Amazon Linux AMI update for python27

Published: 2023-04-06

Risk	Medium
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2022-45061 CVE-2023-24329
CWE-ID	CWE-400 CWE-20
Exploitation vector	Network
Public exploit	N/A
Vulnerable software Subscribe	Amazon Linux AMI Operating systems & Components / Operating system python27 Operating systems & Components / Operating system package or component
Vendor	Amazon Web Services

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Resource exhaustion

EUVDB-ID: #VU69392

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-45061

CWE-ID: CWE-400 - Resource exhaustion

Exploit availability: No

Description

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

The vulnerability exists due to usage of an unnecessary quadratic algorithm in one path when processing some inputs to the IDNA (RFC 3490) decoder. A remote attacker can pass a specially crafted name to he decoder, trigger resource excessive CPU consumption and perform a denial of service (DoS) attack.

Mitigation

Update the affected packages:

i686:
    python27-devel-2.7.18-2.145.amzn1.i686
    python27-libs-2.7.18-2.145.amzn1.i686
    python27-tools-2.7.18-2.145.amzn1.i686
    python27-test-2.7.18-2.145.amzn1.i686
    python27-2.7.18-2.145.amzn1.i686
    python27-debuginfo-2.7.18-2.145.amzn1.i686

src:
    python27-2.7.18-2.145.amzn1.src

x86_64:
    python27-libs-2.7.18-2.145.amzn1.x86_64
    python27-test-2.7.18-2.145.amzn1.x86_64
    python27-devel-2.7.18-2.145.amzn1.x86_64
    python27-tools-2.7.18-2.145.amzn1.x86_64
    python27-debuginfo-2.7.18-2.145.amzn1.x86_64
    python27-2.7.18-2.145.amzn1.x86_64

Vulnerable software versions

Amazon Linux AMI: All versions

python27: before 2.7.18-2.145

External links

http://alas.aws.amazon.com/ALAS-2023-1713.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) Input validation error

EUVDB-ID: #VU72618