Vulnerability CVE-2016-4021

Vulnerability Name:

CVE-2016-4021 (CCN-112338)

Assigned:

2016-04-18

Published:

2016-04-18

Updated:

2016-06-15

Summary:

The read_binary function in buffer.c in pgpdump before 0.30 allows context-dependent attackers to cause a denial of service (infinite loop and CPU consumption) via crafted input, as demonstrated by the \xa3\x03 string.

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:

7.8 High (CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:N/A:C)

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

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-399

Vulnerability Consequences:

Denial of Service

References:

Source: MITRE
Type: CNA
CVE-2016-4021

Source: FEDORA
Type: UNKNOWN
FEDORA-2016-8f4b54b005

Source: FEDORA
Type: UNKNOWN
FEDORA-2016-6fd7a31d36

Source: FEDORA
Type: UNKNOWN
FEDORA-2016-5733ad20f5

Source: BUGTRAQ
Type: Exploit
20160418 CVE-2016-4021: pgpdump 0.29 - Endless loop parsing specially crafted input (SYSS-2016-030)

Source: CCN
Type: BugTraq Mailing List, Mon, 18 Apr 2016 16:16:45 GMT
CVE-2016-4021: pgpdump 0.29 - Endless loop parsing specially crafted input (SYSS-2016-030)

Source: CCN
Type: pgpdump Web site
pgpdump

Source: XF
Type: UNKNOWN
pgpdump-cve20164021-dos(112338)

Source: CONFIRM
Type: UNKNOWN
https://github.com/kazu-yamamoto/pgpdump/pull/16

Source: CCN
Type: Packet Storm Security [04-18-2016]
TH692 Outdoor P2P HD Waterproof IP Camera Hard-Coded Credentials

Source: MISC
Type: Exploit
https://www.syss.de/fileadmin/dokumente/Publikationen/Advisories/SYSS-2016-030.txt

Source: CCN
Type: WhiteSource Vulnerability Database
CVE-2016-4021

Vulnerable Configuration:

Configuration 1:

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

OR cpe:/o:fedoraproject:fedora:23:*:*:*:*:*:*:*

OR cpe:/o:fedoraproject:fedora:24:*:*:*:*:*:*:*

Configuration 2:

cpe:/a:pgpdump_project:pgpdump:*:*:*:*:*:*:*:* (Version <= 0.29)

Configuration CCN 1:

cpe:/a:pgpdump:pgpdump:0.29:*:*:*:*:*:*:*

Denotes that component is vulnerable

Oval Definitions

Definition ID	Class	Title	Last Modified
oval:com.ubuntu.bionic:def:201640210000000	V	CVE-2016-4021 on Ubuntu 18.04 LTS (bionic) - low.	2016-05-26
oval:com.ubuntu.artful:def:20164021000	V	CVE-2016-4021 on Ubuntu 17.10 (artful) - low.	2016-05-26
oval:com.ubuntu.trusty:def:20164021000	V	CVE-2016-4021 on Ubuntu 14.04 LTS (trusty) - low.	2016-05-26
oval:com.ubuntu.xenial:def:201640210000000	V	CVE-2016-4021 on Ubuntu 16.04 LTS (xenial) - low.	2016-05-26
oval:com.ubuntu.bionic:def:20164021000	V	CVE-2016-4021 on Ubuntu 18.04 LTS (bionic) - low.	2016-05-26
oval:com.ubuntu.xenial:def:20164021000	V	CVE-2016-4021 on Ubuntu 16.04 LTS (xenial) - low.	2016-05-26
oval:com.ubuntu.disco:def:201640210000000	V	CVE-2016-4021 on Ubuntu 19.04 (disco) - low.	2016-05-26
oval:com.ubuntu.cosmic:def:20164021000	V	CVE-2016-4021 on Ubuntu 18.10 (cosmic) - low.	2016-05-26
oval:com.ubuntu.cosmic:def:201640210000000	V	CVE-2016-4021 on Ubuntu 18.10 (cosmic) - low.	2016-05-26
oval:com.ubuntu.precise:def:20164021000	V	CVE-2016-4021 on Ubuntu 12.04 LTS (precise) - low.	2016-05-26

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