Vulnerability Name:

CVE-2020-24241 (CCN-187367)

Assigned:2020-07-30
Published:2020-07-30
Updated:2020-09-04
Summary:In Netwide Assembler (NASM) 2.15rc10, there is heap use-after-free in saa_wbytes in nasmlib/saa.c.
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)
4.8 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:O/RC:C)
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
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: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
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-416
Vulnerability Consequences:Denial of Service
References:Source: MITRE
Type: CNA
CVE-2020-24241

Source: CCN
Type: Bugzilla – Bug 3392707
heap-use-after-free in saa_wbytes nasmlib/saa.c:132

Source: MISC
Type: Exploit, Issue Tracking, Vendor Advisory
https://bugzilla.nasm.us/show_bug.cgi?id=3392707

Source: XF
Type: UNKNOWN
nasm-cve202024241-dos(187367)

Source: CCN
Type: nasm GIT Repository
nasm

Vulnerable Configuration:Configuration 1:
  • cpe:/a:nasm:netwide_assembler:2.15:rc10:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    BACK
    nasm netwide assembler 2.15 rc10