Vulnerability Name:

CVE-2019-20352 (CCN-174008)

Assigned:2019-12-08
Published:2019-12-08
Updated:2020-07-13
Summary:In Netwide Assembler (NASM) 2.15rc0, a heap-based buffer over-read occurs (via a crafted .asm file) in set_text_free when called from expand_one_smacro in asm/preproc.c.
CVSS v3 Severity:7.1 High (CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H)
6.3 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/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): High
Integrity (I): None
Availibility (A): High
7.8 High (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H)
6.9 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/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): High
Integrity (I): High
Availibility (A): High
CVSS v2 Severity:5.8 Medium (CVSS v2 Vector: AV:N/AC:M/Au:N/C:P/I:N/A:P)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Medium
Authentication (Au): None
Impact Metrics:Confidentiality (C): Partial
Integrity (I): None
Availibility (A): Partial
6.8 Medium (CCN CVSS v2 Vector: AV:L/AC:L/Au:S/C:C/I:C/A:C)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
Athentication (Au): Single_Instance
Impact Metrics:Confidentiality (C): Complete
Integrity (I): Complete
Availibility (A): Complete
Vulnerability Type:CWE-125
Vulnerability Consequences:Gain Access
References:Source: MITRE
Type: CNA
CVE-2019-20352

Source: CCN
Type: Bugzilla – Bug 3392636
Heap-buffer-overflow in preproc.c

Source: MISC
Type: Exploit, Issue Tracking, Vendor Advisory
https://bugzilla.nasm.us/show_bug.cgi?id=3392636

Source: XF
Type: UNKNOWN
nasm-cve201920352-bo(174008)

Source: CCN
Type: NASM Web site
NASM

Vulnerable Configuration:Configuration 1:
  • cpe:/a:nasm:netwide_assembler:2.15:rc0:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:com.ubuntu.disco:def:2019203520000000
    V
    		CVE-2019-20352 on Ubuntu 19.04 (disco) - medium.
    2020-01-06
    oval:com.ubuntu.bionic:def:2019203520000000
    V
    		CVE-2019-20352 on Ubuntu 18.04 LTS (bionic) - medium.
    2020-01-06
    oval:com.ubuntu.xenial:def:2019203520000000
    V
    		CVE-2019-20352 on Ubuntu 16.04 LTS (xenial) - medium.
    2020-01-06
    BACK
    nasm netwide assembler 2.15 rc0