CVE-2021-3618

Name
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.
NVD Severity
medium
Other trackers
CVE, NVD, CERT, CVE Details, CIRCL, Arch Linux, Debian, Red Hat, Ubuntu, Gentoo, SUSE (Bugzilla), SUSE (CVE), Mageia
Mailing lists
oss-security, full-disclosure, bugtraq
Exploits
Exploit DB, Metasploit
Forges
GitHub (code, issues), Aports (code, issues)

References

Type URI
MISC https://bugzilla.redhat.com/show_bug.cgi?id=1975623
MISC https://ubuntu.com/security/CVE-2021-3618
MISC https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=991328
MISC https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=991329
MISC https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=991331
MISC https://github.com/nginx/nginx/commit/173f16f736c10eae46cd15dd861b04b82d91a37a

Match rules

CPE URI Source package Min version Max version
cpe:2.3:a:f5:nginx:*:*:*:*:*:*:*:* nginx >= None < 1.21.0

Vulnerable and fixed packages

Source package Branch Version Maintainer Status
nginx edge-main 1.20.2-r2 Jakub Jirutka <jakub@jirutka.cz> fixed
nginx edge-main 1.20.2-r1 Jakub Jirutka <jakub@jirutka.cz> fixed
nginx edge-main 1.20.1-r1 Jakub Jirutka <jakub@jirutka.cz> fixed
nginx edge-main 1.20.1-r0 Jakub Jirutka <jakub@jirutka.cz> possibly vulnerable
nginx edge-main 1.16.1-r6 None possibly vulnerable
nginx edge-main 1.16.1-r0 None possibly vulnerable
nginx edge-main 1.14.1-r0 None possibly vulnerable
nginx edge-main 1.12.1-r0 None possibly vulnerable
nginx 3.22-main 1.20.2-r2 None fixed
nginx 3.22-main 1.20.1-r1 None fixed
nginx 3.22-main 1.20.1-r0 None possibly vulnerable
nginx 3.22-main 1.16.1-r6 None possibly vulnerable
nginx 3.22-main 1.16.1-r0 None possibly vulnerable
nginx 3.22-main 1.14.1-r0 None possibly vulnerable
nginx 3.22-main 1.12.1-r0 None possibly vulnerable
nginx 3.21-main 1.20.2-r2 None fixed
nginx 3.21-main 1.20.1-r1 None fixed
nginx 3.21-main 1.20.1-r0 None possibly vulnerable
nginx 3.21-main 1.16.1-r6 None possibly vulnerable
nginx 3.21-main 1.16.1-r0 None possibly vulnerable
nginx 3.21-main 1.14.1-r0 None possibly vulnerable
nginx 3.21-main 1.12.1-r0 None possibly vulnerable
nginx 3.20-main 1.20.2-r2 None fixed
nginx 3.20-main 1.20.1-r1 None fixed
nginx 3.20-main 1.20.1-r0 None possibly vulnerable
nginx 3.20-main 1.16.1-r6 None possibly vulnerable
nginx 3.20-main 1.16.1-r0 None possibly vulnerable
nginx 3.20-main 1.14.1-r0 None possibly vulnerable
nginx 3.20-main 1.12.1-r0 None possibly vulnerable
nginx 3.19-main 1.20.2-r2 None fixed
nginx 3.19-main 1.20.1-r1 None fixed
nginx 3.19-main 1.20.1-r0 None possibly vulnerable
nginx 3.19-main 1.16.1-r6 None possibly vulnerable
nginx 3.19-main 1.16.1-r0 None possibly vulnerable
nginx 3.19-main 1.14.1-r0 None possibly vulnerable
nginx 3.19-main 1.12.1-r0 None possibly vulnerable
nginx 3.18-main 1.20.1-r1 None fixed
nginx 3.17-main 1.20.1-r1 None fixed
nginx 3.12-main 1.18.0-r3 Jakub Jirutka <jakub@jirutka.cz> possibly vulnerable