CVE-2017-7522: openvpn technologies, inc openvpn Improper Input Validation
CVSS: 6.5v3.0MediumModified
AliasesUBUNTU-CVE-2017-7522DEBIAN-CVE-2017-7522
Published 27-06-2017Last modified 05-08-2024
Vulnerability summary
CVE-2017-7522 is a medium (CVSS 6.5) Improper Input Validation vulnerability in openvpn technologies, inc openvpn. EPSS estimates a 5.54% chance of exploitation in the next 30 days, higher than 92.7% of scored vulnerabilities.
CVSS score
6.5/10
010
Medium · v3.0 (NVD)EPSS score
5.54%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Advisory lineage
Upstream 0 · Downstream 1 · Related 1Timeline
- 27-06-2017PublishedVulnerability first disclosed.
- 05-08-2024Last modifiedVulnerability information updated.
Description
OpenVPN versions before 2.4.3 and before 2.3.17 are vulnerable to denial-of-service by authenticated remote attacker via sending a certificate with an embedded NULL character.
CVSS metrics
4 scores · 3 sources · 2 versionsMedium 6.5Preferred score · NVD (NIST)
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HSourcesAll 3 agree
- OSV · UbuntuEcosystem advisory · calculated6.5MediumCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated6.5MediumCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Medium 4.0Preferred score · NVD (NIST)
AV:N/AC:L/Au:S/C:N/I:N/A:PSourcesSingle source
EPSS trend
Probability
5.54%
Chance of exploitation in the next 30 days
Percentile
93%
Versus all other CVEs
30-day change
0.00 pp
From 5.54% on 20-09-2026
20-09-202620-10-2026
EPSS score5.54%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root cause- CWE-20Improper Input ValidationThe product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.
- CWE-476NULL Pointer DereferenceThe product dereferences a pointer that it expects to be valid but is NULL.
Affected systems
Debian1 product
- openvpn< 2.4.3-1
Openvpn1 product
- openvpnEOL≤ 2.3.16 | 2.4.0 | 2.4.0:alpha2 | 2.4.0:beta1 | 2.4.0:beta2 | 2.4.0:rc1 | 2.4.0:rc2 | 2.4.1 | 2.4.2
Openvpn technologies, inc1 product
- openvpn< 2.4.3 | < 2.3.17
Ubuntu1 product
- openvpn< 2.3.2-7ubuntu3.1 | < 2.3.10-1ubuntu2
4 vendors · 4 products
References
7 links- community.openvpn.net/openvpn/wiki/VulnerabilitiesFixedInOpenVPN243X Refsource CONFIRMVendor AdvisoryREPORT
