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Home CVE Database CVE-2021-3618

CVE-2021-3618

Description

ALPACA is an application layer protocol content confusion attack, exploiting TLS servers implementing different protocols but using compatible certificates, such as multi-domain or wildcard certificates. A MiTM attacker having access to victim\'s traffic at the TCP/IP layer can redirect traffic from one subdomain to another, resulting in a valid TLS session. This breaks the authentication of TLS and cross-protocol attacks may be possible where the behavior of one protocol service may compromise the other at the application layer.

Priority: MEDIUM
CVSS v3: 7.4
Component: vsftpd&nginx
Publish Date: Aug 31, 2021
Related ID: --
CVSS v2: HIGH
Modified Date: Aug 31, 2021

Find out more about CVE-2021-3618 from the MITRE-CVE dictionary and NIST NVD


Products Affected

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Product Name Status Defect Fixed Downloads
Linux
Wind River Linux LTS 17 Fixed LIN10-8883
10.17.41.26 --
Wind River Linux 8 Requires LTSS -- -- --
Wind River Linux 9 Requires LTSS -- -- --
Wind River Linux 7 Requires LTSS -- -- --
Wind River Linux LTS 21 Fixed LIN1021-866
LIN1021-865
10.21.20.6 --
Wind River Linux LTS 22 Not Vulnerable -- -- --
Wind River Linux LTS 18 Fixed LIN1018-7945
LIN1018-7947
10.18.44.27 --
Wind River Linux LTS 19 Fixed LIN1019-6866
LIN1019-6869
10.19.45.24 --
Wind River Linux CD release Fixed LINCD-6108
10.21.37.0 --
Wind River Linux 6 Requires LTSS -- -- --
Wind River Linux LTS 23 Not Vulnerable -- -- --
VxWorks
VxWorks 7 Not Vulnerable -- -- --
VxWorks 6.9 Not Vulnerable -- -- --
Helix Virtualization Platform Cert Edition
Helix Virtualization Platform Cert Edition Not Vulnerable -- -- --

Related Products

Product Name Status Defect Fixed Downloads

Notes
Requires LTSS - customers must have active LTSS (Long Term Security Shield) Support to receive up-to-date information about vulnerabilities that may affect legacy software. Please contact your Wind River account team or see https://docs.windriver.com/bundle/Support_and_Maintenance_Supplemental_Terms_and_Conditions and https://support2.windriver.com/index.php?page=plc for more information.
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