Amazon Linux AMI update for openssl

1) Out-of-bounds read

EUVDB-ID: #VU56064

Risk: Medium

CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-3712

CWE-ID: CWE-125 - Out-of-bounds read

Exploit availability: No

Description

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

The vulnerability exists due to a boundary condition when processing ASN.1 strings related to a confusion with NULL termination of strings in array. A remote attacker can pass specially crafted data to the application to trigger an out-of-bounds read error and read contents of memory on the system or perform a denial of service (DoS) attack.

Mitigation

Update the affected packages:

i686:
    openssl-perl-1.0.2k-16.154.amzn1.i686
    openssl-devel-1.0.2k-16.154.amzn1.i686
    openssl-static-1.0.2k-16.154.amzn1.i686
    openssl-1.0.2k-16.154.amzn1.i686
    openssl-debuginfo-1.0.2k-16.154.amzn1.i686

src:
    openssl-1.0.2k-16.154.amzn1.src

x86_64:
    openssl-static-1.0.2k-16.154.amzn1.x86_64
    openssl-perl-1.0.2k-16.154.amzn1.x86_64
    openssl-devel-1.0.2k-16.154.amzn1.x86_64
    openssl-debuginfo-1.0.2k-16.154.amzn1.x86_64
    openssl-1.0.2k-16.154.amzn1.x86_64

Vulnerable software versions

Amazon Linux AMI: All versions

CPE2.3

• cpe:2.3:o:amazon_web_services:amazon_linux_ami:*:*:*:*:*:*:*:

External links

http://alas.aws.amazon.com/ALAS-2021-1541.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.