Debian Security Bug TrackerDEBIANCVE:CVE-2016-4979CVE-2016-4979
7.5 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
5 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:N/AC:L/Au:N/C:N/I:P/A:N
0.002 Low
EPSS
Percentile
58.7%
The Apache HTTP Server 2.4.18 through 2.4.20, when mod_http2 and mod_ssl are enabled, does not properly recognize the “SSLVerifyClient require” directive for HTTP/2 request authorization, which allows remote attackers to bypass intended access restrictions by leveraging the ability to send multiple requests over a single connection and aborting a renegotiation.
| OS | Version | Architecture | Package | Version | Filename |
|---|---|---|---|---|---|
| Debian | 12 | all | apache2 | < 2.4.23-1 | apache2_2.4.23-1_all.deb |
| Debian | 11 | all | apache2 | < 2.4.23-1 | apache2_2.4.23-1_all.deb |
| Debian | 10 | all | apache2 | < 2.4.23-1 | apache2_2.4.23-1_all.deb |
| Debian | 999 | all | apache2 | < 2.4.23-1 | apache2_2.4.23-1_all.deb |
| Debian | 13 | all | apache2 | < 2.4.23-1 | apache2_2.4.23-1_all.deb |
Related
7.5 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
5 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:N/AC:L/Au:N/C:N/I:P/A:N
0.002 Low
EPSS
Percentile
58.7%