CVE-2017-7521
published 2017-06-27CVE-2017-7521: OpenVPN versions before 2.4.3 and before 2.3.17 are vulnerable to remote denial-of-service due to memory exhaustion caused by memory leaks and double-free…
PriorityP429medium5.9CVSS 3.0
AVNACHPRNUINSUCNINAH
EPSS
3.85%
89.0th percentile
OpenVPN versions before 2.4.3 and before 2.3.17 are vulnerable to remote denial-of-service due to memory exhaustion caused by memory leaks and double-free issue in extract_x509_extension().
Affected
13 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | openvpn | < openvpn 2.4.3-1 (bookworm) | openvpn 2.4.3-1 (bookworm) |
| openvpn | openvpn | <= 2.3.16 | — |
| openvpn | openvpn | — | — |
| openvpn | openvpn | — | — |
| openvpn | openvpn | — | — |
| openvpn | openvpn | >= 0 < 2.4.3-1 | 2.4.3-1 |
| openvpn | openvpn | >= 0 < 2.4.3-1 | 2.4.3-1 |
| openvpn | openvpn | >= 0 < 2.4.3-1 | 2.4.3-1 |
| openvpn | openvpn | >= 0 < 2.4.3-1 | 2.4.3-1 |
| 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 | — | — |
| openvpn_technologies_inc | openvpn | — | — |
CVSS provenance
nvdv3.05.9MEDIUMCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
nvdv2.04.3MEDIUMAV:N/AC:M/Au:N/C:N/I:N/A:P
osv5.9MEDIUM
vendor_redhat9.8CRITICAL
vendor_debian5.9MEDIUM
vendor_ubuntu5.9MEDIUM
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GHSA
GHSA-mmxr-6344-9fv5: OpenVPN versions before 2
ghsa_unreviewed·2022-05-13
CVE-2017-7521 [MEDIUM] CWE-400 GHSA-mmxr-6344-9fv5: OpenVPN versions before 2
OpenVPN versions before 2.4.3 and before 2.3.17 are vulnerable to remote denial-of-service due to memory exhaustion caused by memory leaks and double-free issue in extract_x509_extension().
GHSA
GHSA-6574-p8rp-gxqh: Red Hat 3scale (aka RH-3scale) API Management Platform (AMP) before 2
ghsa_unreviewed·2022-05-13·CVSS 9.8
CVE-2017-7512 [CRITICAL] CWE-863 GHSA-6574-p8rp-gxqh: Red Hat 3scale (aka RH-3scale) API Management Platform (AMP) before 2
Red Hat 3scale (aka RH-3scale) API Management Platform (AMP) before 2.0.0 would permit creation of an access token without a client secret. An attacker could use this flaw to circumvent authentication controls and gain access to restricted APIs. NOTE: some sources have a typo in which CVE-2017-7512 maps to an OpenVPN vulnerability. The proper CVE ID for that OpenVPN vulnerability is CVE-2017-7521. Specifically, CVE-2017-7521 is the correct CVE ID for TWO closely related findings in OpenVPN. Any source that lists BOTH CVE-2017-7512 and CVE-2017-7521 for OpenVPN should have listed ONLY CVE-2017-7521.
OSV
CVE-2017-7521: OpenVPN versions before 2
osv·2017-06-27·CVSS 5.9
CVE-2017-7521 [MEDIUM] CVE-2017-7521: OpenVPN versions before 2
OpenVPN versions before 2.4.3 and before 2.3.17 are vulnerable to remote denial-of-service due to memory exhaustion caused by memory leaks and double-free issue in extract_x509_extension().
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
Red Hat
AMP: validation bypass in oauth
vendor_redhat·2017-07-06·CVSS 9.8
CVE-2017-7512 [CRITICAL] CWE-863 AMP: validation bypass in oauth
AMP: validation bypass in oauth
Red Hat 3scale (aka RH-3scale) API Management Platform (AMP) before 2.0.0 would permit creation of an access token without a client secret. An attacker could use this flaw to circumvent authentication controls and gain access to restricted APIs. NOTE: some sources have a typo in which CVE-2017-7512 maps to an OpenVPN vulnerability. The proper CVE ID for that OpenVPN vulnerability is CVE-2017-7521. Specifically, CVE-2017-7521 is the correct CVE ID for TWO closely related findings in OpenVPN. Any source that lists BOTH CVE-2017-7512 and CVE-2017-7521 for OpenVPN should have listed ONLY CVE-2017-7521.
It was found that RH-3scale AMP would permit creation of an access token without a client secret. An attacker could use this flaw to circumvent authentication c
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
Red Hat
openvpn: Multiple security issues fixed in OpenVPN 2.4.3 and 2.3.17
vendor_redhat·2017-06-21·CVSS 5.9
CVE-2017-7521 [MEDIUM] openvpn: Multiple security issues fixed in OpenVPN 2.4.3 and 2.3.17
openvpn: Multiple security issues fixed in OpenVPN 2.4.3 and 2.3.17
OpenVPN versions before 2.4.3 and before 2.3.17 are vulnerable to remote denial-of-service due to memory exhaustion caused by memory leaks and double-free issue in extract_x509_extension().
Statement: This issue does not affect Red Hat Enterprise Linux 5, 6 and 7 as OpenVPN is not included in any of Red Hat's supported products.
