Cyber Resilience

CVE-2021-3449

Medium

Published: 25 March 2021

Published
25 March 2021
Modified
21 November 2024
KEV Added
—
Patch
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CVSS Score v3.1 5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS Score 0.0986 93.2th percentile
Risk Priority 18 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2021-3449 is a medium-severity NULL Pointer Dereference (CWE-476) vulnerability in Nodejs Node.Js. Its CVSS base score is 5.9 (Medium).

Operationally, ranked in the top 6.8% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

An OpenSSL TLS server may crash if sent a maliciously crafted renegotiation ClientHello message from a client. If a TLSv1.2 renegotiation ClientHello omits the signature_algorithms extension (where it was present in the initial ClientHello), but includes a signature_algorithms_cert extension then…

more

a NULL pointer dereference will result, leading to a crash and a denial of service attack. A server is only vulnerable if it has TLSv1.2 and renegotiation enabled (which is the default configuration). OpenSSL TLS clients are not impacted by this issue. All OpenSSL 1.1.1 versions are affected by this issue. Users of these versions should upgrade to OpenSSL 1.1.1k. OpenSSL 1.0.2 is not impacted by this issue. Fixed in OpenSSL 1.1.1k (Affected 1.1.1-1.1.1j).

CWE(s)
CWE-476

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

openssl
openssl
1.1.1 — 1.1.1k
debian
debian linux
10.0, 9.0
freebsd
freebsd
12.2
netapp
active iq unified manager
all versions
netapp
cloud volumes ontap mediator
all versions
netapp
e-series performance analyzer
all versions
netapp
oncommand insight
all versions
netapp
oncommand workflow automation
all versions
netapp
ontap select deploy administration utility
all versions
netapp
santricity smi-s provider
all versions
+96 more product configuration(s) — see NVD for full list

Mitigating Controls

No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.

References