CVE-2016-2180 - Out-of-bounds Read

Severity

50%

Complexity

99%

Confidentiality

48%

The TS_OBJ_print_bio function in crypto/ts/ts_lib.c in the X.509 Public Key Infrastructure Time-Stamp Protocol (TSP) implementation in OpenSSL through 1.0.2h allows remote attackers to cause a denial of service (out-of-bounds read and application crash) via a crafted time-stamp file that is mishandled by the "openssl ts" command.

The TS_OBJ_print_bio function in crypto/ts/ts_lib.c in the X.509 Public Key Infrastructure Time-Stamp Protocol (TSP) implementation in OpenSSL through 1.0.2h allows remote attackers to cause a denial of service (out-of-bounds read and application crash) via a crafted time-stamp file that is mishandled by the "openssl ts" command.

CVSS 3.0 Base Score 7.5. CVSS Attack Vector: network. CVSS Attack Complexity: low. CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).

CVSS 2.0 Base Score 5. CVSS Attack Vector: network. CVSS Attack Complexity: low. CVSS Vector: (AV:N/AC:L/Au:N/C:N/I:N/A:P).

Demo Examples

Out-of-bounds Read

CWE-125

In the following code, the method retrieves a value from an array at a specific array index location that is given as an input parameter to the method


               
}

                     
return value;// check that the array index is less than the maximum// length of the array

                           
value = array[index];// get the value at the specified index of the array
// if array index is invalid then output error message// and return value indicating error
value = -1;

However, this method only verifies that the given array index is less than the maximum length of the array but does not check for the minimum value (CWE-839). This will allow a negative value to be accepted as the input array index, which will result in a out of bounds read (CWE-125) and may allow access to sensitive memory. The input array index should be checked to verify that is within the maximum and minimum range required for the array (CWE-129). In this example the if statement should be modified to include a minimum range check, as shown below.


               
...// check that the array index is within the correct// range of values for the array

Overview

Type

OpenSSL

First reported 8 years ago

2016-08-01 02:59:00

Last updated 5 years ago

2019-12-27 16:08:00

Affected Software

OpenSSL Project OpenSSL 1.0.1

1.0.1

OpenSSL Project OpenSSL 1.0.1a

1.0.1a

OpenSSL Project OpenSSL 1.0.1b

1.0.1b

OpenSSL Project OpenSSL 1.0.1c

1.0.1c

OpenSSL Project OpenSSL 1.0.1d

1.0.1d

OpenSSL Project OpenSSL 1.0.1e

1.0.1e

OpenSSL Project OpenSSL 1.0.1f

1.0.1f

OpenSSL Project OpenSSL 1.0.1g

1.0.1g

OpenSSL Project OpenSSL 1.0.1h

1.0.1h

OpenSSL Project OpenSSL 1.0.1i

1.0.1i

OpenSSL Project OpenSSL 1.0.1j

1.0.1j

OpenSSL Project OpenSSL 1.0.1k

1.0.1k

OpenSSL Project OpenSSL 1.0.1l

1.0.1l

OpenSSL OpenSSL 1.0.1m

1.0.1m

OpenSSL Project OpenSSL 1.0.1n

1.0.1n

OpenSSL Project OpenSSL 1.0.1o

1.0.1o

OpenSSL OpenSSL 1.0.1p

1.0.1p

OpenSSL 1.0.1q

1.0.1q

OpenSSL 1.0.1r

1.0.1r

OpenSSL Project 1.0.1s

1.0.1s

OpenSSL Project OpenSSL 1.0.1t

1.0.1t

OpenSSL Project OpenSSL 1.0.2

1.0.2

OpenSSL OpenSSL 1.0.2a

1.0.2a

OpenSSL Project OpenSSL 1.0.2b

1.0.2b

OpenSSL Project OpenSSL 1.0.2c

1.0.2c

OpenSSL OpenSSL 1.0.2d

1.0.2d

OpenSSL 1.0.2e

1.0.2e

OpenSSL 1.0.2f

1.0.2f

OpenSSL Project 1.0.2g

1.0.2g

OpenSSL 1.0.2h

1.0.2h

References

http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10759

Third Party Advisory

RHSA-2016:1940

http://www.oracle.com/technetwork/security-advisory/cpuapr2018-3678067.html

http://www.oracle.com/technetwork/security-advisory/cpujan2018-3236628.html

http://www.oracle.com/technetwork/security-advisory/cpujul2017-3236622.html

http://www.oracle.com/technetwork/security-advisory/cpuoct2016-2881722.html

Third Party Advisory

http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html

http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2016-3090545.html

Third Party Advisory

http://www.oracle.com/technetwork/topics/security/ovmbulletinoct2016-3090547.html

Third Party Advisory

92117

Third Party Advisory

1036486

http://www.splunk.com/view/SP-CAAAPSV

Third Party Advisory

http://www.splunk.com/view/SP-CAAAPUE

Third Party Advisory

http://www-01.ibm.com/support/docview.wss?uid=swg21995039

Third Party Advisory

https://bto.bluecoat.com/security-advisory/sa132

Third Party Advisory

https://bugzilla.redhat.com/show_bug.cgi?id=1359615

Issue Tracking, Patch

https://github.com/openssl/openssl/commit/0ed26acce328ec16a3aa635f1ca37365e8c7403a

Issue Tracking, Patch, Third Party Advisory

https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA40312

Third Party Advisory

FreeBSD-SA-16:26

GLSA-201612-16

Patch, Third Party Advisory, VDB Entry

https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03856en_us

https://www.openssl.org/news/vulnerabilities.html#y2017

Vendor Advisory

https://www.tenable.com/security/tns-2016-16

Third Party Advisory

https://www.tenable.com/security/tns-2016-20

https://www.tenable.com/security/tns-2016-21

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