Debian
CVE-2017-7521: openvpn - OpenVPN versions before 2.4.3 and before 2.3.17 are vulnerable to remote denial-...
vendor_debian·2017·CVSS 5.9
CVE-2017-7521 [MEDIUM] CVE-2017-7521: openvpn - OpenVPN versions before 2.4.3 and before 2.3.17 are vulnerable to remote denial-...
OpenVPN versions before 2.4.3 and before 2.3.17 are vulnerable to remote denial-of-service due to memory exhaustion caused by memory leaks and double-free issue in extract_x509_extension().
Scope: local
bookworm: resolved (fixed in 2.4.3-1)
bullseye: resolved (fixed in 2.4.3-1)
forky: resolved (fixed in 2.4.3-1)
sid: resolved (fixed in 2.4.3-1)
trixie: resolved (fixed in 2.4.3-1)
No detection rules found.
No public exploits indexed.
HackerOne
4 severe remote + several minor OpenVPN vulnerabilities
hackerone·2019-10-14·CVSS 7.5
CVE-2017-7521 [HIGH] 4 severe remote + several minor OpenVPN vulnerabilities
4 severe remote + several minor OpenVPN vulnerabilities
CVE-2017-7521 Remote server crashes/double-free/memory leaks in certificate processing
CVE-2017-7520 Remote (including MITM) client crash, data leak
CVE-2017-7508 Remote server crash (forced assertion failure)
CVE-2017-7522 Crash mbed TLS/PolarSSL-based server
(no cve) Remote/mitm Null-pointer dereference in establish_http_proxy_passthru()
(no cve) Stack buffer overflow if long –tls-cipher is given
(no cve) Remote (including MITM) client stack buffer corruption
https://community.openvpn.net/openvpn/wiki/VulnerabilitiesFixedInOpenVPN243
https://guidovranken.wordpress.com/2017/06/21/the-openvpn-post-audit-bug-bonanza/
Bugzilla
CVE-2017-7508 CVE-2017-7520 CVE-2017-7521 CVE-2017-7522 openvpn: Multiple security issues fixed in OpenVPN 2.4.3 and 2.3.17
bugzilla·2017-06-21·CVSS 7.5
CVE-2017-7508 [HIGH] CVE-2017-7508 CVE-2017-7520 CVE-2017-7521 CVE-2017-7522 openvpn: Multiple security issues fixed in OpenVPN 2.4.3 and 2.3.17
CVE-2017-7508 CVE-2017-7520 CVE-2017-7521 CVE-2017-7522 openvpn: Multiple security issues fixed in OpenVPN 2.4.3 and 2.3.17
Multiple security issues were fixed in OpenVPN 2.4.3 and 2.3.17, specifically:
CVE-2017-7508: Remotely-triggerable ASSERT() on malformed IPv6 packet
https://github.com/OpenVPN/openvpn/commit/c3f47077a7
CVE-2017-7520: Pre-authentication remote crash/information disclosure for clients
https://github.com/OpenVPN/openvpn/commit/7718c8984f
CVE-2017-7521: Issues in extract_x509_extension() leading to server memory drain/crash/double-free
https://github.com/OpenVPN/openvpn/commit/cb4e35ece4
https://github.com/OpenVPN/openvpn/commit/2d032c7fcd
CVE-2017-7522: Post-authentication remote DoS when using the --x509-track option
https://github.com/OpenVPN/openvpn/commit/42
Bugzilla
CVE-2017-7508 CVE-2017-7520 CVE-2017-7521 CVE-2017-7522 openvpn: Multiple security issues fixed in OpenVPN 2.4.3 and 2.3.17 [epel-all]
bugzilla·2017-06-21·CVSS 7.5
CVE-2017-7508 [HIGH] CVE-2017-7508 CVE-2017-7520 CVE-2017-7521 CVE-2017-7522 openvpn: Multiple security issues fixed in OpenVPN 2.4.3 and 2.3.17 [epel-all]
CVE-2017-7508 CVE-2017-7520 CVE-2017-7521 CVE-2017-7522 openvpn: Multiple security issues fixed in OpenVPN 2.4.3 and 2.3.17 [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
Bugzilla
CVE-2017-7508 CVE-2017-7520 CVE-2017-7521 CVE-2017-7522 openvpn: Multiple security issues fixed in OpenVPN 2.4.3 and 2.3.17 [fedora-all]
bugzilla·2017-06-21·CVSS 7.5
CVE-2017-7508 [HIGH] CVE-2017-7508 CVE-2017-7520 CVE-2017-7521 CVE-2017-7522 openvpn: Multiple security issues fixed in OpenVPN 2.4.3 and 2.3.17 [fedora-all]
CVE-2017-7508 CVE-2017-7520 CVE-2017-7521 CVE-2017-7522 openvpn: Multiple security issues fixed in OpenVPN 2.4.3 and 2.3.17 [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 mes
http://www.debian.org/security/2017/dsa-3900http://www.securityfocus.com/bid/99230http://www.securitytracker.com/id/1038768https://community.openvpn.net/openvpn/wiki/VulnerabilitiesFixedInOpenVPN243http://www.debian.org/security/2017/dsa-3900http://www.securityfocus.com/bid/99230http://www.securitytracker.com/id/1038768https://community.openvpn.net/openvpn/wiki/VulnerabilitiesFixedInOpenVPN243
2017-06-27
Published