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freebsdFreeBSD5631AE98-BE9E-11E3-B5E3-C80AA9043978
HistoryApr 07, 2014 - 12:00 a.m.

OpenSSL -- Remote Information Disclosure

2014-04-0700:00:00
vuxml.freebsd.org
39

7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

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

5 Medium

CVSS2

Access Vector

Access Complexity

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

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

0.975 High

EPSS

Percentile

100.0%

OpenSSL Reports:

A missing bounds check in the handling of the TLS heartbeat extension can be
used to reveal up to 64k of memory to a connected client or server.
Affected users should upgrade to OpenSSL 1.0.1g. Users unable to immediately
upgrade can alternatively recompile OpenSSL with -DOPENSSL_NO_HEARTBEATS.

The bug allows anyone on the Internet to read the memory of the
systems protected by the vulnerable versions of the OpenSSL software.
This compromises the secret keys used to identify the service
providers and to encrypt the traffic, the names and passwords of the
users and the actual content. This allows attackers to eavesdrop
communications, steal data directly from the services and users and
to impersonate services and users.

The code used to handle the Heartbeat Extension does not do
sufficient boundary checks on record length, which allows reading
beyond the actual payload.

7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

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

5 Medium

CVSS2

Access Vector

Access Complexity

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

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

0.975 High

EPSS

Percentile

100.0%