Vulnerability Name:

CVE-2020-14354 (CCN-202060)

Assigned:2020-07-22
Published:2020-07-22
Updated:2022-04-26
Summary:A possible use-after-free and double-free in c-ares lib version 1.16.0 if ares_destroy() is called prior to ares_getaddrinfo() completing. This flaw possibly allows an attacker to crash the service that uses c-ares lib. The highest threat from this vulnerability is to this service availability.
CVSS v3 Severity:3.3 Low (CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L)
3.0 Low (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Low
6.2 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
5.6 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Local
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
CVSS v2 Severity:2.1 Low (CVSS v2 Vector: AV:L/AC:L/Au:N/C:N/I:N/A:P)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
Authentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Partial
4.9 Medium (CCN CVSS v2 Vector: AV:L/AC:L/Au:N/C:N/I:N/A:C)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Complete
Vulnerability Type:CWE-415
CWE-416
Vulnerability Consequences:Denial of Service
References:Source: MITRE
Type: CNA
CVE-2020-14354

Source: CCN
Type: Red Hat Bugzilla – Bug 1866838
(CVE-2020-14354) - CVE-2020-14354 c-ares: ares_destroy() with pending ares_getaddrinfo() leads to Use-After-Free

Source: MISC
Type: Exploit, Issue Tracking, Patch, Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1866838

Source: CCN
Type: c-ares Web site
c-ares

Source: MISC
Type: Release Notes, Vendor Advisory
https://c-ares.haxx.se/changelog.html

Source: XF
Type: UNKNOWN
cares-cve202014354-dos(202060)

Source: MISC
Type: Patch, Third Party Advisory
https://github.com/c-ares/c-ares/commit/1cc7e83c3bdfaafbc5919c95025592d8de3a170e

Source: FEDORA
Type: Mailing List, Third Party Advisory
FEDORA-2020-43d5a372fc

Source: MISC
Type: Exploit, Third Party Advisory, VDB Entry
https://packetstormsecurity.com/files/158755/GS20200804145053.txt

Vulnerable Configuration:Configuration 1:
  • cpe:/a:c-ares_project:c-ares:1.16.0:*:*:*:*:*:*:*

    • Configuration 2:
  • cpe:/o:fedoraproject:fedora:33:*:*:*:*:*:*:*

    • Configuration CCN 1:
  • cpe:/a:c-ares_project:c-ares:1.16.0:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    BACK
    c-ares_project c-ares 1.16.0
    fedoraproject fedora 33
    c-ares_project c-ares 1.16.0