-devel-3.4.10-1.43.amzn1.i686
    python34-debuginfo-3.4.10-1.43.amzn1.i686
    python34-libs-3.4.10-1.43.amzn1.i686
    python34-tools-3.4.10-1.43.amzn1.i686
    python34-test-3.4.10-1.43.amzn1.i686
    python34-3.4.10-1.43.amzn1.i686

src:
    python34-3.4.10-1.43.amzn1.src

x86_64:
    python34-3.4.10-1.43.amzn1.x86_64
    python34-debuginfo-3.4.10-1.43.amzn1.x86_64
    python34-libs-3.4.10-1.43.amzn1.x86_64
    python34-devel-3.4.10-1.43.amzn1.x86_64
    python34-tools-3.4.10-1.43.amzn1.x86_64
    python34-test-3.4.10-1.43.amzn1.x86_64

Vulnerable software versions

Python: 3.6.0 - 3.7.0

External links

http://alas.aws.amazon.com/ALAS-2019-1202.html


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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