CVE-2017-7479
published 2017-05-15CVE-2017-7479: OpenVPN versions before 2.3.15 and before 2.4.2 are vulnerable to reachable assertion when packet-ID counter rolls over resulting into Denial of Service of…
PriorityP432medium6.5CVSS 3.0
AVNACLPRLUINSUCNINAH
EPSS
1.87%
77.0th percentile
OpenVPN versions before 2.3.15 and before 2.4.2 are vulnerable to reachable assertion when packet-ID counter rolls over resulting into Denial of Service of server by authenticated attacker.
Affected
12 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | openvpn | < openvpn 2.4.0-5 (bookworm) | openvpn 2.4.0-5 (bookworm) |
| openvpn | openvpn | <= 2.3.14 | — |
| openvpn | openvpn | — | — |
| openvpn | openvpn | — | — |
| openvpn | openvpn | >= 0 < 2.4.0-5 | 2.4.0-5 |
| openvpn | openvpn | >= 0 < 2.4.0-5 | 2.4.0-5 |
| openvpn | openvpn | >= 0 < 2.4.0-5 | 2.4.0-5 |
| openvpn | openvpn | >= 0 < 2.4.0-5 | 2.4.0-5 |
| openvpn | openvpn | >= 0 < 2.3.2-7ubuntu3.2 | 2.3.2-7ubuntu3.2 |
| openvpn | openvpn | >= 0 < 2.3.10-1ubuntu2.1 | 2.3.10-1ubuntu2.1 |
| openvpn_technologies_inc | openvpn | < 2.3.15 | 2.3.15 |
| openvpn_technologies_inc | openvpn | < 2.4.2 | 2.4.2 |
CVSS provenance
nvdv3.06.5MEDIUMCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
nvdv2.04.0MEDIUMAV:N/AC:L/Au:S/C:N/I:N/A:P
osv6.5MEDIUM
vendor_ubuntu7.5HIGH
vendor_debian6.5LOW
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GHSA
GHSA-qhqf-49x5-89w6: OpenVPN versions before 2
ghsa_unreviewed·2022-05-13
CVE-2017-7479 [MEDIUM] CWE-617 GHSA-qhqf-49x5-89w6: OpenVPN versions before 2
OpenVPN versions before 2.3.15 and before 2.4.2 are vulnerable to reachable assertion when packet-ID counter rolls over resulting into Denial of Service of server by authenticated attacker.
OSV
openvpn vulnerabilities
osv·2017-06-22·CVSS 5.9
CVE-2016-6329 [MEDIUM] openvpn vulnerabilities
openvpn vulnerabilities
Karthikeyan Bhargavan and Gaëtan Leurent discovered that 64-bit block
ciphers are vulnerable to a birthday attack. A remote attacker could
possibly use this issue to recover cleartext data. Fixing this issue
requires a configuration change to switch to a different cipher. This
update adds a warning to the log file when a 64-bit block cipher is in use.
This issue only affected Ubuntu 14.04 LTS, Ubuntu 16.04 LTS and
Ubuntu 16.10. (CVE-2016-6329)
It was discovered that OpenVPN incorrectly handled rollover of packet ids.
An authenticated remote attacker could use this issue to cause OpenVPN to
crash, resulting in a denial of service. This issue only affected Ubuntu
14.04 LTS, Ubuntu 16.04 LTS and Ubuntu 16.10. (CVE-2017-7479)
Guido Vranken discovered that OpenVPN inc
OSV
CVE-2017-7479: OpenVPN versions before 2
osv·2017-05-15·CVSS 6.5
CVE-2017-7479 [MEDIUM] CVE-2017-7479: OpenVPN versions before 2
OpenVPN versions before 2.3.15 and before 2.4.2 are vulnerable to reachable assertion when packet-ID counter rolls over resulting into Denial of Service of server by authenticated attacker.
Ubuntu
OpenVPN vulnerabilities
vendor_ubuntu·2017-06-22·CVSS 5.9
CVE-2016-6329 [MEDIUM] OpenVPN vulnerabilities
Title: OpenVPN vulnerabilities
Summary: Several security issues were fixed in OpenVPN.
Karthikeyan Bhargavan and Gaëtan Leurent discovered that 64-bit block
ciphers are vulnerable to a birthday attack. A remote attacker could
possibly use this issue to recover cleartext data. Fixing this issue
requires a configuration change to switch to a different cipher. This
update adds a warning to the log file when a 64-bit block cipher is in use.
This issue only affected Ubuntu 14.04 LTS, Ubuntu 16.04 LTS and
Ubuntu 16.10. (CVE-2016-6329)
It was discovered that OpenVPN incorrectly handled rollover of packet ids.
An authenticated remote attacker could use this issue to cause OpenVPN to
crash, resulting in a denial of service. This issue only affected Ubuntu
14.04 LTS, Ubuntu 16.04 LTS and Ubuntu 1
Ubuntu
OpenVPN vulnerabilities
vendor_ubuntu·2017-05-11·CVSS 7.5
CVE-2017-7478 [HIGH] OpenVPN vulnerabilities
Title: OpenVPN vulnerabilities
Summary: Several security issues were fixed in OpenVPN.
