CVE-2020-14354 — Classic Buffer Overflow in C-ares

CWE-120 — Classic Buffer OverflowCWE-415 — Double FreeCWE-416 — Use After Free7 documents6 sources
Severity
3.3LOWNVD
EPSS
0.2%
top 59.61%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
3
C-aresDebian C-aresFedoraproject Fedora
Timeline
PublishedMay 13
Latest updateMay 24

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.

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:LExploitability: 1.8 | Impact: 1.4

Affected Packages4 packages

▶debiandebian/c-ares< c-ares 1.16.1-1 (bookworm)
▶Debianc-ares/c-ares< 1.16.1-1+3
▶CVEListV5c-ares/c-aresc-ares 1.16.1
▶NVDc-ares/c-ares1.16.0

Also affects: Fedora 33

Patches

Patch: bugzilla.redhat.com ↗Patch: github.com ↗Patch: bugzilla.redhat.com ↗

🔴Vulnerability Details

2
GHSA
GHSA-xxmg-3gv9-85h2: A possible use-after-free and double-free in c-ares lib version 1↗2022-05-24
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OSV
CVE-2020-14354: A possible use-after-free and double-free in c-ares lib version 1↗2021-05-13
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📋Vendor Advisories

2
Red Hat
c-ares: ares_destroy() with pending ares_getaddrinfo() leads to Use-After-Free↗2020-08-02
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Debian
CVE-2020-14354: c-ares - A possible use-after-free and double-free in c-ares lib version 1.16.0 if ares_d...↗2020
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💬Community

2
Bugzilla
CVE-2020-14354 c-ares: ares_destroy() with pending ares_getaddrinfo() leads to Use-After-Free↗2020-08-06
▶
Bugzilla
CVE-2020-14354 nodejs: c-ares: ares_destroy() with pending ares_getaddrinfo() leads to Use-After-Free [fedora-all]↗2020-08-06
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CVE-2020-14354 — Classic Buffer Overflow in C-ares | cvebase