9.1 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
5.8 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:P/I:N/A:P
0.002 Low
EPSS
Percentile
52.8%
Debian Security Advisory DSA-5056-1 [email protected]
https://www.debian.org/security/ Yves-Alexis Perez
January 24, 2022 https://www.debian.org/security/faq
Package : strongswan
CVE ID : CVE-2021-45079
Zhuowei Zhang discovered a bug in the EAP authentication client code of
strongSwan, an IKE/IPsec suite, that may allow to bypass the client and in some
scenarios even the server authentication, or could lead to a denial-of-service
attack.
When using EAP authentication (RFC 3748), the successful completion of the
authentication is indicated by an EAP-Success message sent by the server to the
client. strongSwan's EAP client code handled early EAP-Success messages
incorrectly, either crashing the IKE daemon or concluding the EAP method
prematurely.
End result depend on the used configuration, more details can be found in
upstream advisory at
https://www.strongswan.org/blog/2022/01/24/strongswan-vulnerability-(cve-2021-45079).html
For the oldstable distribution (buster), this problem has been fixed
in version 5.7.2-1+deb10u2.
For the stable distribution (bullseye), this problem has been fixed in
version 5.9.1-1+deb11u2.
We recommend that you upgrade your strongswan packages.
For the detailed security status of strongswan please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/strongswan
Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/
Mailing list: [email protected]
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
Debian | 11 | armhf | libstrongswan | < 5.9.1-1+deb11u2 | libstrongswan_5.9.1-1+deb11u2_armhf.deb |
Debian | 10 | mipsel | strongswan-libcharon | < 5.7.2-1+deb10u2 | strongswan-libcharon_5.7.2-1+deb10u2_mipsel.deb |
Debian | 10 | s390x | strongswan-starter | < 5.7.2-1+deb10u2 | strongswan-starter_5.7.2-1+deb10u2_s390x.deb |
Debian | 10 | armel | libcharon-extra-plugins-dbgsym | < 5.7.2-1+deb10u2 | libcharon-extra-plugins-dbgsym_5.7.2-1+deb10u2_armel.deb |
Debian | 10 | mipsel | strongswan-charon | < 5.7.2-1+deb10u2 | strongswan-charon_5.7.2-1+deb10u2_mipsel.deb |
Debian | 10 | armel | strongswan-nm | < 5.7.2-1+deb10u2 | strongswan-nm_5.7.2-1+deb10u2_armel.deb |
Debian | 11 | mips64el | charon-systemd-dbgsym | < 5.9.1-1+deb11u2 | charon-systemd-dbgsym_5.9.1-1+deb11u2_mips64el.deb |
Debian | 11 | s390x | charon-cmd | < 5.9.1-1+deb11u2 | charon-cmd_5.9.1-1+deb11u2_s390x.deb |
Debian | 10 | armhf | strongswan-scepclient-dbgsym | < 5.7.2-1+deb10u2 | strongswan-scepclient-dbgsym_5.7.2-1+deb10u2_armhf.deb |
Debian | 10 | i386 | libstrongswan-dbgsym | < 5.7.2-1+deb10u2 | libstrongswan-dbgsym_5.7.2-1+deb10u2_i386.deb |
9.1 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
5.8 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:P/I:N/A:P
0.002 Low
EPSS
Percentile
52.8%