5 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:N/I:N/A:P
7.5 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
7.6 High
AI Score
Confidence
High
0.017 Low
EPSS
Percentile
87.8%
Debian Security Advisory DSA-3900-1 [email protected]
https://www.debian.org/security/ Sebastien Delafond
June 27, 2017 https://www.debian.org/security/faq
Package : openvpn
CVE ID : CVE-2017-7479 CVE-2017-7508 CVE-2017-7520 CVE-2017-7521
Debian Bug : 865480
Several issues were discovered in openvpn, a virtual private network
application.
CVE-2017-7479
It was discovered that openvpn did not properly handle the
rollover of packet identifiers. This would allow an authenticated
remote attacker to cause a denial-of-service via application
crash.
CVE-2017-7508
Guido Vranken discovered that openvpn did not properly handle
specific malformed IPv6 packets. This would allow a remote
attacker to cause a denial-of-service via application crash.
CVE-2017-7520
Guido Vranken discovered that openvpn did not properly handle
clients connecting to an HTTP proxy with NTLMv2
authentication. This would allow a remote attacker to cause a
denial-of-service via application crash, or potentially leak
sensitive information like the user's proxy password.
CVE-2017-7521
Guido Vranken discovered that openvpn did not properly handle
some x509 extensions. This would allow a remote attacker to cause
a denial-of-service via application crash.
For the oldstable distribution (jessie), these problems have been fixed
in version 2.3.4-5+deb8u2.
For the stable distribution (stretch), these problems have been fixed in
version 2.4.0-6+deb9u1.
For the testing distribution (buster), these problems have been fixed
in version 2.4.3-1.
For the unstable distribution (sid), these problems have been fixed in
version 2.4.3-1.
We recommend that you upgrade your openvpn packages.
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 | 8 | powerpc | openvpn | < 2.3.4-5+deb8u2 | openvpn_2.3.4-5+deb8u2_powerpc.deb |
Debian | 9 | ppc64el | openvpn-dbgsym | < 2.4.0-6+deb9u1 | openvpn-dbgsym_2.4.0-6+deb9u1_ppc64el.deb |
Debian | 8 | ppc64el | openvpn | < 2.3.4-5+deb8u2 | openvpn_2.3.4-5+deb8u2_ppc64el.deb |
Debian | 9 | mips64el | openvpn | < 2.4.0-6+deb9u1 | openvpn_2.4.0-6+deb9u1_mips64el.deb |
Debian | 9 | armel | openvpn | < 2.4.0-6+deb9u1 | openvpn_2.4.0-6+deb9u1_armel.deb |
Debian | 8 | armel | openvpn | < 2.3.4-5+deb8u2 | openvpn_2.3.4-5+deb8u2_armel.deb |
Debian | 9 | ppc64el | openvpn | < 2.4.0-6+deb9u1 | openvpn_2.4.0-6+deb9u1_ppc64el.deb |
Debian | 9 | armhf | openvpn-dbgsym | < 2.4.0-6+deb9u1 | openvpn-dbgsym_2.4.0-6+deb9u1_armhf.deb |
Debian | 9 | mips | openvpn-dbgsym | < 2.4.0-6+deb9u1 | openvpn-dbgsym_2.4.0-6+deb9u1_mips.deb |
Debian | 9 | arm64 | openvpn-dbgsym | < 2.4.0-6+deb9u1 | openvpn-dbgsym_2.4.0-6+deb9u1_arm64.deb |
5 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:N/I:N/A:P
7.5 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
7.6 High
AI Score
Confidence
High
0.017 Low
EPSS
Percentile
87.8%