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ubuntucveUbuntu.comUB:CVE-2018-20535
HistoryDec 28, 2018 - 12:00 a.m.

CVE-2018-20535

2018-12-2800:00:00
ubuntu.com
ubuntu.com
14
nasm 2.14rc16
use-after-free
denial of service

CVSS2

4.3

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

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

CVSS3

5.5

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

EPSS

0.001

Percentile

30.8%

There is a use-after-free at asm/preproc.c (function pp_getline) in Netwide
Assembler (NASM) 2.14rc16 that will cause a denial of service during a
line-number increment attempt.

Bugs

Notes

Author Note
mdeslaur no fix as of 2019-04-25
OSVersionArchitecturePackageVersionFilename
ubuntu18.04noarchnasm< anyUNKNOWN
ubuntu20.04noarchnasm< anyUNKNOWN
ubuntu16.04noarchnasm< anyUNKNOWN

CVSS2

4.3

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

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

CVSS3

5.5

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

EPSS

0.001

Percentile

30.8%