Vulnerability CVE-2019-7147

Vulnerability Name:

CVE-2019-7147 (CCN-156277)

Assigned:

2019-01-11

Published:

2019-01-11

Updated:

2020-08-24

Summary:

A buffer over-read exists in the function crc64ib in crc64.c in nasmlib in Netwide Assembler (NASM) 2.14rc16. A crafted asm input can cause segmentation faults, leading to denial-of-service.

CVSS v3 Severity:

5.5 Medium (CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H)
4.9 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H/E:U/RL:U/RC:R)

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

3.3 Low (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L)
2.9 Low (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L/E:U/RL:U/RC:R)

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

CVSS v2 Severity:

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

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

1.7 Low (CCN CVSS v2 Vector: AV:L/AC:L/Au:S/C:N/I:N/A:P)

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

Vulnerability Type:

CWE-125

Vulnerability Consequences:

Denial of Service

References:

Source: MITRE
Type: CNA
CVE-2019-7147

Source: CCN
Type: Bugzilla Bug 3392544
Global-buffer-overflow problem in function crc64ib in crc64.c

Source: MISC
Type: Exploit, Issue Tracking, Third Party Advisory
https://bugzilla.nasm.us/show_bug.cgi?id=3392544

Source: XF
Type: UNKNOWN
nasm-cve20197147-dos(156277)

Source: CCN
Type: NASM Web site
Netwide Assembler (NASM)

Vulnerable Configuration:

Configuration 1:

cpe:/a:nasm:netwide_assembler:2.14:rc16:*:*:*:*:*:*

Denotes that component is vulnerable

Oval Definitions

Definition ID	Class	Title	Last Modified
oval:com.ubuntu.disco:def:201971470000000	V	CVE-2019-7147 on Ubuntu 19.04 (disco) - low.	2019-01-29
oval:com.ubuntu.bionic:def:201971470000000	V	CVE-2019-7147 on Ubuntu 18.04 LTS (bionic) - low.	2019-01-29
oval:com.ubuntu.xenial:def:201971470000000	V	CVE-2019-7147 on Ubuntu 16.04 LTS (xenial) - low.	2019-01-29
oval:com.ubuntu.bionic:def:20197147000	V	CVE-2019-7147 on Ubuntu 18.04 LTS (bionic) - low.	2019-01-28
oval:com.ubuntu.cosmic:def:201971470000000	V	CVE-2019-7147 on Ubuntu 18.10 (cosmic) - low.	2019-01-28
oval:com.ubuntu.cosmic:def:20197147000	V	CVE-2019-7147 on Ubuntu 18.10 (cosmic) - low.	2019-01-28
oval:com.ubuntu.trusty:def:20197147000	V	CVE-2019-7147 on Ubuntu 14.04 LTS (trusty) - low.	2019-01-28
oval:com.ubuntu.xenial:def:20197147000	V	CVE-2019-7147 on Ubuntu 16.04 LTS (xenial) - low.	2019-01-28

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