Vulnerability CVE-2015-1783

Vulnerability Name:

CVE-2015-1783 (CCN-131033)

Assigned:

2015-02-17

Published:

2017-08-11

Updated:

2017-08-24

Summary:

The prefix variable in the get_or_define_ns function in Lasso before commit 6d854cef4211cdcdbc7446c978f23ab859847cdd allows remote attackers to cause a denial of service (uninitialized memory access and application crash) via unspecified vectors.

CVSS v3 Severity:

7.5 High (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
6.5 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C)

Exploitability Metrics:	Attack Vector (AV): Network Attack Complexity (AC): Low Privileges Required (PR): None User Interaction (UI): None
Scope:	Scope (S): Unchanged
Impact Metrics:	Confidentiality (C): None Integrity (I): None Availibility (A): High

5.3 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L)
4.6 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C)

Exploitability Metrics:	Attack Vector (AV): Network Attack Complexity (AC): Low Privileges Required (PR): None User Interaction (UI): None
Scope:	Scope (S): Unchanged
Impact Metrics:	Confidentiality (C): None Integrity (I): None Availibility (A): Low

CVSS v2 Severity:

5.0 Medium (CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P)

Exploitability Metrics:	Access Vector (AV): Network Access Complexity (AC): Low Authentication (Au): None
Impact Metrics:	Confidentiality (C): None Integrity (I): None Availibility (A): Partial

5.0 Medium (CCN CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P)

Exploitability Metrics:	Access Vector (AV): Network Access Complexity (AC): Low Athentication (Au): None
Impact Metrics:	Confidentiality (C): None Integrity (I): None Availibility (A): Partial

Vulnerability Type:

CWE-119

Vulnerability Consequences:

Denial of Service

References:

Source: MITRE
Type: CNA
CVE-2015-1783

Source: CCN
Type: Lasso Web site
Lasso - Free Liberty Alliance Single Sign On

Source: FEDORA
Type: Third Party Advisory
FEDORA-2015-4848

Source: FEDORA
Type: Third Party Advisory
FEDORA-2015-4807

Source: FEDORA
Type: Third Party Advisory
FEDORA-2015-4821

Source: CCN
Type: Red Hat Bugzilla Bug 1199925
(CVE-2015-1783) CVE-2015-1783 lasso: use of uninitialized value leading to a crash

Source: CONFIRM
Type: Issue Tracking, Patch, Third Party Advisory, VDB Entry
https://bugzilla.redhat.com/show_bug.cgi?id=1199925

Source: XF
Type: UNKNOWN
lasso-cve20151783-dos(131033)

Source: MISC
Type: Patch, Third Party Advisory
https://repos.entrouvert.org/lasso.git/commit/lasso/xml?id=6d854cef4211cdcdbc7446c978f23ab859847cdd

Vulnerable Configuration:

Configuration 1:

cpe:/o:fedoraproject:fedora:20:*:*:*:*:*:*:*

OR cpe:/o:fedoraproject:fedora:21:*:*:*:*:*:*:*

OR cpe:/o:fedoraproject:fedora:22:*:*:*:*:*:*:*

Configuration 2:

cpe:/a:entrouvert:lasso:*:*:*:*:*:*:*:* (Version <= 2.4.0)

Denotes that component is vulnerable

Oval Definitions

Definition ID	Class	Title	Last Modified
oval:com.ubuntu.bionic:def:201517830000000	V	CVE-2015-1783 on Ubuntu 18.04 LTS (bionic) - medium.	2017-08-11
oval:com.ubuntu.artful:def:20151783000	V	CVE-2015-1783 on Ubuntu 17.10 (artful) - medium.	2017-08-11
oval:com.ubuntu.trusty:def:20151783000	V	CVE-2015-1783 on Ubuntu 14.04 LTS (trusty) - medium.	2017-08-11
oval:com.ubuntu.xenial:def:201517830000000	V	CVE-2015-1783 on Ubuntu 16.04 LTS (xenial) - medium.	2017-08-11
oval:com.ubuntu.bionic:def:20151783000	V	CVE-2015-1783 on Ubuntu 18.04 LTS (bionic) - medium.	2017-08-11
oval:com.ubuntu.xenial:def:20151783000	V	CVE-2015-1783 on Ubuntu 16.04 LTS (xenial) - medium.	2017-08-11
oval:com.ubuntu.disco:def:201517830000000	V	CVE-2015-1783 on Ubuntu 19.04 (disco) - medium.	2017-08-11
oval:com.ubuntu.cosmic:def:20151783000	V	CVE-2015-1783 on Ubuntu 18.10 (cosmic) - medium.	2017-08-11
oval:com.ubuntu.cosmic:def:201517830000000	V	CVE-2015-1783 on Ubuntu 18.10 (cosmic) - medium.	2017-08-11
oval:com.ubuntu.precise:def:20151783000	V	CVE-2015-1783 on Ubuntu 12.04 LTS (precise) - medium.	2015-03-10

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