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amazonAmazonALAS-2014-349
HistoryJun 04, 2014 - 3:45 p.m.

Important: openssl

2014-06-0415:45:00
alas.aws.amazon.com
28

CVSS2

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:P/I:P/A:P

CVSS3

7.4

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

NONE

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

EPSS

0.974

Percentile

99.9%

Issue Overview:

It was found that OpenSSL clients and servers could be forced, via a specially crafted handshake packet, to use weak keying material for communication. A man-in-the-middle attacker could use this flaw to decrypt and modify traffic between a client and a server. (CVE-2014-0224)

Note: In order to exploit this flaw, both the server and the client must be using a vulnerable version of OpenSSL; the server must be using OpenSSL version 1.0.1 and above, and the client must be using any version of OpenSSL.

A buffer overflow flaw was found in the way OpenSSL handled invalid DTLS packet fragments. A remote attacker could possibly use this flaw to execute arbitrary code on a DTLS client or server. (CVE-2014-0195)

Multiple flaws were found in the way OpenSSL handled read and write buffers when the SSL_MODE_RELEASE_BUFFERS mode was enabled. A TLS/SSL client or server using OpenSSL could crash or unexpectedly drop connections when processing certain SSL traffic. (CVE-2010-5298, CVE-2014-0198)

A denial of service flaw was found in the way OpenSSL handled certain DTLS ServerHello requests. A specially crafted DTLS handshake packet could cause a DTLS client using OpenSSL to crash. (CVE-2014-0221)

A NULL pointer dereference flaw was found in the way OpenSSL performed anonymous Elliptic Curve Diffie Hellman (ECDH) key exchange. A specially crafted handshake packet could cause a TLS/SSL client that has the anonymous ECDH cipher suite enabled to crash. (CVE-2014-3470)

An integer underflow flaw, leading to a heap-based buffer overflow, was found in the way OpenSSL decoded certain base64 strings. A remote attacker could provide a specially crafted base64 string via certain PEM processing routines that, when parsed by the OpenSSL library, would cause the OpenSSL server to crash. (CVE-2015-0292)

Affected Packages:

openssl

Issue Correction:
Run yum update openssl to update your system.

New Packages:

i686:  
    openssl-devel-1.0.1h-1.72.amzn1.i686  
    openssl-1.0.1h-1.72.amzn1.i686  
    openssl-debuginfo-1.0.1h-1.72.amzn1.i686  
    openssl-perl-1.0.1h-1.72.amzn1.i686  
    openssl-static-1.0.1h-1.72.amzn1.i686  
  
src:  
    openssl-1.0.1h-1.72.amzn1.src  
  
x86_64:  
    openssl-debuginfo-1.0.1h-1.72.amzn1.x86_64  
    openssl-static-1.0.1h-1.72.amzn1.x86_64  
    openssl-devel-1.0.1h-1.72.amzn1.x86_64  
    openssl-perl-1.0.1h-1.72.amzn1.x86_64  
    openssl-1.0.1h-1.72.amzn1.x86_64  

Additional References

Red Hat: CVE-2010-5298, CVE-2014-0195, CVE-2014-0198, CVE-2014-0221, CVE-2014-0224, CVE-2014-3470, CVE-2015-0292

Mitre: CVE-2010-5298, CVE-2014-0195, CVE-2014-0198, CVE-2014-0221, CVE-2014-0224, CVE-2014-3470, CVE-2015-0292

CVSS2

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:P/I:P/A:P

CVSS3

7.4

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

NONE

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

EPSS

0.974

Percentile

99.9%