It was discovered that OpenVPN improperly triggered an assert when
receiving an oversized control packet in some situations. A remote
attacker could use this to cause a denial of service (server or client
crash). (CVE-2017-7478)
It was discovered that OpenVPN improperly triggered an assert when packet
ids rolled over. An authenticated remote attacker could use this to cause a
denial of service (application crash). (CVE-2017-7479)
Instructions: In general, a standard system update will make all the necessary changes.
Debian
CVE-2017-7479: openvpn - OpenVPN versions before 2.3.15 and before 2.4.2 are vulnerable to reachable asse...
vendor_debian·2017·CVSS 6.5
CVE-2017-7479 [MEDIUM] CVE-2017-7479: openvpn - OpenVPN versions before 2.3.15 and before 2.4.2 are vulnerable to reachable asse...
OpenVPN versions before 2.3.15 and before 2.4.2 are vulnerable to reachable assertion when packet-ID counter rolls over resulting into Denial of Service of server by authenticated attacker.
Scope: local
bookworm: resolved (fixed in 2.4.0-5)
bullseye: resolved (fixed in 2.4.0-5)
forky: resolved (fixed in 2.4.0-5)
sid: resolved (fixed in 2.4.0-5)
trixie: resolved (fixed in 2.4.0-5)
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2017-7479 openvpn: DoS due to exhaustion of packet-ID counter
bugzilla·2017-05-15·CVSS 6.5
CVE-2017-7479 [MEDIUM] CVE-2017-7479 openvpn: DoS due to exhaustion of packet-ID counter
CVE-2017-7479 openvpn: DoS due to exhaustion of packet-ID counter
An authenticated client can cause the server's the packet-id counter to roll over, which would lead the server process to hit an ASSERT() and stop running.
Upstream fixes:
openvpn 2.3: https://github.com/OpenVPN/openvpn/commit/b727643cdf
openvpn 2.4: https://github.com/OpenVPN/openvpn/commit/591a4e574c
master: https://github.com/OpenVPN/openvpn/commit/e498cb0ea8
External References:
https://community.openvpn.net/openvpn/wiki/QuarkslabAndCryptographyEngineerAudits
Discussion:
Acknowledgments:
Name: the OpenVPN project
Upstream: QuarksLab
---
Updated in Fedora/Fedora EPEL:
* F-24: (in progress, will be updated to 2.3.15)
* F-25: https://bodhi.fedoraproject.org/updates/FEDORA-2017-0d0f18140a
* F-26: https://bodhi.fed
Bugzilla
CVE-2017-7478 CVE-2017-7479 openvpn: various flaws [fedora-all]
bugzilla·2017-05-15·CVSS 7.5
CVE-2017-7478 [HIGH] CVE-2017-7478 CVE-2017-7479 openvpn: various flaws [fedora-all]
CVE-2017-7478 CVE-2017-7479 openvpn: various flaws [fedora-all]
This is an automatically created tracking bug! It was created to ensure
that one or more security vulnerabilities are fixed in affected versions
of fedora-all.
For comments that are specific to the vulnerability please use bugs filed
against the "Security Response" product referenced in the "Blocks" field.
For more information see:
http://fedoraproject.org/wiki/Security/TrackingBugs
When submitting as an update, use the fedpkg template provided in the next
comment(s). This will include the bug IDs of this tracking bug as well as
the relevant top-level CVE bugs.
Please also mention the CVE IDs being fixed in the RPM changelog and the
fedpkg commit message.
NOTE: this issue affects multiple supported versions of Fedora. Wh
Bugzilla
CVE-2017-7478 CVE-2017-7479 openvpn: various flaws [epel-all]
bugzilla·2017-05-15·CVSS 7.5
CVE-2017-7478 [HIGH] CVE-2017-7478 CVE-2017-7479 openvpn: various flaws [epel-all]
CVE-2017-7478 CVE-2017-7479 openvpn: various flaws [epel-all]
This is an automatically created tracking bug! It was created to ensure
that one or more security vulnerabilities are fixed in affected versions
of epel-all.
For comments that are specific to the vulnerability please use bugs filed
against the "Security Response" product referenced in the "Blocks" field.
For more information see:
http://fedoraproject.org/wiki/Security/TrackingBugs
When submitting as an update, use the fedpkg template provided in the next
comment(s). This will include the bug IDs of this tracking bug as well as
the relevant top-level CVE bugs.
Please also mention the CVE IDs being fixed in the RPM changelog and the
fedpkg commit message.
NOTE: this issue affects multiple supported versions of Fedora EPEL. W
http://www.debian.org/security/2017/dsa-3900http://www.securityfocus.com/bid/98443http://www.securitytracker.com/id/1038473https://community.openvpn.net/openvpn/wiki/QuarkslabAndCryptographyEngineerAuditshttp://www.debian.org/security/2017/dsa-3900http://www.securityfocus.com/bid/98443http://www.securitytracker.com/id/1038473https://community.openvpn.net/openvpn/wiki/QuarkslabAndCryptographyEngineerAudits
2017-05-15
Published