Amazon Linux AMI update for bouncycastle



Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2023-33202
CWE-ID CWE-400
Exploitation vector Network
Public exploit N/A
Vulnerable software
 Amazon Linux AMI
Operating systems & Components / Operating system

bouncycastle
Operating systems & Components / Operating system package or component

Vendor Amazon Web Services

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Resource exhaustion

EUVDB-ID: #VU85874

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-2023-33202

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 application does not properly control consumption of internal resources when parsing OpenSSL PEM encoded streams containing X.509 certificates. A remote attacker can send ASN.1 data through the PEMParser to trigger resource exhaustion and perform a denial of service (DoS) attack.

Mitigation

Update the affected packages:

noarch:
    bouncycastle-tls-1.70-4.amzn2023.0.4.noarch
    bouncycastle-pkix-1.70-4.amzn2023.0.4.noarch
    bouncycastle-mail-1.70-4.amzn2023.0.4.noarch
    bouncycastle-pg-1.70-4.amzn2023.0.4.noarch
    bouncycastle-1.70-4.amzn2023.0.4.noarch
    bouncycastle-util-1.70-4.amzn2023.0.4.noarch
    bouncycastle-javadoc-1.70-4.amzn2023.0.4.noarch

src:
    bouncycastle-1.70-4.amzn2023.0.4.src

Vulnerable software versions

Amazon Linux AMI: All versions

bouncycastle: before 1.70-4

CPE2.3 External links

http://alas.aws.amazon.com/AL2023/ALAS-2024-479.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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