LOW
CVE-2020-14354
CWE-120Published: May 13, 2021· Updated: Jun 17, 2026
3.3
CVSS v3.1
Official Description
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.
Technical Analysis
CVE-2020-14354 requires local access, meaning attackers must already have a foothold on the target system.
Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.
CVSS v3.1 Vector Breakdown
Exploitability
Attack VectorLocal
Attack ComplexityLow
Privileges Req.Low
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityNone
AvailabilityLow
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Affected Vendors & Products
Exploit & PoC Resources
NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.
Official Patches & Advisories
All References (10)
→
https://bugzilla.redhat.com/show_bug.cgi?id=1866838Exploit · Issue Tracking · Patch · Third Party Advisory
→
https://c-ares.haxx.se/changelog.htmlRelease Notes · Vendor Advisory
→
https://github.com/c-ares/c-ares/commit/1cc7e83c3bdfaafbc5919c95025592d8de3a170ePatch · Third Party Advisory
→
https://packetstormsecurity.com/files/158755/GS20200804145053.txtExploit · Third Party Advisory · VDB Entry
→
https://bugzilla.redhat.com/show_bug.cgi?id=1866838Exploit · Issue Tracking · Patch · Third Party Advisory
→
https://c-ares.haxx.se/changelog.htmlRelease Notes · Vendor Advisory
→
https://github.com/c-ares/c-ares/commit/1cc7e83c3bdfaafbc5919c95025592d8de3a170ePatch · Third Party Advisory
→
https://packetstormsecurity.com/files/158755/GS20200804145053.txtExploit · Third Party Advisory · VDB Entry
Quick Facts
CVE IDCVE-2020-14354
CVSS Score3.3 / 10
SeverityLOW
WeaknessCWE-120
CISA KEVNo
Affected2 vendor(s)
PublishedMay 13, 2021
Related CVEs (CWE-120)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2020-14354 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.