Amazon Linux AMI update for openssl



Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2015-1793
CWE-ID CWE-254
Exploitation vector Network
Public exploit N/A
Vulnerable software
 Amazon Linux AMI
Operating systems & Components / Operating system

Vendor Amazon Web Services

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Security Features

EUVDB-ID: #VU33290

Risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2015-1793

CWE-ID: CWE-254 - Security Features

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to read and manipulate data.

The X509_verify_cert function in crypto/x509/x509_vfy.c in OpenSSL 1.0.1n, 1.0.1o, 1.0.2b, and 1.0.2c does not properly process X.509 Basic Constraints cA values during identification of alternative certificate chains, which allows remote attackers to spoof a Certification Authority role and trigger unintended certificate verifications via a valid leaf certificate.

Mitigation

Update the affected packages:

i686:
    openssl-1.0.1k-10.87.amzn1.i686
    openssl-perl-1.0.1k-10.87.amzn1.i686
    openssl-devel-1.0.1k-10.87.amzn1.i686
    openssl-static-1.0.1k-10.87.amzn1.i686
    openssl-debuginfo-1.0.1k-10.87.amzn1.i686

src:
    openssl-1.0.1k-10.87.amzn1.src

x86_64:
    openssl-devel-1.0.1k-10.87.amzn1.x86_64
    openssl-debuginfo-1.0.1k-10.87.amzn1.x86_64
    openssl-perl-1.0.1k-10.87.amzn1.x86_64
    openssl-static-1.0.1k-10.87.amzn1.x86_64
    openssl-1.0.1k-10.87.amzn1.x86_64

Vulnerable software versions

Amazon Linux AMI: All versions

CPE2.3 External links

https://alas.aws.amazon.com/ALAS-2015-564.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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